In this comprehensive guide, we compare Chatling and Vertex AI across various parameters including features, pricing, performance, and customer support to help you make the best decision for your business needs.
Overview
When choosing between Chatling and Vertex AI, understanding their unique strengths and architectural differences is crucial for making an informed decision. Both platforms serve the RAG (Retrieval-Augmented Generation) space but cater to different use cases and organizational needs.
Quick Decision Guide
Choose Chatling if: you value broadest ai model selection (32 models) among no-code platforms - includes gpt-5, claude 4.5, gemini 2.5 with per-block flexibility
Choose Vertex AI if: you value industry-leading 2m token context window with gemini models
About Chatling
Chatling is no-code ai chatbot platform with 32-model llm selection. No-code AI chatbot platform with 32-model LLM selection and SMB-focused pricing starting at $25/month. Developed by Envision Labs Inc. (Ontario, Canada), Chatling balances visual builder simplicity with REST API v2 access and native WhatsApp integration. 4.8/5 G2 rating (53-63 reviews). Critical gaps: NO SOC 2/HIPAA certifications, NO native human handoff, NO official SDKs, NO source citations. Founded in Year not disclosed, headquartered in Ontario, Canada, the platform has established itself as a reliable solution in the RAG space.
Overall Rating
85/100
Starting Price
$25/mo
About Vertex AI
Vertex AI is google's unified ml platform with gemini models and automl. Vertex AI is Google Cloud's comprehensive machine learning platform that unifies data engineering, data science, and ML engineering workflows. It offers state-of-the-art Gemini models with industry-leading context windows up to 2 million tokens, AutoML capabilities, and enterprise-grade infrastructure for building, deploying, and scaling AI applications. Founded in 2008, headquartered in Mountain View, CA, the platform has established itself as a reliable solution in the RAG space.
Overall Rating
88/100
Starting Price
Custom
Key Differences at a Glance
In terms of user ratings, both platforms score similarly in overall satisfaction. From a cost perspective, Vertex AI offers more competitive entry pricing. The platforms also differ in their primary focus: Chatbot Platform versus AI Chatbot. These differences make each platform better suited for specific use cases and organizational requirements.
⚠️ What This Comparison Covers
We'll analyze features, pricing, performance benchmarks, security compliance, integration capabilities, and real-world use cases to help you determine which platform best fits your organization's needs. All data is independently verified from official documentation and third-party review platforms.
Detailed Feature Comparison
Chatling
Vertex AI
CustomGPTRECOMMENDED
Data Ingestion & Knowledge Sources
File Formats: PDF, DOCX, plain text ONLY
CRITICAL LIMITATION: NO CSV, Excel, or structured data format support
Website Crawler: Up to 1,000 pages per domain with automatic content extraction
Sitemap Ingestion: Required for sites larger than 1,000 pages
Help Desk Integration: Zendesk and Zoho for importing help articles
Manual Upload: Files, text snippets, FAQs via dashboard interface
NO Cloud Storage: Google Drive, Dropbox, Notion, OneDrive require manual downloads before upload - significant workflow friction
NO YouTube Transcripts: Video content ingestion not supported
Automatic Syncing: Daily, weekly, or monthly schedules on paid plans - NO real-time continuous sync
API Resync: /resync endpoint for programmatic knowledge base updates
Pulls in both structured and unstructured data straight from Google Cloud Storage, handling files like PDF, HTML, and CSV (Vertex AI Search Overview).
Taps into Google’s own web-crawling muscle to fold relevant public website content into your index with minimal fuss (Towards AI Vertex AI Search).
Keeps everything current with continuous ingestion and auto-indexing, so your knowledge base never falls out of date.
Lets you ingest more than 1,400 file formats—PDF, DOCX, TXT, Markdown, HTML, and many more—via simple drag-and-drop or API.
Crawls entire sites through sitemaps and URLs, automatically indexing public help-desk articles, FAQs, and docs.
Turns multimedia into text on the fly: YouTube videos, podcasts, and other media are auto-transcribed with built-in OCR and speech-to-text.
View Transcription Guide
Connects to Google Drive, SharePoint, Notion, Confluence, HubSpot, and more through API connectors or Zapier.
See Zapier Connectors
Supports both manual uploads and auto-sync retraining, so your knowledge base always stays up to date.
Integrations & Channels
WhatsApp Business API: Native robust integration with full chatbot functionality, media sharing, automated responses
Website Embedding: Floating chat bubble (bottom-left/right), inline iframe, full-page deployment with custom domain support
Zapier Integration: 7,000+ apps with triggers (new contacts/conversations) and actions (send messages)
HTTP Request Actions: Custom API calls within visual builder for order lookups, CRM updates, external automations
CRITICAL GAPS: NO native Slack, Microsoft Teams, or Telegram integrations - significant B2B messaging gap
NO Mobile SDKs: App integration requires webview embedding
Custom Domains: Branded chatbot URLs available
Domain Whitelisting: Embedding control for security
Ships solid REST APIs and client libraries for weaving Vertex AI into web apps, mobile apps, or enterprise portals (Google Cloud Vertex AI API Docs).
Plays nicely with other Google Cloud staples—BigQuery, Dataflow, and more—and even supports low-code connectors via Logic Apps and PowerApps (Google Cloud Connectors).
Lets you deploy conversational agents wherever you need them, whether that’s a bespoke front-end or an embedded widget.
Embeds easily—a lightweight script or iframe drops the chat widget into any website or mobile app.
Offers ready-made hooks for Slack, Zendesk, Confluence, YouTube, Sharepoint, 100+ more.
Explore API Integrations
Connects with 5,000+ apps via Zapier and webhooks to automate your workflows.
Supports secure deployments with domain allowlisting and a ChatGPT Plugin for private use cases.
Hosted CustomGPT.ai offers hosted MCP Server with support for Claude Web, Claude Desktop, Cursor, ChatGPT, Windsurf, Trae, etc.
Read more here.
AI Intents: Train on example phrases for intent recognition without exact keyword matching
Visual Flow Builder: No-code interface with drag-and-drop conversation design
HTTP Request Blocks: Real-time API integrations within chatbot flows (e.g., order confirmations, CRM lookups)
Lead Capture: Built-in system variables for name, email, phone collection with embedded forms
Multi-language Detection: 85+ languages with automatic browser-based preference detection
Satisfaction Surveys: Helpful/unhelpful tracking at conversation end with analytics integration
CRITICAL LIMITATION: NO native human handoff - fallback collects contact info for follow-up vs live agent transfer
Third-Party Escalation: Requires Zapier integration to Zendesk, Freshdesk, or similar platforms - adds complexity and latency
AI Agents (Beta): Task-oriented assistants with intent detection, decision-making, API execution beyond simple chatbots
Vertex AI Agent Engine: Build autonomous agents with short-term and long-term memory for managing sessions and recalling past conversations and preferences
Agent Builder (April 2024): Visual drag-and-drop interface to create AI agents without code, with advanced integrations to LlamaIndex, LangChain, and RAG capabilities combining LLM-generated responses with real-time data retrieval
Multi-turn conversation context: Agent Engine Sessions store individual user-agent interactions as definitive sources for conversation context, enabling coherent multi-turn interactions
Memory Bank: Stores and retrieves information from sessions to personalize agent interactions and maintain context across conversations
Agent orchestration: Agents can maintain context across systems, discover each other's capabilities dynamically, and negotiate interaction formats
Human handoff capabilities: Generate interaction summaries, citations, and other data to facilitate handoffs between AI apps and human agents with full conversation history
Observability tools: Google Cloud Trace, Cloud Monitoring, and Cloud Logging provide comprehensive understanding of agent behavior and performance
Action-based agents: Take actions based on conversations and interact with back-end transactional systems in an automated manner
Data source tuning: Tune chats with various data sources including conversation histories to enable smooth transitions and continuous improvement
LIMITATION: Technical expertise required: Agent Builder introduced visual interface in 2024, but deeper customization and orchestration still require GCP/developer skills
LIMITATION: No native lead capture: Unlike specialized chatbot platforms, Vertex AI focuses on enterprise conversational AI rather than marketing automation features
Custom AI Agents: Build autonomous agents powered by GPT-4 and Claude that can perform tasks independently and make real-time decisions based on business knowledge
Decision-Support Capabilities: AI agents analyze proprietary data to provide insights, recommendations, and actionable responses specific to your business domain
Multi-Agent Systems: Deploy multiple specialized AI agents that can collaborate and optimize workflows in areas like customer support, sales, and internal knowledge management
Memory & Context Management: Agents maintain conversation history and persistent context for coherent multi-turn interactions
View Agent Documentation
Tool Integration: Agents can trigger actions, integrate with external APIs via webhooks, and connect to 5,000+ apps through Zapier for automated workflows
Hyper-Accurate Responses: Leverages advanced RAG technology and retrieval mechanisms to deliver context-aware, citation-backed responses grounded in your knowledge base
Continuous Learning: Agents improve over time through automatic re-indexing of knowledge sources and integration of new data without manual retraining
Free Tier Access: 8 models available without payment (GPT-4.1, GPT-4o, GPT-4o Mini, Claude 4 Sonnet, etc.)
Hybrid Deployment Capability: Per-block model selection enables using GPT-4o for complex queries, GPT-4o Mini for simple FAQs within same chatbot
Cost Optimization: Model flexibility allows balancing quality vs credit consumption per conversation stage
Temperature & Token Control: Exposed at both global and per-block levels for fine-tuned model behavior
Competitive Advantage: Exceeds CustomGPT, Drift, Yellow.ai, Lindy.ai in sheer model variety and flexibility
Manual Selection Required: NO automatic routing based on query complexity - users must configure model per use case
Credit System Integration: Different models consume different credit amounts - documented per model for budgeting
N/A
N/A
Whats App Native Integration ( Differentiator)
WhatsApp Business API: Native robust integration vs third-party workarounds required by many competitors
Full Chatbot Functionality: All chatbot features work on WhatsApp including AI responses, knowledge base queries, lead capture
Media Sharing: Images, documents, voice messages supported in WhatsApp conversations
Automated Responses: 24/7 WhatsApp availability with AI-powered replies
Consumer-Facing Strength: Strong for e-commerce, SMBs, global markets where WhatsApp dominates customer communication
Competitive Gap: Progress, CustomGPT, many RAG platforms lack native WhatsApp - Chatling advantage for consumer use cases
B2B Messaging Gap: WhatsApp strength doesn't offset missing Slack/Teams integrations for enterprise internal use
N/A
N/A
Multi- Lingual Support
85+ Languages Supported: Broad coverage for global deployments
Automatic Browser-Based Detection: Chatbot detects user language preference from browser settings and responds accordingly
NO Manual Configuration Required: Language switching happens automatically without admin setup
Interface Language: Configurable for chatbot UI elements (buttons, prompts, system messages)
Multi-Language Model Support: All 32 AI models support multilingual conversations
Knowledge Base Processing: Supports multi-language content ingestion and retrieval
Global Customer Base: Valuable for international businesses serving diverse markets without language barriers
N/A
N/A
R A G-as-a- Service Assessment
Platform Type: NO-CODE CHATBOT PLATFORM with RAG capabilities - NOT pure RAG-as-a-Service like CustomGPT or Progress
RAG Implementation: Knowledge base grounding embedded within visual chatbot builder vs API-first RAG backend
Developer Access: REST API v2 provides programmatic knowledge base queries (/ai/kb/chat endpoint) but NO official SDKs
Transparency Limitation: NO source citations displayed to end users - responses don't show which documents informed answers
NO Confidence Scoring: Hallucination detection mechanisms not documented - only temperature control
Target Market: SMBs and non-technical teams prioritizing rapid chatbot deployment vs developers needing deep RAG customization
Comparison Validity: Architectural comparison to CustomGPT.ai is partially valid - both offer RAG but Chatling emphasizes no-code chatbot vs developer-first RAG API
Use Case Fit: Organizations prioritizing customer-facing chatbots with simple knowledge retrieval over complex RAG pipelines, embeddings control, or advanced retrieval strategies
Platform Type: TRUE ENTERPRISE RAG-AS-A-SERVICE PLATFORM - fully managed orchestration service for production-ready RAG implementations with developer-first APIs
Core Architecture: Vertex AI RAG Engine (GA 2024) streamlines complex process of retrieving relevant information and feeding it to LLMs, with managed infrastructure handling data retrieval and LLM integration
API-First Design: Comprehensive easy-to-use API enabling rapid prototyping with VPC-SC security controls and CMEK support (data residency and AXT not supported)
Managed Orchestration: Developers focus on building applications rather than managing infrastructure - handles complexities of vector search, chunking, embedding, and retrieval automatically
Customization Depth: Various parsing, chunking, annotation, embedding, vector storage options with open-source model integration for specialized domain requirements
Developer Experience: "Sweet spot" for developers using Vertex AI to implement RAG-based LLMs - balances ease of use of Vertex AI Search with power of custom RAG pipeline
Target Market: Enterprise developers already using GCP infrastructure wanting managed RAG without building from scratch, organizations needing PaLM 2/Gemini models with Google's search capabilities
RAG Technology Leadership: Hybrid search with advanced reranking, factual-consistency scoring, Google web-crawling infrastructure for public content ingestion, sub-millisecond responses globally
Deployment Flexibility: Public cloud, VPC, or on-premise deployments with multi-region scalability, seamless GCP integration (BigQuery, Dataflow, Cloud Functions), and unified billing
Enterprise Readiness: SOC 2/ISO/HIPAA/GDPR compliance, customer-managed encryption keys, Private Link, detailed audit logs, Google Cloud Operations Suite monitoring
Use Case Fit: Ideal for personalized investment advice and risk assessment, accelerated drug discovery and personalized treatment plans, enhanced due diligence and contract review, GCP-native organizations wanting unified AI infrastructure
Competitive Positioning: Positioned between no-code platforms (WonderChat, Chatbase) and custom implementations (LangChain) - offers managed RAG with enterprise-grade capabilities for GCP ecosystem
LIMITATION: GCP lock-in: Strongest value for GCP customers - less compelling for AWS/Azure-native organizations vs platform-agnostic alternatives like CustomGPT or Cohere
LIMITATION: Google models only: PaLM 2/Gemini family exclusively - no native support for Claude, GPT-4, or open-source models compared to multi-model platforms
Core Architecture: Serverless RAG infrastructure with automatic embedding generation, vector search optimization, and LLM orchestration fully managed behind API endpoints
API-First Design: Comprehensive REST API with well-documented endpoints for creating agents, managing projects, ingesting data (1,400+ formats), and querying chat
API Documentation
Developer Experience: Open-source Python SDK (customgpt-client), Postman collections, OpenAI API endpoint compatibility, and extensive cookbooks for rapid integration
No-Code Alternative: Wizard-style web dashboard enables non-developers to upload content, brand widgets, and deploy chatbots without touching code
Hybrid Target Market: Serves both developer teams wanting robust APIs AND business users seeking no-code RAG deployment - unique positioning vs pure API platforms (Cohere) or pure no-code tools (Jotform)
RAG Technology Leadership: Industry-leading answer accuracy (median 5/5 benchmarked), 1,400+ file format support with auto-transcription, proprietary anti-hallucination mechanisms, and citation-backed responses
Benchmark Details
Deployment Flexibility: Cloud-hosted SaaS with auto-scaling, API integrations, embedded chat widgets, ChatGPT Plugin support, and hosted MCP Server for Claude/Cursor/ChatGPT
Enterprise Readiness: SOC 2 Type II + GDPR compliance, full white-labeling, domain allowlisting, RBAC with 2FA/SSO, and flat-rate pricing without per-query charges
Use Case Fit: Ideal for organizations needing both rapid no-code deployment AND robust API capabilities, teams handling diverse content types (1,400+ formats, multimedia transcription), and businesses requiring production-ready RAG without building ML infrastructure from scratch
Competitive Positioning: Bridges the gap between developer-first platforms (Cohere, Deepset) requiring heavy coding and no-code chatbot builders (Jotform, Kommunicate) lacking API depth - offers best of both worlds
Competitive Positioning
Market Position: SMB-focused no-code chatbot platform with strongest appeal to non-technical teams and budget-conscious startups
32-Model Differentiator: Broadest LLM selection among no-code platforms - exceeds competitors in model flexibility
Free Tier Generosity: 100 AI credits, 2 chatbots, 8 models without credit card - strongest trial experience for evaluation
WhatsApp Strength: Native integration vs third-party workarounds - competitive advantage for consumer-facing businesses
G2 Validation: 4.8/5 rating from 53-63 reviews with reliability praised ("chatbots have never gone down")
vs. CustomGPT: Chatling offers no-code simplicity + WhatsApp vs CustomGPT developer-first RAG with deeper API/SDK access
vs. Progress: Chatling $25/month + visual builder vs Progress $700/month + REMi quality monitoring + enterprise compliance
vs. Drift: Chatling customer support automation vs Drift B2B sales engagement - different use case focus
vs. Lindy.ai: Chatling has REST API v2 vs Lindy NO public API - developer accessibility advantage
Enterprise Gaps: NO SOC 2/HIPAA/ISO 27001, NO SSO, NO human handoff - disqualifies for regulated industries and large enterprises
B2B Messaging Gaps: NO native Slack/Teams/Telegram - limits enterprise internal use cases vs omnichannel competitors
Developer Limitations: NO official SDKs, NO source citations, NO confidence scoring - gaps vs developer-focused RAG platforms
Market Presence: Absent from Product Hunt, AppSumo vs competitors - limited growth marketing exposure
Market position: Enterprise-grade Google Cloud AI platform combining Vertex AI Search with Conversation for production-ready RAG, deeply integrated with GCP ecosystem
Target customers: Organizations already invested in Google Cloud infrastructure, enterprises requiring PaLM 2/Gemini models with Google's search capabilities, and companies needing global scalability with multi-region deployment and GCP service integration
Key competitors: Azure AI Search, AWS Bedrock, OpenAI Enterprise, Coveo, and custom RAG implementations
Competitive advantages: Native Google PaLM 2/Gemini models with external LLM support, Google's web-crawling infrastructure for public content ingestion, seamless GCP integration (BigQuery, Dataflow, Cloud Functions), hybrid search with advanced reranking, SOC/ISO/HIPAA/GDPR compliance with customer-managed keys, global infrastructure for millisecond responses worldwide, and Google Cloud Operations Suite for comprehensive monitoring
Pricing advantage: Pay-as-you-go with free tier for development; competitive for GCP customers leveraging existing enterprise agreements and volume discounts; autoscaling prevents overprovisioning; best value for organizations with GCP infrastructure wanting unified billing and managed services
Use case fit: Best for organizations already using GCP infrastructure (BigQuery, Cloud Functions), enterprises needing Google's proprietary models (PaLM 2, Gemini) with web-crawling capabilities, and companies requiring global scalability with multi-region deployment and tight integration with GCP analytics and data pipelines
Market position: Leading all-in-one RAG platform balancing enterprise-grade accuracy with developer-friendly APIs and no-code usability for rapid deployment
Target customers: Mid-market to enterprise organizations needing production-ready AI assistants, development teams wanting robust APIs without building RAG infrastructure, and businesses requiring 1,400+ file format support with auto-transcription (YouTube, podcasts)
Key competitors: OpenAI Assistants API, Botsonic, Chatbase.co, Azure AI, and custom RAG implementations using LangChain
Competitive advantages: Industry-leading answer accuracy (median 5/5 benchmarked), 1,400+ file format support with auto-transcription, SOC 2 Type II + GDPR compliance, full white-labeling included, OpenAI API endpoint compatibility, hosted MCP Server support (Claude, Cursor, ChatGPT), generous data limits (60M words Standard, 300M Premium), and flat monthly pricing without per-query charges
Pricing advantage: Transparent flat-rate pricing at $99/month (Standard) and $449/month (Premium) with generous included limits; no hidden costs for API access, branding removal, or basic features; best value for teams needing both no-code dashboard and developer APIs in one platform
Use case fit: Ideal for businesses needing both rapid no-code deployment and robust API capabilities, organizations handling diverse content types (1,400+ formats, multimedia transcription), teams requiring white-label chatbots with source citations for customer-facing or internal knowledge projects, and companies wanting all-in-one RAG without managing ML infrastructure
Deployment & Infrastructure
Cloud-Only SaaS: NO on-premise or hybrid deployment options - cloud-only hosted on DigitalOcean
Data Center: Amsterdam (DigitalOcean) for GDPR compliance with EU data residency
Website Embedding: Three modes - floating chat bubble (customizable position), inline iframe for page sections, full-page deployment
Custom Domain Support: Branded chatbot URLs available for white-labeled deployments
Domain Whitelisting: Security control limiting widget embedding to authorized domains
Mobile Deployment: NO native SDKs - app integration requires webview embedding
NO Multi-Region: Single data center (Amsterdam) - no US, Asia-Pacific, or other regional options documented
NO On-Premise: Cannot deploy on private infrastructure or air-gapped environments
N/A
N/A
Customer Feedback & Case Studies
G2 Rating: 4.8/5 from 53-63 reviews with strong reliability scores
Trustpilot Rating: 4.3/5 from 8 reviews
Support Quality (G2): 9.2/10 despite email-only channel and response time concerns
Setup Time Praise: "5-minute setup" consistently highlighted by users as genuine rapid deployment
Reliability Testimonial: "Chatbots have never gone down" - uptime performance praised
Support Deflection: One user reported 45% of support questions resolved, reducing email inquiries from 1,500+ monthly
Large-Scale Deployment: User uploaded 4,000+ website URLs with "reliable answers in real time"
Fine-Tuning from Traffic: "Game changer" - ability to improve from live conversation data
Recurring Criticism: Single flow architecture unwieldy for complex bots, NO import/export flows, NO screen reader accessibility, email support can be slow
NO Named Enterprise Customers: Public case studies limited to G2/Trustpilot testimonials vs named Fortune 500 deployments
N/A
N/A
A I Models
Free Tier (8 Models): GPT-4.1, GPT-4o, GPT-4o Mini, GPT-4, Claude 4 Sonnet, Claude 3.5 Haiku without payment
Paid Tiers (32 Total): GPT-5, GPT-5 Mini, GPT-5 Nano, GPT-4.5, o4 Mini, o3 Mini, Claude 4.5 Sonnet, Claude 4.5 Haiku, Claude 4 Opus, Claude 3.7 Sonnet, Gemini 2.5 Flash, Gemini 2.5 Pro, Gemini 2.0 Flash - broadest selection among no-code platforms
Model Flexibility: Configure globally per chatbot OR per individual AI response block for hybrid deployments optimizing cost-quality balance
Temperature & Max Tokens: Exposed at both global and per-block levels for fine-tuned control over creativity and verbosity
Manual Selection Only: No query complexity-based automatic model routing - users manually configure model per use case
Credit Consumption: 1 credit per AI response on GPT-4o, consumption varies by model with monthly reset (no carryover)
Competitive Advantage: 32-model roster exceeds most no-code platforms (Botsonic, Chatbase, SiteGPT) in LLM flexibility
Google proprietary models: PaLM 2 (Pathways Language Model) and Gemini 2.0/2.5 family (Pro, Flash variants) optimized for enterprise workloads
Gemini 2.5 Pro: $1.25-$2.50 per million input tokens, $10-$15 per million output tokens for advanced reasoning and multimodal understanding
Gemini 2.5 Flash: $0.30 per million input tokens, $2.50 per million output tokens for cost-effective high-speed inference
Gemini 2.0 Flash: $0.15 per million input tokens, $0.60 per million output tokens for ultra-low-cost deployment
External LLM support: Can call external LLMs via API if preferring non-Google models for specific use cases
Model selection flexibility: Choose models based on balance of cost, speed, and quality requirements per use case
Prompt template customization: Configure tone, format, and citation rules through prompt engineering
Temperature and token controls: Adjust generation parameters (temperature, max tokens) for domain-specific response characteristics
Primary models: GPT-4, GPT-3.5 Turbo from OpenAI, and Anthropic's Claude for enterprise needs
Automatic model selection: Balances cost and performance by automatically selecting the appropriate model for each request
Model Selection Details
Proprietary optimizations: Custom prompt engineering and retrieval enhancements for high-quality, citation-backed answers
Managed infrastructure: All model management handled behind the scenes - no API keys or fine-tuning required from users
Anti-hallucination technology: Advanced mechanisms ensure chatbot only answers based on provided content, improving trust and factual accuracy
R A G Capabilities
Knowledge Base Training: Upload documents (PDF, DOCX, TXT, CSV) and website URLs to train chatbot on custom content
Retrieval-Augmented Responses: Grounds answers in uploaded knowledge base for factual accuracy and reduced hallucinations compared to pure LLM responses
Auto-Retraining: Daily, weekly, or monthly schedules on paid plans - NO real-time continuous sync with cloud storage
Simple RAG Workflow: No advanced features like semantic chunking controls, confidence scoring, or source citations - basic upload-and-query model
Manual Updates: Knowledge base updates require manual re-upload or retraining via dashboard or API /resync endpoint
NO Source Citations: Responses don't show which specific documents or URLs informed each answer - reduces transparency vs competitors (CustomGPT, Progress)
NO Confidence Scoring: No hallucination detection mechanisms documented - only indirect temperature control
Best for Simple Bots: Works well for small to medium-sized knowledge bases (500K-90M characters) - not designed for massive enterprise deployments
Performance Claims: 45% support question resolution, 4,000+ URLs processed with "reliable answers in real time" per user testimonials
Hybrid search: Combines semantic vector search with keyword (BM25) matching for strong retrieval accuracy across query types
Advanced reranking: Multi-stage reranking pipeline cuts hallucinations and ensures factual consistency in generated responses
Google web-crawling: Taps into Google's web-crawling infrastructure to ingest relevant public website content into indexes automatically
Continuous ingestion: Keeps knowledge base current with automatic indexing and auto-refresh preventing stale data
Fine-grained indexing control: Set chunk sizes, metadata tags, and retrieval parameters to shape semantic search behavior
Semantic/lexical weighting: Adjust balance between semantic and keyword search per query type for optimal retrieval
Structured/unstructured data: Handles both structured data (BigQuery, Cloud SQL) and unstructured documents (PDF, HTML, CSV) from Google Cloud Storage
Factual consistency scoring: Hybrid search + reranking returns factual-consistency score with every answer for reliability assessment
Custom cognitive skills: Slot in custom processing or open-source models for specialized domain requirements
Core architecture: GPT-4 combined with Retrieval-Augmented Generation (RAG) technology, outperforming OpenAI in RAG benchmarks
RAG Performance
Anti-hallucination technology: Advanced mechanisms reduce hallucinations and ensure responses are grounded in provided content
Benchmark Details
Automatic citations: Each response includes clickable citations pointing to original source documents for transparency and verification
Optimized pipeline: Efficient vector search, smart chunking, and caching for sub-second reply times
Scalability: Maintains speed and accuracy for massive knowledge bases with tens of millions of words
Context-aware conversations: Multi-turn conversations with persistent history and comprehensive conversation management
Source verification: Always cites sources so users can verify facts on the spot
Use Cases
Website Chatbots: Quick embedding on websites for customer support and lead generation with simple JavaScript widget
WhatsApp Business: Native WhatsApp integration for conversational commerce and customer engagement on mobile-first platforms
Customer Support Automation: FAQ automation and basic support ticket routing reducing email inquiries by 45% (user testimonial: 1,500+ monthly inquiries)
Lead Generation: Built-in lead capture with system variables (name, email, phone) and qualification flows for sales pipeline building
Multi-Language Support: Automatic browser-based language detection across 85+ languages for global SMB audiences
Zapier Workflows: Connect to 7,000+ apps through Zapier for sales/marketing automation without coding
HTTP Request Actions: Custom API calls within visual builder for order lookups, CRM updates, external automations
E-commerce Support: Product information, order status, customer inquiry automation for online stores
SMB-Focused: Designed for small to mid-size businesses with straightforward chatbot needs and limited technical resources (5-minute setup time)
GCP-native organizations: Perfect for companies already using BigQuery, Cloud Functions, Dataflow wanting unified AI infrastructure
Global enterprise deployments: Multi-region deployment with Google's global infrastructure for millisecond responses worldwide
Public content ingestion: Leverage Google's web-crawling muscle to automatically fold relevant public web content into knowledge bases
Multimodal understanding: Gemini models process and reason over text, images, videos, and code for rich content analysis
Google Workspace integration: Seamless integration with Gmail, Docs, Sheets for content-heavy workflows within Workspace ecosystem
BigQuery analytics integration: Tight coupling with BigQuery for analytics on conversation data, user behavior, and system performance
Enterprise conversational AI: Build customer service bots, internal knowledge assistants, and autonomous agents grounded in company data
Regulated industries: Healthcare, finance, government with SOC/ISO/HIPAA/GDPR compliance and customer-managed encryption keys
Customer support automation: AI assistants handling common queries, reducing support ticket volume, providing 24/7 instant responses with source citations
Internal knowledge management: Employee self-service for HR policies, technical documentation, onboarding materials, company procedures across 1,400+ file formats
Sales enablement: Product information chatbots, lead qualification, customer education with white-labeled widgets on websites and apps
Documentation assistance: Technical docs, help centers, FAQs with automatic website crawling and sitemap indexing
Educational platforms: Course materials, research assistance, student support with multimedia content (YouTube transcriptions, podcasts)
Healthcare information: Patient education, medical knowledge bases (SOC 2 Type II compliant for sensitive data)
Gemini 2.0 Flash: $0.15/M input tokens, $0.60/M output tokens for ultra-low-cost deployment at scale
Imagen pricing: $0.0001 per image for specific endpoints enabling visual content generation
Autoscaling: Scales effortlessly on Google's global backbone with automatic resource adjustment preventing overprovisioning
Enterprise agreements: Volume discounts and committed use discounts for GCP customers with existing enterprise agreements
Unified billing: Single GCP bill for Vertex AI, BigQuery, Cloud Functions, and all Google Cloud services
Standard Plan: $99/month or $89/month annual - 10 custom chatbots, 5,000 items per chatbot, 60 million words per bot, basic helpdesk support, standard security
View Pricing
Premium Plan: $499/month or $449/month annual - 100 custom chatbots, 20,000 items per chatbot, 300 million words per bot, advanced support, enhanced security, additional customization
Enterprise Plan: Custom pricing - Comprehensive AI solutions, highest security and compliance, dedicated account managers, custom SSO, token authentication, priority support with faster SLAs
Enterprise Solutions
7-Day Free Trial: Full access to Standard features without charges - available to all users
Annual billing discount: Save 10% by paying upfront annually ($89/mo Standard, $449/mo Premium)
Flat monthly rates: No per-query charges, no hidden costs for API access or white-labeling (included in all plans)
Managed infrastructure: Auto-scaling cloud infrastructure included - no additional hosting or scaling fees
Support & Documentation
Email-Only Support: support@chatling.ai - NO live chat, phone support, or published SLAs (email support can be slow per reviews)
G2 Support Rating: 9.2/10 quality despite email-only channel and response time concerns
Comprehensive Documentation: docs.chatling.ai with getting started guides, API reference, integration tutorials, flow builder instructions
Video Tutorials: Supplement written documentation for visual learners
Action Tutorial Library: Practical HTTP request examples for common integrations (e.g., "Fetch and Email Order Confirmation")
Trust Center: trust.chatling.ai for security documentation and compliance details
REST API v2: https://api.chatling.ai/v2/ with Bearer token authentication and 300 requests/minute rate limit
MISSING ECOSYSTEM: NO community forum, Discord, Slack workspace, or public status page for peer support
NO Public Roadmap: Feature development transparency limited compared to competitors
Enterprise Support: Requires contacting sales - no dedicated support tiers publicly documented
Google Cloud enterprise support: Multiple support tiers (Basic, Standard, Enhanced, Premium) with SLAs and dedicated technical account managers
24/7 global support: Premium support includes 24/7 phone, email, and chat with 15-minute response time for P1 issues
Comprehensive documentation: Detailed guides at cloud.google.com/vertex-ai/docs covering APIs, SDKs, best practices, and tutorials
Community forums: Google Cloud Community for peer support, knowledge sharing, and best practice discussions
Sample projects and notebooks: Pre-built examples, Jupyter notebooks, and quick-start guides on GitHub for rapid integration
Training and certification: Google Cloud training programs, hands-on labs, and certification paths for Vertex AI and machine learning
Partner ecosystem: Robust ecosystem of Google Cloud partners offering consulting, implementation, and managed services
Regular updates: Continuous R&D investment from Google pouring resources into RAG and generative AI capabilities
Documentation hub: Rich docs, tutorials, cookbooks, FAQs, API references for rapid onboarding
Developer Docs
Email and in-app support: Quick support via email and in-app chat for all users
Premium support: Premium and Enterprise plans include dedicated account managers and faster SLAs
Code samples: Cookbooks, step-by-step guides, and examples for every skill level
API Documentation
Active community: User community plus 5,000+ app integrations through Zapier ecosystem
Regular updates: Platform stays current with ongoing GPT and retrieval improvements automatically
Limitations & Considerations
Single Flow Management: Larger bots get unwieldy because everything lives inside single flow - no folder organization like ManyChat for complex conversation trees
NO Live Chat Support: Doesn't include live chat feature - blended human-AI support approach unavailable without Zapier workarounds
Separate Bots Per Channel: Need to build separate chatbot for website vs WhatsApp - no unified multi-channel bot creation
Limited Advanced Features: Once you need fallback behavior, confidence scoring, or content indexing control, limitations appear
Barebones Analytics: Analytics pretty barebones compared to enterprise platforms with detailed conversation intelligence and custom report builders
Knowledge Base Management Challenges: For e-shop or site with lots of pages, nightmare to sort which pages to add - no Excel import for bulk management
Data Quality Dependency: If data isn't clean, bot might pull irrelevant answers - heavily dependent on training data quality and curation
NO Flow Import/Export: Cannot import or export flows, no option to copy or duplicate full group of blocks for version control
Screen Reader Accessibility: Does not support accessibility for blind users using screen readers - inclusivity limitation cited in reviews
Setup Time Investment: Configuring chatbot tone takes manual effort, assembling strong knowledge base not plug-and-play despite 5-minute claims
Learning Curve: Takes while to learn how to use builder and tools despite drag-and-drop interface and visual design
Integration Gaps: Heavy reliance on Zapier might limit functionality if service experiences downtime - not all third-party platforms supported natively
Interface Overwhelm: Drag-and-drop can be overwhelming for new users unfamiliar with chatbot design principles and flow logic
Best for Small-to-Medium Bots: Works best for small to medium-sized bots rather than massive enterprise-level projects with complex requirements
B2B Messaging Gaps: NO native Slack, Microsoft Teams, or Telegram integrations - limits enterprise internal use cases
NO Official SDKs: Must build own HTTP clients or rely on community implementations - no official JavaScript or Python SDKs
Enterprise Compliance Gaps: NO SOC 2, HIPAA, ISO 27001 certifications disqualifies platform for regulated industries (healthcare, finance, government)
GCP ecosystem dependency: Strongest value for organizations already using Google Cloud - less compelling for AWS/Azure-native companies
No full drag-and-drop chatbot builder: Cloud console manages indexes and search settings, but not a complete no-code GUI like Tidio or WonderChat
Learning curve for non-GCP users: Teams unfamiliar with Google Cloud face steeper learning curve vs platform-agnostic alternatives
Model selection limited to Google: PaLM 2 and Gemini family only - no native Claude, GPT-4, or Llama support compared to multi-model platforms
Requires technical expertise: Deeper customization calls for developer skills - not suitable for non-technical teams without GCP experience
Pricing complexity: Pay-as-you-go model requires careful monitoring to prevent unexpected costs at scale
Overkill for simple use cases: Enterprise RAG capabilities and GCP integration unnecessary for basic FAQ bots or simple customer service
Vendor lock-in considerations: Deep GCP integration creates switching costs if migrating to alternative cloud providers in future
Managed service approach: Less control over underlying RAG pipeline configuration compared to build-your-own solutions like LangChain
Vendor lock-in: Proprietary platform - migration to alternative RAG solutions requires rebuilding knowledge bases
Model selection: Limited to OpenAI (GPT-4, GPT-3.5) and Anthropic (Claude) - no support for other LLM providers (Cohere, AI21, open-source models)
Pricing at scale: Flat-rate pricing may become expensive for very high-volume use cases (millions of queries/month) compared to pay-per-use models
Customization limits: While highly configurable, some advanced RAG techniques (custom reranking, hybrid search strategies) may not be exposed
Language support: Supports 90+ languages but performance may vary for less common languages or specialized domains
Real-time data: Knowledge bases require re-indexing for updates - not ideal for real-time data requirements (stock prices, live inventory)
Enterprise features: Some advanced features (custom SSO, token authentication) only available on Enterprise plan with custom pricing
Additional Considerations
Simplicity as Strength: Platform strongest feature is simplicity designed so anyone regardless of technical background can build powerful GPT-enabled chatbot quickly
No-Code Accessibility: Drag-and-drop interface makes creating AI chatbots accessible to non-technical users with minimal learning curve
Multilingual Versatility: Supports over 85 languages ensuring chatbot can communicate with diverse linguistic backgrounds automatically
Integration Flexibility: Seamless integration with HubSpot, Zendesk, Zoho, Google Sheets, Cal.com, and Zapier for workflow automation
Cost-Effective Free Plan: Unique free plan doesn't cap conversations - if you don't need AI-powered replies, stay free forever making it most cost-effective for SMBs
Latest AI Models: Powered by latest large language models including GPT, Gemini, and Claude ensuring cutting-edge performance
WhatsApp Native Integration: Works seamlessly on websites and WhatsApp providing mobile-first customer engagement capabilities
Proven Reliability: G2 reviews praise "chatbots have never gone down" with 4.8/5 rating from 53-63 reviews demonstrating strong uptime
Support Deflection Success: User reported 45% of support questions resolved reducing email inquiries from 1,500+ monthly for efficiency gains
Security & Privacy: Industry-standard security with data encryption in transit and at rest, GDPR compliant with regular security audits
Training Flexibility: Upload documents, add websites, connect data sources to train AI chatbot automatically on custom content
Trade-Off: Simplicity vs Advanced Features: Exceptional usability and ease comes at cost of advanced features like custom flows, live chat, enterprise compliance
Best Fit: Small to mid-size businesses prioritizing rapid deployment, simplicity, and cost-effectiveness over enterprise-grade features and compliance
Packs hybrid search and reranking that return a factual-consistency score with every answer.
Supports public cloud, VPC, or on-prem deployments if you have strict data-residency rules.
Gets regular updates as Google pours R&D into RAG and generative AI capabilities.
Slashes engineering overhead with an all-in-one RAG platform—no in-house ML team required.
Gets you to value quickly: launch a functional AI assistant in minutes.
Stays current with ongoing GPT and retrieval improvements, so you’re always on the latest tech.
Balances top-tier accuracy with ease of use, perfect for customer-facing or internal knowledge projects.
Core Chatbot Features
AI-Powered Responses: Accurate, round-the-clock customer support trained on business data from URLs, FAQs, knowledge bases, documents, text inputs
No-Code Visual Builder: Intuitive drag-and-drop builder requiring no coding expertise - heart of Chatling 2.0 update and game-changer for non-technical users
Multi-Turn Conversations: Maintains conversation history and context for natural, flowing dialogues rather than treating each query independently
Multi-Language Support: 85+ languages with automatic browser-based language detection - bot responds in user's detected language without manual configuration
24/7 Availability: Operates around the clock ensuring customers receive feedback when needed without human intervention
Lead Capture Forms: Built-in form builder for embedding within conversation flows to collect customer information seamlessly
Analytics & Insights: Tracks customer conversations to identify gaps in support resources with visual metrics, heatmaps, and trend graphs
Customization Options: Tailor every aspect from chat interface to conversational logic matching brand tone and style with color picker, icon uploader, settings toggles
Integration Capabilities: Easily integrates with websites (WordPress, Squarespace, Shopify) and platforms like HubSpot, Zendesk, Zoho, Zapier
Multiple Chatbots: Create multiple chatbots per account (1 on Free, 2 on Pro, 5 on Pro, 35 on Ultimate) for different use cases
Conversation Management: Real-time monitoring, message history viewing, popular question identification for knowledge base optimization
45% Resolution Rate: User testimonial reports 45% of support questions successfully resolved with email reduction from 1,500+ monthly inquiries
After analyzing features, pricing, performance, and user feedback, both Chatling and Vertex AI are capable platforms that serve different market segments and use cases effectively.
When to Choose Chatling
You value broadest ai model selection (32 models) among no-code platforms - includes gpt-5, claude 4.5, gemini 2.5 with per-block flexibility
Generous free tier: 100 AI credits, 2 chatbots, 8 models, 500K characters - meaningful testing capacity without credit card
Unlimited non-AI chats across all tiers reduces usage anxiety and cost unpredictability
Best For: Broadest AI model selection (32 models) among no-code platforms - includes GPT-5, Claude 4.5, Gemini 2.5 with per-block flexibility
When to Choose Vertex AI
You value industry-leading 2m token context window with gemini models
Comprehensive ML platform covering entire AI lifecycle
Deep integration with Google Cloud ecosystem
Best For: Industry-leading 2M token context window with Gemini models
Migration & Switching Considerations
Switching between Chatling and Vertex AI requires careful planning. Consider data export capabilities, API compatibility, and integration complexity. Both platforms offer migration support, but expect 2-4 weeks for complete transition including testing and team training.
Pricing Comparison Summary
Chatling starts at $25/month, while Vertex AI begins at custom pricing. Total cost of ownership should factor in implementation time, training requirements, API usage fees, and ongoing support. Enterprise deployments typically see annual costs ranging from $10,000 to $500,000+ depending on scale and requirements.
Our Recommendation Process
Start with a free trial - Both platforms offer trial periods to test with your actual data
Define success metrics - Response accuracy, latency, user satisfaction, cost per query
Test with real use cases - Don't rely on generic demos; use your production data
Evaluate total cost - Factor in implementation time, training, and ongoing maintenance
Check vendor stability - Review roadmap transparency, update frequency, and support quality
For most organizations, the decision between Chatling and Vertex AI comes down to specific requirements rather than overall superiority. Evaluate both platforms with your actual data during trial periods, focusing on accuracy, latency, ease of integration, and total cost of ownership.
📚 Next Steps
Ready to make your decision? We recommend starting with a hands-on evaluation of both platforms using your specific use case and data.
• Review: Check the detailed feature comparison table above
• Test: Sign up for free trials and test with real queries
• Calculate: Estimate your monthly costs based on expected usage
• Decide: Choose the platform that best aligns with your requirements
Last updated: December 6, 2025 | This comparison is regularly reviewed and updated to reflect the latest platform capabilities, pricing, and user feedback.
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DevRel at CustomGPT.ai. Passionate about AI and its applications. Here to help you navigate the world of AI tools and make informed decisions for your business.
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