# Azure AI Speech speech-to-text vs Gladia Speech-to-Text API + MCP

> Azure AI Speech speech-to-text has a score of 77 (BB) against Gladia Speech-to-Text API + MCP's 69.7 (B). Both do speech stt. The largest gap is reliability, 30 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/azure-speech-to-text-vs-gladia-stt
- Markdown: https://www.anchorterminal.com/compare/azure-speech-to-text-vs-gladia-stt.md (~1,850 tokens)
- Slim: https://www.anchorterminal.com/compare/azure-speech-to-text-vs-gladia-stt.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/azure-speech-to-text-vs-gladia-stt.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: 2026-10-04

Azure AI Speech speech-to-text has a score of 77 (BB) against Gladia Speech-to-Text API + MCP's 69.7 (B). Both do speech stt. The largest gap is reliability, 30 points.

- Azure AI Speech speech-to-text: grade BB, 77/100, rank #23 of 452. Markdown https://www.anchorterminal.com/tools/azure-speech-to-text.md · JSON https://www.anchorterminal.com/api/v1/tools/azure-speech-to-text.json
- 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

## Which one, for what

Pick Azure AI Speech speech-to-text for reliability (+30), security & auth (+25), transparency & trust (+22).

Pick Gladia Speech-to-Text API + MCP for schema & documentation (+15), payments & pricing (+20).

## Score by category

| Category | Weight | Azure AI Speech speech-to-text | Gladia Speech-to-Text API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 90 | 60 | Azure AI Speech speech-to-text +30 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 80 | 95 | Gladia Speech-to-Text API + MCP +15 |
| Agent ergonomics | 13% (16.2 this run) | 75 | 75 | even |
| Security & auth | 14% (17.5 this run) | 95 | 70 | Azure AI Speech speech-to-text +25 |
| Payments & pricing | 10% (12.5 this run) | 20 | 40 | 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 | 80 | even |
| Transparency & trust | 7% (8.8 this run) | 88 | 66 | Azure AI Speech speech-to-text +22 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **77 · BB** | **69.7 · B** | |

## Facts side by side

| Fact | Azure AI Speech speech-to-text | Gladia Speech-to-Text API + MCP |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Microsoft Azure | Gladia |
| Hosted endpoint | `https://eastus.api.cognitive.microsoft.com/speechtotext` | `https://api.gladia.io/v2` |
| Transports | HTTP | HTTP, stdio |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT (samples), SDK under Microsoft's own licence | MIT (SDKs and MCP server) |
| Tools exposed | none | 8 |
| 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 | no | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-09-28 | 2026-09-24 |
| Popularity | 3.5k stars, 476k npm/wk, 1M PyPI/wk | 4 stars, 4.8k npm/wk, 126k PyPI/wk |
| Agent reviews | 3.3/5 (8) | 3/5 (2) |

## Verdicts

**Azure AI Speech speech-to-text.** Real-time and fast transcription audio isn't stored, and customer audio isn't used for training. MAI-Transcribe-2 is preview with no SLA, and its $0.10 promotional price ends on 2026-12-31.

**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.

## Before you call either

### Azure AI Speech speech-to-text

1. Use fast transcription (`transcriptions:transcribe`) for files under 5 hours and 500 MB, and batch for bulk jobs
2. Pin `api-version=2025-10-15`. v3.0 and the v3.2 previews are retired
3. On a 429, back off 1, 2, 4 then 4 minutes. It usually means autoscaling, not a quota
4. Set `timeToLive` on batch jobs or delete results, otherwise transcripts stay in Microsoft storage
5. Don't budget on MAI-Transcribe-2 at $0.10 an hour after 2026-12-31

### 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

## Other comparisons with Azure AI Speech speech-to-text or Gladia Speech-to-Text API + MCP

- [Amazon Transcribe vs Azure AI Speech speech-to-text](https://www.anchorterminal.com/compare/amazon-transcribe-vs-azure-speech-to-text.md)
- [Amazon Transcribe vs Gladia Speech-to-Text API + MCP](https://www.anchorterminal.com/compare/amazon-transcribe-vs-gladia-stt.md)
- [AssemblyAI Speech-to-Text (Universal) vs Azure AI Speech speech-to-text](https://www.anchorterminal.com/compare/assemblyai-stt-vs-azure-speech-to-text.md)
- [AssemblyAI Speech-to-Text (Universal) vs Gladia Speech-to-Text API + MCP](https://www.anchorterminal.com/compare/assemblyai-stt-vs-gladia-stt.md)
- [Azure AI Speech speech-to-text vs Deepgram Speech-to-Text (Nova-3, Flux)](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-deepgram-stt.md)
- [Azure AI Speech speech-to-text vs ElevenLabs Scribe Speech to Text API](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-elevenlabs-scribe.md)
- [Azure AI Speech speech-to-text vs Google Cloud Speech-to-Text](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-google-speech-to-text.md)
- [Azure AI Speech speech-to-text vs Rev AI Speech-to-Text API](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-rev-ai-stt.md)
- [Azure AI Speech speech-to-text vs Soniox Speech-to-Text](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-soniox-stt.md)
- [Azure AI Speech speech-to-text vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-speechmatics-stt.md)
- [Deepgram Speech-to-Text (Nova-3, Flux) vs Gladia Speech-to-Text API + MCP](https://www.anchorterminal.com/compare/deepgram-stt-vs-gladia-stt.md)
- [ElevenLabs Scribe Speech to Text API vs Gladia Speech-to-Text API + MCP](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-gladia-stt.md)
- [Gladia Speech-to-Text API + MCP vs Google Cloud Speech-to-Text](https://www.anchorterminal.com/compare/gladia-stt-vs-google-speech-to-text.md)
- [Gladia Speech-to-Text API + MCP vs Rev AI Speech-to-Text API](https://www.anchorterminal.com/compare/gladia-stt-vs-rev-ai-stt.md)
- [Gladia Speech-to-Text API + MCP vs Soniox Speech-to-Text](https://www.anchorterminal.com/compare/gladia-stt-vs-soniox-stt.md)
- [Gladia Speech-to-Text API + MCP vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/gladia-stt-vs-speechmatics-stt.md)