#1 pickVerified
ElevenLabs
Our pick for voice quality, covering text-to-speech, voice cloning and voice agents, with a free tier to start.
Free tierfrom $6/moVisit ElevenLabs ↗
Our pickReviewed
Best voice AI API
ElevenLabs is our pick for natural-sounding voices, cloning and voice agents through one API. Deepgram is the choice when fast, cheap transcription is the core of your product, Vapi is the fastest route to phone agents, and Pipecat is the open-source framework for self-hosted voice agents.
Editorial picks
Alternative 1Verified
Deepgram
Fast, low-cost speech-to-text with its own models, plus TTS and a voice agent API.
paid plans: check siteVisit Deepgram ↗
Alternative 2Verified
Vapi
Build phone and web voice agents by mixing transcriber, LLM and voice providers from a wide list (or your own LLM). Expect to pay Vapi's fee plus each provider.
from $29/moVisit Vapi ↗
Open-source pickVerified
Pipecat
BSD-licensed Python framework for real-time voice agents. Self-host for free; you pay only your model providers.
Free tierOpen sourceVisit Pipecat ↗
Editorial picks are never paid for. How we make money.
How we picked
- Voice quality
- Latency for real-time use
- Cost per minute or character
- Agent tooling
Prices are checked against each vendor's official pricing page. Our methodology.
FAQ
What does a voice agent really cost per minute?
Usually the sum of: platform fee + speech-to-text + LLM + text-to-speech + telephony. Platforms like Vapi pass provider costs through, so check each component.
Is there a free text-to-speech API?
ElevenLabs has a free plan with a monthly credit allowance. Deepgram offers a one-time free credit rather than an ongoing free tier.