CosyVoice Review
OSSFull-stack open TTS from Alibaba's speech team: 9 languages plus 18+ Chinese dialects, 150 ms streaming latency claim, instruction control of emotion/dialect/speed, and training + deployment scripts under Apache-2.0.
Among the 46 text-to-speech tools we track, CosyVoice has the 26th-widest language coverage.
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What we know about CosyVoice
CosyVoice sits in the text-to-speech apis category, where it is full-stack open TTS from Alibaba's speech team: 9 languages plus 18+ Chinese dialects, 150 ms streaming latency claim, instruction control of emotion/dialect/speed, and training + deployment scripts under Apache-2.0. We keep this CosyVoice profile grounded in primary sources, each fact dated to when we last confirmed it.
CosyVoice does not publish a public per-minute rate we have been able to verify, so the price figure here stays blank until we can confirm one. We would rather show nothing than a guessed number; if you have a current CosyVoice quote, it is the fastest way for us to close that gap.
On capabilities, CosyVoice covers streaming audio output, instant voice cloning, emotion / style controls, and self-host / on-prem option. Each of those is verified against CosyVoice's own docs or dashboard, not marketing copy.
Placed against the 46 text-to-speech tools we track, CosyVoice's strongest showing is the 26th-widest language coverage - a spread worth weighing against your own priorities.
In total we track 11 verified facts for CosyVoice today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the CosyVoice fact sheet below.
Reviewed by vsref Editorialfacts verified Jul 20, 2026Methodology →
Fact sheet
Every row independently verifiedConsidering a switch? Best CosyVoice alternatives →
STT in this stack
Text-to-speech is half of a voice pipeline: the other half is the speech-to-text that listens. Compare transcription engines on accuracy, streaming latency, and per-minute price: Deepgram, AssemblyAI, GPT-4o Transcribe, or the full speech-to-text comparison →
Voice agents in this stack
The engine is one layer: a voice agent speaks through its text-to-speech engine, but orchestration, telephony, and turn-taking come from the agent platform. Compare the platforms builders pair CosyVoice with: Pipecat, OpenAI Realtime API, Twilio ConversationRelay, or the full voice-agent comparison →
Distribute it
Most CosyVoice voiceover ends up in short-form video, and publishing that video across TikTok, YouTube, and Instagram is a scheduling problem with real per-channel pricing. Compare the schedulers creators actually run: Buffer, Postiz, Mixpost, or the social media scheduling platforms compared →
Avatar video in this stack
A cloned or bring-your-own CosyVoice voice does not have to stay audio-only: AI avatar video platforms lip-sync it onto a talking avatar for finished video. Compare the platforms: HeyGen, Synthesia, Hedra, or the full avatar-video comparison →