Best tools for building AI chatbots
Customer-facing chat and voice agents. Updated 2026-10-15.
#1 Voiceflow
Collaborative platform for designing and deploying AI chat and voice agents.
Chatbot builder · Pricing: Free tier + paid plans (see site)
Pros: Visual design for teams · Knowledge base built in
Cons: Pricier for small projects
Official site →#2 Botpress
Platform to build LLM-powered chatbots and deploy to web and messaging channels.
Chatbot builder · Pricing: Free tier + paid plans (see site)
Pros: Many channel integrations · Generous starting tier
Cons: Usage-based AI spend
Official site →#3 Vercel AI SDK
TypeScript toolkit for building AI chat, streaming UIs and agents across model providers.
AI app toolkit · Pricing: Open source
Pros: Provider-agnostic · Great streaming UI helpers
Cons: TypeScript/JS only
Official site →#4 Zapier
No-code automation across thousands of apps, plus AI agents and MCP.
Workflow automation · Pricing: Free tier + paid plans (see site)
Pros: Largest app catalog · Easiest to start
Cons: Gets expensive with volume
Official site →