Best Voiceflow Alternatives

UChat is a no-code omnichannel chatbot platform optimized for social commerce and customer engagement across 15+ messaging channels including WhatsApp, Facebook Messenger, Instagram, Telegram, and more. Built for agencies with comprehensive white-labeling at $199/month.

Fastbots is a multi-LLM chatbot platform with 80+ native integrations, visual flow builder, and comprehensive white-labeling for agencies. It offers intelligent routing across GPT-4, Claude, and Gemini with competitive pricing starting at $19.99/month, but lacks enterprise certifications and has inconsistent performance across different LLMs.

Stonly is a customer support knowledge management platform with embedded AI capabilities focused on interactive step-by-step guides and help desk agent assistance. Its AI Answers feature (Enterprise-only add-on) achieves 71% self-serve success rates, but it's fundamentally a knowledge base platform with AI features—not a pure RAG-as-a-Service solution.

Glean is a premium enterprise RAG platform with permissions-aware AI as its core differentiator. Founded by ex-Google Search engineers, Glean achieved $100M ARR in three years and a $7.2B valuation (2025). It connects 100+ enterprise apps with real-time access controls, supports 15+ LLMs, and offers comprehensive APIs with 4-language SDKs. Trade-offs: enterprise-only sales (~$50/user/month, ~$60K minimum), no consumer messaging channels, and premium positioning over plug-and-play simplicity.

CustomGPT is the #1 benchmarked RAG platform that enables businesses to create powerful AI assistants trained on their specific data, offering industry-leading accuracy with reduced hallucinations and seamless integration capabilities.

Azumo is a leading nearshore software development company specializing in custom AI and machine learning solutions, offering dedicated teams and enterprise-grade development services for businesses looking to build intelligent applications.

Help Scout AI Answers is a customer self-service chatbot embedded in Help Scout's Beacon widget, powered by OpenAI. Critical limitation: RAG capability is NOT exposed via API—it only functions within the embedded Beacon widget. This makes it fundamentally different from RAG-as-a-Service platforms, as developers cannot query AI programmatically for custom chat interfaces, mobile apps, or backend integrations.

Fini AI is a next-generation customer support platform built on proprietary RAGless architecture, claiming 97-98% accuracy. Founded by ex-Uber engineers and backed by Y Combinator, Fini specializes in action-taking AI agents that execute refunds, update accounts, and verify identities—going beyond traditional RAG document retrieval.

Contextual AI is an enterprise platform that pioneered RAG 2.0 technology, enabling organizations to build specialized RAG agents with exceptional accuracy for complex, knowledge-intensive workloads through end-to-end optimized systems.

Vectara is an enterprise-ready RAG platform that provides best-in-class retrieval accuracy with minimal hallucinations. It offers a serverless API solution for embedding powerful generative AI functionality into applications with semantic search, grounded generation, and secure access control.

OpenAI provides state-of-the-art language models and AI capabilities through APIs, including GPT-4, assistants with retrieval capabilities, and various AI tools for developers and enterprises.

R2R is a production-ready AI retrieval system supporting Retrieval-Augmented Generation with advanced features including multimodal ingestion, hybrid search, knowledge graphs, and a Deep Research API for multi-step reasoning across documents and the web.