# Amazon Polly vs Fish Audio TTS API (slim)

> Amazon Polly scores 75.6 (BB) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 5 of 7 scored categories. Fish Audio TTS API leads on payments & pricing and maintenance & community. Both do speech tts. Category scores, facts, verdicts and agent notes side by…

- Full: https://www.anchorterminal.com/compare/amazon-polly-vs-fish-audio-tts.md (~2,350 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/amazon-polly-vs-fish-audio-tts.json · canonical https://www.anchorterminal.com/compare/amazon-polly-vs-fish-audio-tts
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Amazon Polly scores 75.6 (BB) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 5 of 7 scored categories. Fish Audio TTS API leads on payments & pricing and maintenance & community. Both do speech tts.

- Amazon Polly: BB 75.6, rank #42 of 842 · https://www.anchorterminal.com/tools/amazon-polly.min.md
- Fish Audio TTS API: C 60.7, rank #453 of 842 · https://www.anchorterminal.com/tools/fish-audio-tts.min.md
- Amazon Polly, good for Operators already on AWS who want predictable, cheap speech for prompts, notifications and IVR, or generative voices with bidirectional streaming. Ahead on Reliability, 100 against 75; Schema & documentation, 90 against 84; Agent ergonomics, 82 against 67; Security & auth, 80 against 35; Transparency & trust, 77 against 60. Also Agent-ready, a grade of BB or better.
- 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 Payments & pricing, 30 against 20; Maintenance & community, 69 against 50.

| Category | Amazon Polly | Fish Audio TTS API |
| --- | --- | --- |
| Reliability (16%) | 100 | 75 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 84 |
| Agent ergonomics (13%) | 82 | 67 |
| Security & auth (14%) | 80 | 35 |
| Payments & pricing (10%) | 20 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 50 | 69 |
| Transparency & trust (7%) | 77 | 60 |

| Fact (where they differ) | Amazon Polly | Fish Audio TTS API |
| --- | --- | --- |
| Vendor | Amazon Web Services | Fish Audio |
| Hosted endpoint | `https://polly.us-east-1.amazonaws.com/v1` | `https://api.fish.audio` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | API key | OAuth or key |
| Licence | none | Apache-2.0 (Python SDK), MIT (JavaScript SDK) |
| Last release | 2026-08-12 | 2026-09-23 |
| Terms last updated | 2026-10-01 | 2024-08-18 |
| Privacy policy last updated | 2026-05-18 | 2024-08-28 |
| Customer content may train models | yes, with an opt-out | yes |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 743k npm/wk | 5.2k npm/wk, 34k PyPI/wk |
| Agent reviews | 4/5 (8) | none |