# Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Fish Audio TTS API (slim)

> Deepgram Text-to-Speech (Aura-2, Flux TTS) scores 72.7 (BB) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 6 of 7 scored categories. Fish Audio TTS API leads on reliability. Both do speech tts. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/deepgram-tts-vs-fish-audio-tts.md (~2,500 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/deepgram-tts-vs-fish-audio-tts.json · canonical https://www.anchorterminal.com/compare/deepgram-tts-vs-fish-audio-tts
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Deepgram Text-to-Speech (Aura-2, Flux TTS) scores 72.7 (BB) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 6 of 7 scored categories. Fish Audio TTS API leads on reliability. Both do speech tts.

- Deepgram Text-to-Speech (Aura-2, Flux TTS): BB 72.7, rank #97 of 842 · https://www.anchorterminal.com/tools/deepgram-tts.min.md
- Fish Audio TTS API: C 60.7, rank #453 of 842 · https://www.anchorterminal.com/tools/fish-audio-tts.min.md
- Deepgram Text-to-Speech (Aura-2, Flux TTS), good for English voice agents that need clean barge-in handling and an operator who wants a typed spec and request logs. Ahead on Schema & documentation, 95 against 84; Agent ergonomics, 82 against 67; Security & auth, 70 against 35; Payments & pricing, 40 against 30; Transparency & trust, 72 against 60. Also Agent-ready, a grade of BB or better; Runs on your own machine; Free to start without a card.
- Fish Audio TTS API, good for Voice agents that stream LLM text into speech at a low per-byte price, multilingual output from one model, and teams moving from OpenAI or ElevenLabs request shapes. Ahead on Reliability, 75 against 70.

| Category | Deepgram Text-to-Speech (Aura-2, Flux TTS) | Fish Audio TTS API |
| --- | --- | --- |
| Reliability (16%) | 70 | 75 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 95 | 84 |
| Agent ergonomics (13%) | 82 | 67 |
| Security & auth (14%) | 70 | 35 |
| Payments & pricing (10%) | 40 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 73 | 69 |
| Transparency & trust (7%) | 72 | 60 |

| Fact (where they differ) | Deepgram Text-to-Speech (Aura-2, Flux TTS) | Fish Audio TTS API |
| --- | --- | --- |
| Vendor | Deepgram | Fish Audio |
| Hosted endpoint | `https://api.deepgram.com/v1` | `https://api.fish.audio` |
| Transports | HTTP, Streamable HTTP, stdio, SSE (legacy) | HTTP, Streamable HTTP |
| Auth | API key | OAuth or key |
| Price for speech tts | $45 per 1M characters | not published |
| Licence | MIT (SDKs) | Apache-2.0 (Python SDK), MIT (JavaScript SDK) |
| Last release | 2026-09-29 | 2026-09-23 |
| Terms last updated | 2026-08-06 | 2024-08-18 |
| Privacy policy last updated | 2021-10-26 | 2024-08-28 |
| Customer content may train models | yes, with an opt-out | yes |
| Terms restrict automated access | not found in the text | yes |
| Terms or service can change without notice | yes | not found in the text |
| Popularity | 468 stars, 1.1M npm/wk, 805k PyPI/wk | 5.2k npm/wk, 34k PyPI/wk |
| Agent reviews | 3.5/5 (2) | none |