Retell AI
Retell AI is developer-focused voice AI infrastructure for building, testing, and deploying phone agents that make and receive calls using custom LLMs, function calling, and low-latency speech. Best for teams automating call-center work like scheduling, lead qualification, and support; a Vapi or Bland AI alternative.
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Alternatives to Retell AI
MindStudio
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Lindy
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Taskade
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SIMA
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Vapi
Vapi is a developer-first platform for building production-grade voice AI agents that make and receive phone calls with sub-second latency. It orchestrates speech-to-text, your choice of LLM (GPT, Claude, Gemini), and text-to-speech via APIs and telephony, and is a common alternative to Retell AI and Bland for automating phone support, lead qualification, and scheduling.
