Data Ingestion & Knowledge Sources
100MB file limits – PDF, DOC, DOCX, TXT, CSV bulk imports⚠️ No JavaScript rendering – SPAs and dynamic sites unsupportedWebsite crawling – 5K URLs (Starter), unlimited (Advanced+) via sitemapCloud integrations – Google Drive/Notion (Professional+), Confluence (Enterprise only)Storage scales – 500K to 100M chars, $10 per 20M additional
✅ PDF uploads & public website crawling – Zendesk help center content indexing supported✅ Proprietary interactive guide format – Primary content model with visual editor⚠️ No cloud storage integrations – Missing Google Drive, Dropbox, Notion, SharePoint, YouTubeContent limits: Basic (5 guides, 400 views/mo), Small Business (unlimited, 4K views/mo), Enterprise (custom)
1,400+ file formats – PDF, DOCX, Excel, PowerPoint, Markdown, HTML + auto-extraction from ZIP/RAR/7Z archivesWebsite crawling – Sitemap indexing with configurable depth for help docs, FAQs, and public contentMultimedia transcription – AI Vision, OCR, YouTube/Vimeo/podcast speech-to-text built-inCloud integrations – Google Drive, SharePoint, OneDrive, Dropbox, Notion with auto-syncKnowledge platforms – Zendesk, Freshdesk, HubSpot, Confluence, Shopify connectorsMassive scale – 60M words (Standard) / 300M words (Premium) per bot with no performance degradation
Native messaging – Slack, WhatsApp, Telegram, Messenger, Google Chat⚠️ Teams via Zapier only – No native Microsoft Teams integrationZapier connects 8K+ apps – Triggers for forms, conversations, feedbackEnterprise CRM/helpdesk – Zendesk, Freshdesk, Salesforce, Zoho integrations
✅ Deep help desk integrations – Zendesk, Salesforce Service Cloud, Freshdesk, ServiceNow✅ Zapier integration – Webhook triggers for form submissions and completions✅ Analytics integrations – Segment, Google Analytics⚠️ No messaging integrations – Missing Slack, WhatsApp, Telegram, Microsoft Teams
Website embedding – Lightweight JS widget or iframe with customizable positioningCMS plugins – WordPress, WIX, Webflow, Framer, SquareSpace native support5,000+ app ecosystem – Zapier connects CRMs, marketing, e-commerce toolsMCP Server – Integrate with Claude Desktop, Cursor, ChatGPT, WindsurfOpenAI SDK compatible – Drop-in replacement for OpenAI API endpointsLiveChat + Slack – Native chat widgets with human handoff capabilities
50+ languages – Automatic detection and response without manual configurationSearchable conversation history – Export XLSX/CSV/JSON with date/sentiment filtersLead capture – Pre-built fields plus custom forms with CAPTCHA⚠️ Human handoff Enterprise-only – Requires Enterprise tier + Zendesk integration
✅ Interactive step-by-step guides – Visual flow builder with branching logic✅ Decision trees and checklists – Task management with progress tracking✅ Contact forms and lead capture – Integrated customer information collection✅ Multi-language support – Auto-translation on Enterprise plan
✅ #1 accuracy – Median 5/5 in independent benchmarks, 10% lower hallucination than OpenAI✅ Source citations – Every response includes clickable links to original documents✅ 93% resolution rate – Handles queries autonomously, reducing human workload✅ 92 languages – Native multilingual support without per-language config✅ Lead capture – Built-in email collection, custom forms, real-time notifications✅ Human handoff – Escalation with full conversation context preserved
Visual dashboard editor – Logo, colors, messages, positioning (no CSS injection)$49/month white-label – Branding removal as separate paid add-onDomain restrictions – 300 req/min rate limit, IP blocking available
✅ Visual no-code editor – Intuitive interface for guides, decision trees, forms✅ CSS customization on all paid plans – White-labeling Enterprise only✅ Small learning curve – Users create guides in under 30 minutes⚠️ Cannot edit on mobile devices – Desktop-only guide creation
Full white-labeling included – Colors, logos, CSS, custom domains at no extra cost2-minute setup – No-code wizard with drag-and-drop interfacePersona customization – Control AI personality, tone, response style via pre-promptsVisual theme editor – Real-time preview of branding changesDomain allowlisting – Restrict embedding to approved sites only
Proprietary GPT Router – Auto-selects optimal model per query from GPT-4o, Claude, Gemini, LLaMA, MistralCredit consumption varies – Standard 1x, high-quality models 2-10x per responseGuidelines system – Control tone, phrases, terminology, formatting (no fine-tuning)GPT-4o requires Professional+ – GPT-4o mini available all plans
⚠️ Undisclosed proprietary LLM – No model selection or transparency on provider✅ AI Profiles (20) & Custom Instructions (100) – Define tone, boundaries, behavior✅ Guided AI Answers – Predefined responses for sensitive scenarios bypass AI✅ Knowledge-grounded approach – Anchored responses reduce hallucinations vs generic chatbots
GPT-5.1 models – Latest thinking models (Optimal & Smart variants)GPT-4 series – GPT-4, GPT-4 Turbo, GPT-4o availableClaude 4.5 – Anthropic's Opus available for EnterpriseAuto model routing – Balances cost/performance automaticallyZero API key management – All models managed behind the scenes
Developer Experience ( A P I & S D Ks)
⚠️ Rated 2/5 for developers – No-code focused with poor API supportNo official SDKs – Zero Python/JS libraries or Postman collections$99/month API access – Requires Business/Enterprise tier or paid add-onPoor documentation – Incomplete specs, missing parameters, no community support
✅ REST API – User provisioning, content management, widget control✅ Mobile SDKs (Enterprise only) – iOS, Android, React Native, Flutter⚠️ No Python/Node.js SDKs – No GraphQL, OpenAPI specs, or API sandbox
REST API – Full-featured for agents, projects, data ingestion, chat queriesPython SDK – Open-source customgpt-client with full API coveragePostman collections – Pre-built requests for rapid prototypingWebhooks – Real-time event notifications for conversations and leadsOpenAI compatible – Use existing OpenAI SDK code with minimal changes
RAG exclusively – No fine-tuning, responses grounded in knowledge bases70% autonomous resolution claimed – User reviews report 90% accuracy50M+ generations at scale – Proven Writesonic infrastructure⚠️ Complex query challenges – Unexpected responses noted in reviews
✅ 71% self-serve success rate – Company data with AI Answers feature✅ 70-76% ticket reduction – Documented in case studies✅ 99.9% uptime claimed – No published SLA or response time details⚠️ Flow reports update every 15 min – Not real-time analytics
Sub-second responses – Optimized RAG with vector search and multi-layer cachingBenchmark-proven – 13% higher accuracy, 34% faster than OpenAI Assistants APIAnti-hallucination tech – Responses grounded only in your provided contentOpenGraph citations – Rich visual cards with titles, descriptions, images99.9% uptime – Auto-scaling infrastructure handles traffic spikes
Customization & Flexibility ( Behavior & Knowledge)
Guidelines system – Control tone, phrases, formatting, response lengthBot limits by tier – 1 (Starter) to Multiple (Advanced), $99 per 3 additional⚠️ Auto-sync Advanced+ only – Lower tiers require manual retrainingBot duplication – Quickly create similar bots from templates
✅ CSS and HTML customization – Change layout and look with custom code✅ Intuitive no-code tools – Easy customization without coding for basics✅ Personalized content – Use customer data for targeted experiences✅ Rich media support – Images, GIFs, videos, annotations
Live content updates – Add/remove content with automatic re-indexingSystem prompts – Shape agent behavior and voice through instructionsMulti-agent support – Different bots for different teamsSmart defaults – No ML expertise required for custom behavior
Free: $0 – 100 messages, 500K chars, 1 botStarter: $16-19/mo – 1K messages, 10M charsProfessional: $41-49/mo – 3K messages, 100M chars, 2 botsAdvanced: $249-299/mo + $500 onboarding – 12K messages, multiple botsEnterprise: $800+/mo – Custom limits, SSO, audit logs⚠️ Expensive add-ons – Branding $49, API $99, handoff $199, teams $25/user/mo
Basic (Free): 5 guides, 400 views/mo, 1 seat, single languageSmall Business ($249/mo, $199/mo annual): Unlimited guides, 4K views/mo, 5 seats, CSS customizationEnterprise (~$39K/year avg): Custom views, unlimited seats, AI Answers add-on, Mobile SDKs, SAML SSO⚠️ Overage pricing escalates – +15K views = $200/mo, auto-upgrade after 2 months
Standard: $99/mo – 60M words, 10 botsPremium: $449/mo – 300M words, 100 botsAuto-scaling – Managed cloud scales with demandFlat rates – No per-query charges
SOC 2 Type II certified – Verified via Sprinto Trust CenterGDPR + HIPAA ready – AES-256 at rest, TLS 1.3 in transitZero-retention policy – Data NOT used for model trainingEnterprise features – SSO/SAML, audit logs, custom retention, DPA⚠️ Missing certifications – ISO 27001, PCI, VPC/private cloud not confirmed
✅ SOC 2 Type 2, GDPR, HIPAA, ISO 27001 – PCI, CSA Star Level 1 compliant✅ Trust Center – trust.stonly.com with security documentation, subprocessor lists✅ SAML 2.0 SSO (Enterprise) – IP allowlisting, advanced RBAC, 2FA
SOC 2 Type II + GDPR – Third-party audited complianceEncryption – 256-bit AES at rest, SSL/TLS in transitAccess controls – RBAC, 2FA, SSO, domain allowlistingData isolation – Never trains on your data
Observability & Monitoring
Basic analytics – Total conversations, messages, new users, lead conversionsSentiment tracking – Thumbs up/down ratings with post-chat feedback popupsConversation exports – XLSX, CSV, JSON with date and sentiment filtering⚠️ Advanced analytics Enterprise-only – Trending topics, predictive insights locked to EnterpriseZapier triggers – Monitor form entries, inactive conversations, feedback submissions
✅ Insights Dashboard – Views, visitors, bounce rates, drop-off analysis✅ NPS surveys (all plans) – CSAT and CES Enterprise only✅ Data export – Segment, Zapier, Google Analytics integration
Real-time dashboard – Query volumes, token usage, response timesCustomer Intelligence – User behavior patterns, popular queries, knowledge gapsConversation analytics – Full transcripts, resolution rates, common questionsExport capabilities – API export to BI tools and data warehouses
Writesonic ecosystem – $250M+ valuation, Y Combinator backed, 50M+ generations⚠️ Inconsistent support – 4+ day waits reported in reviewsEnterprise dedicated support – Higher tiers get priority assistanceProduct Hunt #1 – Product of the Day (May 2023)
✅ 4.8/5 G2 rating (132 reviews) – Ease of use praised in 32 reviews✅ Email and chat support – Dedicated support on Enterprise plan✅ Pre-built templates – Quick onboarding, guides created in under 30 minutes
Comprehensive docs – Tutorials, cookbooks, API referencesEmail + in-app support – Under 24hr response timePremium support – Dedicated account managers for Premium/EnterpriseOpen-source SDK – Python SDK, Postman, GitHub examples5,000+ Zapier apps – CRMs, e-commerce, marketing integrations
Additional Considerations
✅ 9.3/10 ease of use – ~3 hour setup for non-technical SMBs⚠️ Confusing pricing – Large tier jumps ($41 → $249 → $800) noted in reviews⚠️ Hidden costs stack – Add-ons can exceed base plan costs⚠️ Limited developer flexibility – No-code focus sacrifices API/customization depth
⚠️ Limited UI customization – Cannot fully match specific brand requirements⚠️ No offline access – Requires internet connectivity for guide availability⚠️ Performance degradation with large guides – Scalability concerns with complexity⚠️ View-based pricing – Additional fees for exceeding 4K views/mo
Time-to-value – 2-minute deployment vs weeks with DIYAlways current – Auto-updates to latest GPT modelsProven scale – 6,000+ organizations, millions of queriesMulti-LLM – OpenAI + Claude reduces vendor lock-in
No- Code Interface & Usability
Visual dashboard – Drag-and-drop files, URL crawling, no coding required3-hour typical setup – Longer than 2-minute competitors but highly rated⚠️ No CSS injection – Limited to visual editor customization onlyTrade-off – Usability over developer flexibility and API depth
✅ 4.8/5 ease of use rating – Visual drag-and-drop editor, no coding required✅ Small learning curve – Non-technical teams productive quickly✅ Pre-built templates – Common scenarios covered for faster creation
2-minute deployment – Fastest time-to-value in the industryWizard interface – Step-by-step with visual previewsDrag-and-drop – Upload files, paste URLs, connect cloud storageIn-browser testing – Test before deploying to productionZero learning curve – Productive on day one
Market position – No-code chatbot for SMBs prioritizing ease over developer flexibilityTarget customers – SMBs without developers needing 3-hour setup, 50+ languages supportKey competitors – Chatbase.co, SiteGPT, CustomGPT, Wonderchat no-code chatbot builders✅ Competitive advantages – GPT Router, 9.3/10 ease, SOC 2 Type II, 50M+ generations⚠️ Pricing disadvantage – Large tier jumps ($41→$249→$800), expensive add-ons, $500 onboarding fee
✅ Unique interactive guide format – Structured support content vs free-form chat✅ 70-76% ticket reduction – 71% self-serve success rate documentedvs CustomGPT: Different categories (knowledge base vs RAG-as-a-Service)Target: Support teams using Zendesk/Salesforce, not RAG developers
Market position – Leading RAG platform balancing enterprise accuracy with no-code usability. Trusted by 6,000+ orgs including Adobe, MIT, Dropbox.Key differentiators – #1 benchmarked accuracy • 1,400+ formats • Full white-labeling included • Flat-rate pricingvs OpenAI – 10% lower hallucination, 13% higher accuracy, 34% fastervs Botsonic/Chatbase – More file formats, source citations, no hidden costsvs LangChain – Production-ready in 2 min vs weeks of development
Proprietary GPT Router – Auto-selects optimal LLM per query for speed/quality/reliabilityOpenAI Models – GPT-4o mini (all plans), GPT-4o (Professional+), GPT-4 TurboMulti-provider support – Claude, Gemini, LLaMA, Mistral via GPT Router integrationNo manual selection – System handles routing automatically based on query characteristicsCredit consumption varies – Standard 1x, high-quality models 2-10x per response
⚠️ Undisclosed Proprietary LLM – No model selection or transparency✅ AI Profiles (20) & Custom Instructions (100) – Define tone and boundaries✅ Guided AI Answers – Predefined responses for sensitive scenarios✅ Knowledge-grounded approach – Anchored responses reduce hallucinations
OpenAI – GPT-5.1 (Optimal/Smart), GPT-4 seriesAnthropic – Claude 4.5 Opus/Sonnet (Enterprise)Auto-routing – Intelligent model selection for cost/performanceManaged – No API keys or fine-tuning required
RAG exclusively – No fine-tuning, responses grounded in uploaded knowledge bases✅ 70% autonomous resolution – 80% support reduction claimed, 90% accuracy user-reportedGPT Router integration – Optimal model per query for speed/quality balance⚠️ Complex query challenges – Some reviews note unexpected responses requiring refinementCharacter limits – 500K (Free) → 10M (Starter) → 100M (Advanced) capacity
✅ AI Answers (Enterprise add-on) – Grounded in guides, websites, PDFs✅ 71% self-serve success rate – Confidence-based fallback to ML search⚠️ Limited data sources – No Google Drive, Dropbox, Notion, SharePoint, YouTube⚠️ Manual content updates – No automatic syncing from external sources
GPT-4 + RAG – Outperforms OpenAI in independent benchmarksAnti-hallucination – Responses grounded in your content onlyAutomatic citations – Clickable source links in every responseSub-second latency – Optimized vector search and cachingScale to 300M words – No performance degradation at scale
Customer support automation – 70% query resolution, 80% support volume reduction claimedLead generation – Pre-built capture fields with custom options and CAPTCHAMulti-language support – Automatic detection across 50+ languages without configuration✅ Rapid deployment – 3-hour setup for SMBs without dedicated developersMulti-channel engagement – Slack, WhatsApp, Telegram, Messenger, Google Chat native messagingE-commerce support – Product info, order status, customer inquiry automation
✅ Customer support ticket deflection – 70-76% reduction through interactive guides✅ Deep help desk integration – Zendesk, Salesforce, Freshdesk, ServiceNow workflows✅ Interactive onboarding – Step-by-step guides, decision trees, checklists✅ Multi-language support – Auto-translation for global teams (Enterprise)
Customer support – 24/7 AI handling common queries with citationsInternal knowledge – HR policies, onboarding, technical docsSales enablement – Product info, lead qualification, educationDocumentation – Help centers, FAQs with auto-crawlingE-commerce – Product recommendations, order assistance
✅ SOC 2 Type II certified – Verified via Sprinto Trust CenterGDPR + HIPAA ready – EU compliance, healthcare-ready (not full HIPAA certified)AES-256 at rest, TLS 1.3 transit – Industry-standard encryption protocolsZero-retention policy – Customer data NOT used for AI model trainingEnterprise features – SSO/SAML, audit logs, custom retention, DPA coverage⚠️ Missing certifications – ISO 27001, PCI, VPC/private cloud not confirmed
✅ SOC 2 Type 2, GDPR, HIPAA, ISO 27001 – PCI, CSA Star Level 1✅ Trust Center – trust.stonly.com with documentation, subprocessor lists✅ SAML 2.0 SSO (Enterprise) – IP allowlisting, advanced RBAC, 2FA⚠️ Data residency not documented – May limit certain jurisdiction deployments
SOC 2 Type II + GDPR – Regular third-party audits, full EU compliance256-bit AES encryption – Data at rest; SSL/TLS in transitSSO + 2FA + RBAC – Enterprise access controls with role-based permissionsData isolation – Never trains on customer dataDomain allowlisting – Restrict chatbot to approved domains
Free: $0 – 100 messages, 500K chars, 1 botStarter: $16-19/mo – 1K messages, 10M chars (annual saves ~20%)Professional: $41-49/mo – 3K messages, 100M chars, 2 bots, Google Drive/NotionAdvanced: $249-299/mo + $500 onboarding – 12K messages, multiple bots, auto-syncEnterprise: $800+/mo – Custom limits, SSO, audit logs, advanced analytics⚠️ Add-ons stack – Branding $49, API $99, handoff $199, teams $25/user/mo
Basic (Free): 5 guides, 400 views/mo, 1 seat, single languageSmall Business ($249/mo, $199/mo annual): Unlimited guides, 4K views/mo, 5 seats, CSS customizationEnterprise (~$39K/year avg): Custom views, unlimited seats, white-label, SAML SSO, Mobile SDKs⚠️ Overage pricing: +15K views = $200/mo, auto-upgrade after 2 consecutive months
Standard: $99/mo – 10 chatbots, 60M words, 5K items/botPremium: $449/mo – 100 chatbots, 300M words, 20K items/botEnterprise: Custom – SSO, dedicated support, custom SLAs7-day free trial – Full Standard access, no chargesFlat-rate pricing – No per-query charges, no hidden costs
Writesonic ecosystem – $250M+ valuation, Y Combinator backed, 50M+ generations✅ Infrastructure proven – 10M+ users, Forbes 30 Under 30 founder⚠️ Inconsistent support – 4+ day waits reported, mixed quality reviewsEnterprise support – Dedicated assistance for higher-tier plans onlyProduct Hunt #1 – Product of the Day (May 2023)
✅ 4.8/5 G2 rating (132 reviews) – Ease of use praised consistently✅ Email and chat support – Dedicated support on Enterprise plan✅ Pre-built templates & tutorials – Guides created in under 30 minutes
Documentation hub – Docs, tutorials, API referencesSupport channels – Email, in-app chat, dedicated managers (Premium+)Open-source – Python SDK, Postman, GitHub examplesCommunity – User community + 5,000 Zapier integrations
Limitations & Considerations
⚠️ Limited free tier – 100 messages, training consumes credits⚠️ No native handoff – $199/mo add-on for email ticket escalation⚠️ Confusing pricing – Difficulty choosing plans, large tier jumps⚠️ Technical issues – Freezing during uploads, real-time update delays⚠️ Poor developer experience – Rated 2/5, no SDKs, incomplete API docs⚠️ Customization limits – No CSS injection or advanced styling
⚠️ NOT a RAG-as-a-Service platform – Knowledge base tool with embedded AI⚠️ AI Answers Enterprise-gated – ~$39K/year, not available on $249/mo tier⚠️ Limited data sources – PDF, web, Zendesk only; no cloud storage⚠️ No messaging integrations – Missing Slack, WhatsApp, Telegram, Microsoft TeamsNot ideal for: Pure RAG API, multi-tenant SaaS backends, model customization needs
Managed service – Less control over RAG pipeline vs build-your-ownModel selection – OpenAI + Anthropic only; no Cohere, AI21, open-sourceReal-time data – Requires re-indexing; not ideal for live inventory/pricesEnterprise features – Custom SSO only on Enterprise plan
AI Agents (Beta) – Task-oriented assistants with intent detection, decision-making, API executionAdvanced tier required – $249-299/mo + $500 onboarding fee for AI AgentsIntent recognition – Train on example phrases without exact keyword matchingAPI execution – HTTP blocks for real-time integrations (orders, CRM, automations)⚠️ No native human handoff – Requires Zapier to Zendesk/Freshdesk, adds latency
✅ Knowledge-grounded responses – Verified structured knowledge prevents hallucinations✅ AI Agent Assist – Summarizes tickets, suggests paths, drafts responses✅ Process automation – Define workflows linked to back-office tools✅ 71% self-serve success rate – Personalized knowledge adapts to needs
Custom AI Agents – Autonomous GPT-4/Claude agents for business tasksMulti-Agent Systems – Specialized agents for support, sales, knowledgeMemory & Context – Persistent conversation history across sessionsTool Integration – Webhooks + 5,000 Zapier apps for automationContinuous Learning – Auto re-indexing without manual retraining
R A G-as-a- Service Assessment
Platform type – No-code chatbot with RAG, NOT pure RAG-as-a-Service platformRAG implementation – Exclusively for grounding responses in uploaded knowledge bases✅ 70-90% accuracy – 70% autonomous resolution, 90% accuracy user-reported for KB queries⚠️ Developer experience gap – No SDKs, incomplete docs, rated 2/5 for developersTarget market – SMBs prioritizing 3-hour setup over developer-focused RAG customizationUse case fit – Customer-facing chatbots with simple retrieval over complex RAG pipelines
⚠️ NOT a RAG-as-a-Service platform – Knowledge base tool with embedded AI⚠️ Limited data sources – PDF, public web, Zendesk only✅ Strong hallucination controls – Grounded in structured contentBest for: Customer support ticket deflection, not flexible RAG backends
Platform type – TRUE RAG-AS-A-SERVICE with managed infrastructureAPI-first – REST API, Python SDK, OpenAI compatibility, MCP ServerNo-code option – 2-minute wizard deployment for non-developersHybrid positioning – Serves both dev teams (APIs) and business users (no-code)Enterprise ready – SOC 2 Type II, GDPR, WCAG 2.0, flat-rate pricing
Core Knowledge Base Features N/A
✅ Interactive step-by-step guides – Visual flow builder with branching logic✅ Decision trees, checklists, forms – Contact forms and lead capture✅ Content versioning – Side-by-side comparison, instant restore (Business+)✅ Multi-language support – Auto-translation on Enterprise plan
N/A
A I Answers Feature ( Enterprise Only) N/A
⚠️ Enterprise add-on only – Not included in Small Business plan✅ Generative AI grounded – Anchored in Stonly guides, websites, PDFs✅ Confidence-based fallback – Switches to ML-powered search when confidence low✅ 71% self-serve success rate – Hallucination reduction through knowledge-grounding
N/A
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