Fish Audio
TTS app and pay-as-you-go API priced per UTF-8 byte; S2.1-Pro claims 83 languages.
Voiceover (text-to-speech) Service
Price
Free tier
paid from $11 a month
Commercial use
With conditions
Fish Audio Terms
Credit the author
—
Agent access
Official MCP server
API key needed
Rules for your agent
Copied.
- Fish Audio (Voiceover (text-to-speech)). TTS app and pay-as-you-go API priced per UTF-8 byte; S2.1-Pro claims 83 languages. Price: free tier; commercial use with conditions; ship inside your app with conditions. Connect: API docs https://docs.fish.audio (API key needed); PyPI fish-audio-sdk. Rule: Use a paid plan for commercial use; the free plan is personal and non-commercial. Rule: Budget about 2 bytes per character for Cyrillic and other non-Latin text. License: https://fish.audio/terms/ (checked 2026-10-10; details: https://agentgid.com/assets/fish-audio/)
Paste it into your prompt or AGENTS.md. It is built from the license and API terms below.
License
| License | Fish Audio Terms |
|---|---|
| Commercial use | Commercial use with conditions |
| Credit | — |
| Inside your app or game | Ship inside your app with conditions |
| Monetized YouTube | Monetized YouTube with conditions |
| AI training | Not stated |
| Bots and bulk downloads | Not stated |
| Rules |
|
Connect it to an agent
| MCP server | Official |
|---|---|
| API | API docs · key needed |
| PyPI | pip install fish-audio-sdk |
| Status page | status.fish.audio |
Pricing
| Free | App: 8,000 credits/month (about 7 min, max 500 chars per generation); API lists a free s2.1-pro-free model. |
|---|---|
| Paid from | $11 a month |
| Usage price | API $15 per 1M UTF-8 bytes (s2.1-pro / s2-pro). App Plus $11/month billed annually ($15 monthly). |
| Good to know | The plan page lists 'Commercial use allowed' from Plus. Model s1 retires 2026-12-31. |
Sources
Read on Oct 10, 2026: fish.audio/plan/, fish.audio/terms/, docs.fish.audio/developer-guide/models-pricing/pricing-an..., docs.fish.audio/developer-guide/models-pricing/models-overview.md.
Not confirmed: Whether the free API model allows commercial use; whether npm fish-audio-sdk is official.
Not legal advice. Check the license page before you ship.
Alternatives to Fish Audio
| Pick for your agent | Source | Price | License | Monetized YouTube | Agent access |
|---|---|---|---|---|---|
| Cartesia Sonic Sonic TTS API (Sonic 3.6 claims 44 languages) with instant and pro voice cloning. |
Free tier · from $5/mo | Commercial: conditions | With conditions | MCP API | |
| ElevenLabs Text-to-speech and voice cloning API in many languages, with an official MCP server. |
Free tier · from $6/mo | Commercial: conditions | With conditions | MCP API | |
| Hume Octave Octave TTS with voice cloning and an official MCP server. |
Free tier · from $3/mo | Commercial: conditions | With conditions | MCP API | |
| Speechify API TTS API (Simba models) with a free plan that lists commercial use. |
Free tier · from $10/mo | Commercial OK | With conditions | API | |
| WellSaid TTS voices with commercial rights on paid plans; API access is available. |
Free tier · from $10/mo | Commercial: conditions | With conditions | API | |
| Chatterbox MIT-licensed open TTS with zero-shot cloning in 23 languages and a built-in Perth watermark. |
Free | Commercial OK No credit | Yes | PyPI | |
| Kokoro-82M 82M-parameter open-weight TTS model under Apache-2.0 with fixed voice packs. |
Free | Commercial OK No credit | Yes | npm | |
| Piper Fast local TTS engine (GPL-3.0) with downloadable voices under per-voice licenses. |
Free | Commercial: conditions Credit varies | With conditions | PyPI |
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Copied. Paste it into your prompt or AGENTS.md.