12 Best Fish Speech Alternatives (2026)
Fish Speech is fish audio's open-weight tts line (fish speech -> openaudio s1 -> s2 pro): zero-shot cloning, rich inline emotion tags, streaming - but now under a research-only license.. Teams that switch usually cite price at production volume, language coverage, self-hosting and license control. The alternatives below are ranked by published head-to-head verdicts, not sponsorship.
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Reviewed by vsref Editorialfacts verified Sep 23, 2026Methodology →
Where to switch, by reason
All 51 text-to-speech apis alternatives
How the top Fish Speech alternatives compare
A closer look at the top 6: each Fish Speech alternative's standing among Text-to-speech APIs peers, its verdict record against Fish Speech, and the trade-offs of leaving.
1. CosyVoice
Among the 46 text-to-speech tools we track, CosyVoice has the 26th-widest language coverage.
Head-to-head, CosyVoice takes self-hosted from Fish Speech.
Before switching, weigh what stays behind - Fish Speech vs CosyVoice: ~9× the languages.
Why teams switch: For self-hosting, licensing is critical. CosyVoice uses Apache-2.0 (f6e23a6d), permitting commercial use freely, while Fish Speech uses a custom non-commercial research license (3475a58b), blocking most production deployments. CosyVoice also runs on a lighter 0.5B model (c2ee8a48) with Python 3.10 as the main hardware requirement (057b84d0), versus Fish Speech requiring a GPU with benchmarks on an NVIDIA H200 (6f2bb144) and a 4B model (b5096b66). Both are actively maintained, but the permissive license and lower hardware bar make CosyVoice the clear winner for practical self-hosting.
Self-Hosted verdict →
Overall verdict: Fish Speech wins 3 of the 4 use cases already decided. It supports 80 languages versus CosyVoice's 9 (facts 1f34c7da, 9f46db50), making it the stronger default for multilingual products like dubbing and localization. Its 31,300 GitHub stars versus 22,288 also signal broader community adoption. CosyVoice holds an edge for self-hosted deployments needing permissive Apache-2.0 licensing and lighter hardware, but that is a narrower audience. For most buyers, Fish Speech is the safer overall choice.
Full CosyVoice vs Fish Speech comparison → · CosyVoice review →
2. Amazon Polly
Among the 10 text-to-speech tools we track, Amazon Polly has the 1st-cheapest fast-model rate and the 10th-widest language coverage - a fit for multilingual and localization projects.
Seen from the other side, Fish Speech vs Amazon Polly: ~2× the languages, adds instant voice cloning.
Amazon Polly lists $30 per 1M characters, verified July 2026.
| Monthly volume | $ / 1M chars | $ / audio-min | Monthly bill |
|---|---|---|---|
| 200K chars/moHobby project | $30 | $0.0285 | $6 |
| 2M chars/moProduct feature | $30 | $0.0285 | $60 |
| 20M chars/moAt scale | $30 | $0.0285 | $600 |
Usage-priced at $30 per 1M characters (≈ $0.0285 per audio-minute), verified Jul 20, 2026. Effective rates from published pricing; subscription plans resolve to plan fee plus overage. ~950 characters ≈ 1 audio minute. How we compute costs →
3. Azure Speech
Among the 46 text-to-speech tools we track, Azure Speech has the 3rd-widest language coverage and the 6th-cheapest flagship rate - a fit for multilingual and localization projects and cost-sensitive, high-volume work.
Before switching, weigh what stays behind - Fish Speech vs Azure Speech: ~20% fewer languages.
Its published rate is $22 per 1M characters, verified July 2026.
| Monthly volume | $ / 1M chars | $ / audio-min | Monthly bill |
|---|---|---|---|
| 200K chars/moHobby project | $22 | $0.0209 | $4.40 |
| 2M chars/moProduct feature | $22 | $0.0209 | $44 |
| 20M chars/moAt scale | $22 | $0.0209 | $440 |
Usage-priced at $22 per 1M characters (≈ $0.0209 per audio-minute), verified Jul 20, 2026. Effective rates from published pricing; subscription plans resolve to plan fee plus overage. ~950 characters ≈ 1 audio minute. How we compute costs →
4. CAMB.AI
Among the 46 text-to-speech tools we track, CAMB.AI has the 2nd-widest language coverage - a fit for multilingual and localization projects.
Before switching, weigh what stays behind - Fish Speech vs CAMB.AI: about half the languages.
5. Cartesia
Among the 46 text-to-speech tools we track, Cartesia has the 9th-widest language coverage and the 3rd-fastest time-to-first-byte - a fit for multilingual and localization projects and real-time, conversational apps.
The reverse angle matters too - Fish Speech vs Cartesia: ~2× the languages.
6. Chatterbox
Among the 46 text-to-speech tools we track, Chatterbox has the 18th-widest language coverage.
The reverse angle matters too - Fish Speech vs Chatterbox: ~3× the languages, adds streaming audio output.