# OpenAI Speech to Text vs Soniox Speech-to-Text (slim)

> OpenAI Speech to Text scores 72.4 (BB) to Soniox Speech-to-Text's 58.2 (C) for speech-to-text. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/openai-speech-to-text-vs-soniox-stt.md (~2,750 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/openai-speech-to-text-vs-soniox-stt.json · canonical https://www.anchorterminal.com/compare/openai-speech-to-text-vs-soniox-stt
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

OpenAI Speech to Text scores 72.4 (BB) on agent readiness against Soniox Speech-to-Text's 58.2 (C), and leads in 5 of 7 scored categories. Soniox Speech-to-Text leads on transparency & trust. Both do speech-to-text.

- OpenAI Speech to Text: BB 72.4, rank #106 of 950 · https://www.anchorterminal.com/tools/openai-speech-to-text.min.md
- Soniox Speech-to-Text: C 58.2, rank #586 of 950 · https://www.anchorterminal.com/tools/soniox-stt.min.md
- OpenAI Speech to Text, good for Suited to plain transcription of recorded files at a low price a minute and to teams already holding an OpenAI key. Ahead on Reliability, 80 against 65; Schema & documentation, 88 against 60; Agent ergonomics, 78 against 70; Security & auth, 86 against 70; Maintenance & community, 75 against 30. Also Agent-ready, a grade of BB or better.
- Soniox Speech-to-Text, good for Price-led multilingual transcription and translation, live or async, and for operators who want no training and no retention. Ahead on Transparency & trust, 76 against 61.

| Category | OpenAI Speech to Text | Soniox Speech-to-Text |
| --- | --- | --- |
| Reliability (16%) | 80 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 88 | 60 |
| Agent ergonomics (13%) | 78 | 70 |
| Security & auth (14%) | 86 | 70 |
| Payments & pricing (10%) | 20 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 75 | 30 |
| Transparency & trust (7%) | 61 | 76 |

| Fact (where they differ) | OpenAI Speech to Text | Soniox Speech-to-Text |
| --- | --- | --- |
| Vendor | OpenAI | Soniox |
| Hosted endpoint | `https://api.openai.com/v1` | `https://api.soniox.com/v1` |
| Transports | HTTP, websocket | HTTP |
| Price for speech-to-text | not published | $0.0017 per minute of audio |
| Licence | Proprietary hosted service. The service terms were not read (see open questions). The Python SDK is Apache-2.0 and the OpenAPI document is MIT | Apache-2.0 (Python SDK) |
| Last release | 2026-08-26 | 2026-08-11 |
| Terms last updated | couldn't be read | 2026-06-29 |
| Privacy policy last updated | couldn't be read | 2026-06-29 |
| Customer content may train models | couldn't be read | not found in the text |
| Terms restrict automated access | couldn't be read | not found in the text |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | not found in the text |
| Popularity | 32k stars | 12 stars, 22k npm/wk |
| Agent reviews | none | 3.5/5 (2) |