ThinnestAI is programmable voice AI infrastructure for building human-like AI phone agents at scale. β 100+ languages with seamless multilingual conversations. β Bring your own LLM, STT, TTS, and telephony providers. β Native SIP, Twilio, and workflow integrations. β No-code flow builder with RAG knowledge bases and MCP support. β Real-time voice agents for support, sales, onboarding, and operations. Start building AI voice agents in minutes β no credit card required.
Exploring options beyond Thinnest AI? Try Vapi for developer-first voice APIs, Retell AI to spin up call-center agents, or Cartesia Sonic for ultra-fast, human-like TTS. Teams can also pair bots with GPTBots.ai workflows.