# Gladia Speech-to-Text API + MCP vs Mistral Voxtral Transcribe

> Gladia Speech-to-Text API + MCP scores 69.5 (B) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 3 of 7 scored categories. Mistral Voxtral Transcribe leads on transparency & trust. Both do speech stt. Category scores, facts, verdicts and agent notes…

- Canonical: https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe
- Markdown: https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe.md (~2,650 tokens)
- Slim: https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Gladia Speech-to-Text API + MCP scores 69.5 (B) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 3 of 7 scored categories. Mistral Voxtral Transcribe leads on transparency & trust. Both do speech stt.

- Gladia Speech-to-Text API + MCP: grade B, 69.5/100, rank #171 of 842. Markdown https://www.anchorterminal.com/tools/gladia-stt.md · JSON https://www.anchorterminal.com/api/v1/tools/gladia-stt.json
- Mistral Voxtral Transcribe: grade B, 64.1/100, rank #329 of 842. Markdown https://www.anchorterminal.com/tools/mistral-voxtral-transcribe.md · JSON https://www.anchorterminal.com/api/v1/tools/mistral-voxtral-transcribe.json

## Which one, for what

### Gladia Speech-to-Text API + MCP (B)

Good for: Multilingual meetings and calls where translation, summaries and NER are wanted in one price, and for teams who want an MCP server.

Ahead on:
- Reliability, 60 against 53
- Schema & documentation, 95 against 85
- Maintenance & community, 80 against 66

Also in its favour:
- Runs on your own machine
- Free to start without a card
- No incidents deducted, where Mistral Voxtral Transcribe loses 3 points for them

Watch for: Starter costs $0.61 an hour async and $0.75 real time, several times the cheapest rivals

### Mistral Voxtral Transcribe (B)

Good for: Suited to low-cost batch transcription with diarisation in the 13 supported languages, and to live captions or voice agents that can run without speaker labels.

Ahead on:
- Transparency & trust, 82 against 64

Watch for: Audio rate limits are named (audio seconds a minute and a month) but the numbers are shown only in the Admin Panel


## Score by category

| Category | Weight | Gladia Speech-to-Text API + MCP | Mistral Voxtral Transcribe | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 53 | Gladia Speech-to-Text API + MCP +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 95 | 85 | Gladia Speech-to-Text API + MCP +10 |
| Agent ergonomics | 13% (16.2 this run) | 75 | 77 | Mistral Voxtral Transcribe +2 |
| Security & auth | 14% (17.5 this run) | 70 | 70 | even |
| Payments & pricing | 10% (12.5 this run) | 40 | 40 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 80 | 66 | Gladia Speech-to-Text API + MCP +14 |
| Transparency & trust | 7% (8.8 this run) | 64 | 82 | Mistral Voxtral Transcribe +18 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **69.5 · B** | **64.1 · B** | |

## Facts side by side

| Fact | Gladia Speech-to-Text API + MCP | Mistral Voxtral Transcribe |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Gladia | Mistral AI |
| Hosted endpoint | `https://api.gladia.io/v2` | `https://api.mistral.ai/v1` |
| Transports | HTTP, stdio | HTTP, websocket |
| Auth | API key | API key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT (SDKs and MCP server) | Proprietary hosted service under Mistral's commercial terms. Voxtral Mini 4B Realtime weights and the SDKs are Apache-2.0 |
| Tools exposed | 8 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-09-24 | 2026-02-04 |
| Terms last updated | no date given | 2026-09-25 |
| Privacy policy last updated | no date given | 2026-09-03 |
| Customer content may train models | not found in the text | yes, with an opt-out |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 4 stars, 4.8k npm/wk, 126k PyPI/wk | 773 stars |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**Gladia Speech-to-Text API + MCP.** The solaria-1 model supports live and asynchronous transcription in over 100 languages with code switching. Starter pricing is $0.61 an hour for asynchronous transcription and $0.75 for real-time audio.

**Mistral Voxtral Transcribe.** Batch transcription costs $0.003 a minute and takes one multipart call with a file, a URL or an uploaded file ID. Rate limit numbers are shown only in the console, and timestamps cannot be combined with a set language, nor diarisation with the realtime model.

## Before you call either

### Gladia Speech-to-Text API + MCP

1. Don't resubmit a pre-recorded job after a 200 or a `transcription.created` webhook. It's already queued
2. Pick `solaria-3` only for async EN, FR, DE, ES or IT audio. Anything live or multilingual needs `solaria-1`
3. A 429 means the concurrency limit, 3 async and 1 live on the free plan. Wait for a running job to finish
4. Upgrade off the free plan before sending sensitive audio
5. Split files over 135 minutes or 1,000 MB

### Mistral Voxtral Transcribe

1. Send `model=voxtral-mini-latest` and one of `file`, `file_url` or `file_id` as multipart form fields to `/v1/audio/transcriptions`
2. Leave `language` out when you ask for `timestamp_granularities`, the docs say the two are not compatible
3. Use the batch endpoint for diarisation. `voxtral-mini-transcribe-realtime-2602` does not accept `diarize`
4. Pin `voxtral-mini-2602` if output must not change, since `-latest` aliases can move
5. Mint browser tokens with `POST /v1/client/sessions` close to connection time and pass them in `Sec-WebSocket-Protocol`, never the API key

## Questions

### Which is better for AI agents, Gladia Speech-to-Text API + MCP or Mistral Voxtral Transcribe?

Gladia Speech-to-Text API + MCP scores 69.5 (B) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 3 of 7 scored categories. Mistral Voxtral Transcribe leads on transparency & trust.

### Do Gladia Speech-to-Text API + MCP and Mistral Voxtral Transcribe need an API key?

Both need an API key.

### Can an agent call Gladia Speech-to-Text API + MCP and Mistral Voxtral Transcribe without installing anything?

Yes. Gladia Speech-to-Text API + MCP has a hosted endpoint at https://api.gladia.io/v2 and Mistral Voxtral Transcribe at https://api.mistral.ai/v1.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe.json, and with the fewest tokens: https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "gladia-stt", "b": "mistral-voxtral-transcribe"}`. From a terminal: `anchor compare gladia-stt mistral-voxtral-transcribe`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/gladia-stt.json and https://www.anchorterminal.com/api/v1/tools/mistral-voxtral-transcribe.json

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