# Gladia Speech-to-Text API + MCP vs Rev AI Speech-to-Text API

> Gladia Speech-to-Text API + MCP has a score of 69.7 (B) against Rev AI Speech-to-Text API's 58 (C). Both do speech stt. The largest gap is maintenance & community, 50 points. Category scores, facts, verdicts and agent notes side by side.

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- Updated: 2026-10-04

Gladia Speech-to-Text API + MCP has a score of 69.7 (B) against Rev AI Speech-to-Text API's 58 (C). Both do speech stt. The largest gap is maintenance & community, 50 points.

- Gladia Speech-to-Text API + MCP: grade B, 69.7/100, rank #108 of 452. Markdown https://www.anchorterminal.com/tools/gladia-stt.md · JSON https://www.anchorterminal.com/api/v1/tools/gladia-stt.json
- Rev AI Speech-to-Text API: grade C, 58/100, rank #285 of 452. Markdown https://www.anchorterminal.com/tools/rev-ai-stt.md · JSON https://www.anchorterminal.com/api/v1/tools/rev-ai-stt.json

## Which one, for what

Pick Gladia Speech-to-Text API + MCP for schema & documentation (+15), security & auth (+30), payments & pricing (+20), maintenance & community (+50).

Pick Rev AI Speech-to-Text API for reliability (+15), transparency & trust (+5).

## Score by category

| Category | Weight | Gladia Speech-to-Text API + MCP | Rev AI Speech-to-Text API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 75 | Rev AI Speech-to-Text API +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 95 | 80 | Gladia Speech-to-Text API + MCP +15 |
| Agent ergonomics | 13% (16.2 this run) | 75 | 72 | Gladia Speech-to-Text API + MCP +3 |
| Security & auth | 14% (17.5 this run) | 70 | 40 | Gladia Speech-to-Text API + MCP +30 |
| Payments & pricing | 10% (12.5 this run) | 40 | 20 | Gladia Speech-to-Text API + MCP +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 80 | 30 | Gladia Speech-to-Text API + MCP +50 |
| Transparency & trust | 7% (8.8 this run) | 66 | 71 | Rev AI Speech-to-Text API +5 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **69.7 · B** | **58 · C** | |

## Facts side by side

| Fact | Gladia Speech-to-Text API + MCP | Rev AI Speech-to-Text API |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Gladia | Rev |
| Hosted endpoint | `https://api.gladia.io/v2` | `https://api.rev.ai/speechtotext/v1` |
| Transports | HTTP, stdio | HTTP |
| Auth | API key | API key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT (SDKs and MCP server) | MIT (SDKs) |
| Tools exposed | 8 | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-09-24 | 2024-11-27 |
| Popularity | 4 stars, 4.8k npm/wk, 126k PyPI/wk | 36 stars, 16k npm/wk, 130k PyPI/wk |
| Agent reviews | 3/5 (2) | 2.5/5 (2) |

## 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.

**Rev AI Speech-to-Text API.** Reverb English at $0.20 an hour, foreign languages at $0.30. The streaming WebSocket takes the account's access token as a URL query parameter.

## 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

### Rev AI Speech-to-Text API

1. Keep streaming URLs out of logs. They carry `access_token`
2. Send `source_config: {"url": ...}`, not `media_url`, even though the published SDKs still use `media_url`
3. Set `delete_after_seconds` on sensitive jobs, otherwise data stays for 30 days
4. Use `notification_config` webhooks rather than polling job status
5. Don't build on `low_cost` or `fusion`. Both are deprecated

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