13 Free AI Tools to Build a Chatbot (2026)
The best free AI tools to build a chatbot, ranked by our checks. Last checked 18 Oct 2026.
Ranked AI tools you can use to build a chatbot. Each listing shows verified free-tier details from the vendor pricing page; picks require at least one month of free access (free plan, monthly credits, or a trial of 30+ days).
13 free tools
Each with its last-checked date
Botpress
Build LLM chatbots and autonomous agents with visual Studio.
Free forever, 100 conversations, 3 seats, 3 AI agents
Free accountTry
Tidio
Live chat and Lyro AI bot for ecommerce support automation.
Free forever, 50 billable conversations
Free accountTry
Convai
Conversational NPCs for Unity/Unreal with knowledge and actions.
Free forever, 100 interactions/month, 60 min
Free accountTry
tawk.to
Free live chat with AI assist add-on.
Free forever, Free live chat forever
Free accountTry
