# Speech-to-text APIs for AI agents (slim)

> 10 speech-to-text listings ranked by the Anchor benchmark. Leader Azure AI Speech speech-to-text (BB). APIs that turn audio into text, streaming or in batch. Compared on accuracy across accents, noise, names and overlapping speakers, streaming latency, languages, diarisation and cost per audio minute.

- Full: https://www.anchorterminal.com/categories/speech-to-text.md (~3,850 tokens) · this version ~580 tokens · JSON https://www.anchorterminal.com/categories/speech-to-text.json · canonical https://www.anchorterminal.com/categories/speech-to-text
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

- Tools: 10 · agent-ready (BB+): 4 · accept x402: 0 · JSON: https://www.anchorterminal.com/api/v1/tools.json · by capability: https://www.anchorterminal.com/api/v1/capabilities.json
- Capabilities: speech.stt, speech.streaming, speech.batch, speech.diarisation, speech.languages

| # | Tool | Grade | Score | Confidence | x402 | Auth | Where | Slim |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 23 | Azure AI Speech speech-to-text | BB | 77 | medium | no | OAuth or key | hosted | https://www.anchorterminal.com/tools/azure-speech-to-text.min.md |
| 57 | Amazon Transcribe | BB | 73.6 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/amazon-transcribe.min.md |
| 94 | Deepgram Speech-to-Text (Nova-3, Flux) | BB | 70.6 | medium | no | API key | hosted + local | https://www.anchorterminal.com/tools/deepgram-stt.min.md |
| 98 | Google Cloud Speech-to-Text | BB | 70.4 | medium | no | OAuth | hosted | https://www.anchorterminal.com/tools/google-speech-to-text.min.md |
| 108 | Gladia Speech-to-Text API + MCP | B | 69.7 | medium | no | API key | hosted + local | https://www.anchorterminal.com/tools/gladia-stt.min.md |
| 117 | ElevenLabs Scribe Speech to Text API | B | 69 | medium | no | API key | hosted + local | https://www.anchorterminal.com/tools/elevenlabs-scribe.min.md |
| 145 | Speechmatics Speech-to-Text | B | 67.3 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/speechmatics-stt.min.md |
| 148 | AssemblyAI Speech-to-Text (Universal) | B | 67 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/assemblyai-stt.min.md |
| 281 | Soniox Speech-to-Text | C | 58.3 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/soniox-stt.min.md |
| 285 | Rev AI Speech-to-Text API | C | 58 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/rev-ai-stt.min.md |