Vapi vs Retell AI

Vapi.ai offers a cutting‑edge voice-driven UI/UX and SDK for devs. Integration with platforms like iOS shortcuts or React via NPM has been attempted by some developers. Build, test, and deploy advanced voice AI agents in minutes with Vapi. The platform for developers creating conversational voice AI. 

It combines speech-to-text, large language models (LLMs), and text‑to‑speech, giving you full control over each component—such as choosing providers like OpenAI, Anthropic, Deepgram, ElevenLabs, and others. Vapi CEO Jordan Dearsley shares how Vapi grew to $8M over the past 5 years. Vapi has raised $20.1M and hit a $13.5M valuation in 2025. 

Founded in 2023, Retell AI is built by a tight-knit team of founders with rich backgrounds at Google, Meta, TikTok, ByteDance, and more. We launched publicly in early 2022, were accepted into Y Combinator in November 2023, and raised $4.6M in seed funding in May 2024 to propel innovation further.

Retell AI's mission is to transform how businesses connect with customers—creating AI voice agents that break communication barriers and create smoother, more responsive experiences.