{ "data": { "a": { "slug": "azure-speech-to-text", "name": "Azure AI Speech speech-to-text", "vendor": "Microsoft Azure", "vendorUrl": "https://azure.microsoft.com/en-us/products/ai-services/speech-to-text", "kind": "model", "category": "speech-to-text", "summary": "Azure's speech-to-text service for transcribing audio.", "url": "https://www.anchorterminal.com/tools/azure-speech-to-text", "markdownUrl": "https://www.anchorterminal.com/tools/azure-speech-to-text.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/azure-speech-to-text.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/azure-speech-to-text.json", "repo": "https://github.com/Azure-Samples/cognitive-services-speech-sdk", "license": "MIT (samples), SDK under Microsoft's own licence", "transports": [ "http" ], "remoteUrl": "https://eastus.api.cognitive.microsoft.com/speechtotext", "packages": [ { "registry": "pypi", "name": "azure-cognitiveservices-speech" }, { "registry": "npm", "name": "microsoft-cognitiveservices-speech-sdk" } ], "auth": "mixed", "authNotes": "`Ocp-Apim-Subscription-Key` header with a Speech resource key, or a Microsoft Entra ID bearer token (Microsoft's recommended keyless option). Endpoints are per region or per resource. The MAI-Transcribe-2-Streaming Realtime WebSocket also takes the key as an `api-key` header or query-string parameter.", "pricing": "freemium", "pricingNotes": "Free F0 tier with 5 audio hours a month of real-time. Pay as you go in East US is $1 an hour real-time, $0.36 fast transcription, $0.18 batch, $1.20 custom real-time. Diarisation and continuous language ID in real time add $0.30 an hour each. MAI-Transcribe-2 is $0.10 an hour until 2026-12-31. MAI-Transcribe-2-Streaming is $0.54 an hour until the end of 2026 per Microsoft AI's launch post (https://microsoft.ai/news/our-first-streaming-transcription-model/), with no Azure meter found on 2026-10-05. Commitment tiers from $1,600 a month for 2,000 hours (https://azure.microsoft.com/en-us/pricing/details/speech/).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No machine payment. Billing runs through a cloud account with a card or invoice.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 3450, "npmWeekly": 475621, "pypiWeekly": 1032532, "asOf": "2026-09-30" }, "docsUrl": "https://learn.microsoft.com/en-us/azure/ai-services/speech-service/speech-to-text", "capabilities": [ "speech.stt", "speech.streaming", "speech.batch", "speech.diarisation", "speech.languages", "speech.translation" ], "tags": [ "hosted", "freemium", "free-tier", "closed-source", "python", "typescript", "enterprise", "streaming", "batch", "async-jobs", "webhooks" ], "lastRelease": "2026-09-28", "graded": true, "anchor": { "graded": true, "score": 73, "grade": "BB", "agentReady": true, "rank": 90, "ranked": true, "rankOf": 842, "categoryRank": 2, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 75, "maintenance": 80, "payments": 20, "reliability": 80, "schema": 80, "security": 85, "transparency": 85 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-05" }, "negative": 0, "verdict": "Real-time and fast transcription audio isn't stored, and customer audio isn't used for training. MAI-Transcribe-2 and the new MAI-Transcribe-2-Streaming are preview with no SLA, and the streaming model's WebSocket route accepts the resource key in the URL query string.", "bestFor": "Teams on Azure who need several modes (real time, synchronous files, cheap batch, custom models) under one resource, or strict default data handling.", "strengths": [ "Real-time and fast transcription audio isn't stored, and customer audio isn't used for training", "Fast transcription returns files up to 5 hours and 500 MB in one synchronous call", "Batch at $0.18 an hour, and a free F0 tier with 5 real-time hours a month", "429 guidance with a concrete backoff pattern of 1, 2, 4 and 4 minutes", "Keys or Entra ID tokens with role-based access" ], "weaknesses": [ "MAI-Transcribe-2 and MAI-Transcribe-2-Streaming are preview with no SLA, and both introductory prices end with 2026", "The MAI-Transcribe-2-Streaming WebSocket docs allow the resource key as an `api-key` query parameter", "REST API v3.0 and the v3.2 previews were retired on 2026-03-31, and older samples still target them", "No llms.txt, and the pricing page needs JavaScript", "An Azure subscription needs a card, even for the F0 tier" ], "agentNotes": [ "Use fast transcription (`transcriptions:transcribe`) for files under 5 hours and 500 MB, and batch for bulk jobs with `timeToLive` set", "Pin `api-version=2025-10-15`. v3.0 and the v3.2 previews are retired", "On a 429, back off 1, 2, 4 then 4 minutes. It usually means autoscaling, not a quota", "For MAI-Transcribe-2-Streaming, use Speech SDK 1.52 with the `/speech/universal/v2` endpoint, or send the key in the `api-key` header, never the query string", "Don't budget on MAI-Transcribe-2 at $0.10 or MAI-Transcribe-2-Streaming at $0.54 an hour after 2026-12-31" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 8, "avgRating": 3.3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 73 } ], "editorialScores": { "ergonomics": 75, "maintenance": 80, "payments": 20, "reliability": 80, "schema": 80, "security": 85, "transparency": 80 }, "provenanceScore": 90 }, "connect": { "install": "pip install azure-cognitiveservices-speech # or: npm i microsoft-cognitiveservices-speech-sdk", "http": "curl -X POST \"https://$AZURE_SPEECH_RESOURCE.cognitiveservices.azure.com/speechtotext/transcriptions:transcribe?api-version=2025-10-15\" \\\n -H \"Ocp-Apim-Subscription-Key: $AZURE_SPEECH_KEY\" \\\n -F \"audio=@call.wav\" -F 'definition={\"locales\":[\"en-US\"]}'" }, "letme": { "capability": "https://letme.dev/speech.stt", "tool": "https://letme.dev/azure-speech-to-text" }, "sameCompany": [ "azure-foundry-fine-tuning", "azure-ai-content-safety", "azure-text-to-speech", "microsoft-agent-framework", "microsoft-execution-containers", "microsoft-entra-agent-id", "azure-key-vault", "azure-document-intelligence", "azure-devops-mcp", "microsoft-learn-mcp", "playwright-mcp", "azure-mcp", "azure-maps", "azure-translator", "microsoft-graph-calendar", "azure-blob-storage", "onedrive-sharepoint", "microsoft-teams", "dynamics-365-sales", "power-automate", "foundry-local", "microsoft-advertising-api", "microsoft-excel-graph", "outlook-mail-graph" ], "area": "voice", "unitPrices": [ { "item": "Real-time standard", "unit": "audio-minute", "usd": 0.0167, "note": "$1 an hour, East US" }, { "item": "Fast transcription", "unit": "audio-minute", "usd": 0.006, "note": "$0.36 an hour" }, { "item": "Batch standard", "unit": "audio-minute", "usd": 0.003, "note": "$0.18 an hour" }, { "item": "MAI-Transcribe-2 (preview)", "unit": "audio-minute", "usd": 0.00167, "note": "$0.10 an hour, promotional until 2026-12-31" }, { "item": "MAI-Transcribe-2-Streaming (preview)", "unit": "audio-minute", "usd": 0.009, "note": "$0.54 an hour, introductory until the end of 2026, per Microsoft AI's launch post. No Azure meter found" }, { "item": "Custom real-time", "unit": "audio-minute", "usd": 0.02, "note": "$1.20 an hour, plus endpoint hosting" }, { "item": "Real-time add-on (diarisation or language ID)", "unit": "audio-minute", "usd": 0.005, "note": "$0.30 an hour per feature" } ], "provenance": { "legalEntity": "Microsoft Corporation", "domain": "microsoft.com", "domainRegistered": "1991-05-02", "domainNote": "Endpoints are on speech.microsoft.com, api.cognitive.microsoft.com and cognitiveservices.azure.com. microsoft.com publishes a security.txt, but it passed its Expires date on 2026-09-23.", "endpointOnVendorDomain": true, "terms": "https://www.microsoft.com/licensing/terms/", "privacy": "https://privacy.microsoft.com/en-us/privacystatement", "statusPage": "https://azure.status.microsoft/en-us/status", "changelog": "https://learn.microsoft.com/en-us/azure/ai-services/speech-service/releasenotes", "securityTxt": "expired", "checked": "2026-09-30", "score": 90 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/azure-speech-to-text.json", "live": { "slug": "azure-speech-to-text", "probe": { "target": "https://eastus.api.cognitive.microsoft.com/speechtotext", "method": "get", "lastAt": "2026-10-09T11:00:16.987555569Z", "lastOk": true, "lastStatus": 404, "lastMs": 349, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 333, "p95ms24h": 370, "samples24h": 260, "samples30d": 2303, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 117, "ok": 117 } ] }, "vendorStatus": { "page": "https://azure.status.microsoft/en-us/status", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T10:02:53.355601307Z" }, "versions": [ { "registry": "github", "name": "Azure-Samples/cognitive-services-speech-sdk", "version": "ingestion-v2.1.13", "released": "2026-07-10", "seenAt": "2026-10-08T16:01:15.116174819Z" }, { "registry": "npm", "name": "microsoft-cognitiveservices-speech-sdk", "version": "1.52.0", "seenAt": "2026-10-08T16:01:12.638735717Z" }, { "registry": "pypi", "name": "azure-cognitiveservices-speech", "version": "1.52.0", "released": "2026-09-28", "seenAt": "2026-10-08T16:01:08.5863046Z" } ], "githubStars": 3450, "npmWeekly": 515908, "pypiWeekly": 545092, "securityTxt": { "url": "https://microsoft.com/.well-known/security.txt", "state": "expired", "expires": "2026-09-23T16:00:00.000Z", "checkedAt": "2026-10-08T15:39:08.216544687Z" }, "domain": { "domain": "microsoft.com", "registered": "1991-05-02", "source": "https://rdap.verisign.com/com/v1/domain/microsoft.com", "checkedAt": "2026-10-04T13:04:13.488857536Z" }, "pages": [ { "url": "https://learn.microsoft.com/en-us/azure/ai-services/speech-service/releasenotes", "kind": "changelog", "status": 304, "checkedAt": "2026-10-08T18:21:28.166264424Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "2950544cc00c" }, { "url": "https://learn.microsoft.com/en-us/azure/ai-services/speech-service/mai-transcribe", "kind": "deprecations", "status": 304, "checkedAt": "2026-10-08T18:21:26.287409907Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "ebf9086dffd9" }, { "url": "https://learn.microsoft.com/en-us/azure/ai-services/speech-service/rest-speech-to-text", "kind": "deprecations", "status": 304, "checkedAt": "2026-10-08T18:21:30.093491061Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "fd2ed8814ecb" }, { "url": "https://azure.microsoft.com/en-us/pricing/details/speech/", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:15:31.696540365Z", "changedAt": "2026-10-07T18:02:47.446412299Z", "fingerprint": "425d06bee416" }, { "url": "https://privacy.microsoft.com/en-us/privacystatement", "kind": "privacy", "status": 200, "checkedAt": "2026-10-01T13:14:57.860748137Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "07484a06f35c" }, { "url": "https://www.microsoft.com/licensing/terms/", "kind": "terms", "status": 502, "checkedAt": "2026-10-01T13:17:52.720054167Z", "changedAt": "0001-01-01T00:00:00Z" } ], "updatedAt": "2026-10-09T11:00:16.987555569Z" } }, "answer": "Azure AI Speech speech-to-text scores 73 (BB) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 4 of 7 scored categories. Mistral Voxtral Transcribe leads on schema \u0026 documentation and payments \u0026 pricing.", "b": { "slug": "mistral-voxtral-transcribe", "name": "Mistral Voxtral Transcribe", "vendor": "Mistral AI", "vendorUrl": "https://mistral.ai", "kind": "model", "category": "speech-to-text", "summary": "Mistral AI's speech-to-text API. Voxtral Mini Transcribe 2 transcribes files of up to about three hours with diarisation, word timestamps and context biasing, and Voxtral Realtime transcribes live audio over a WebSocket.", "url": "https://www.anchorterminal.com/tools/mistral-voxtral-transcribe", "markdownUrl": "https://www.anchorterminal.com/tools/mistral-voxtral-transcribe.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/mistral-voxtral-transcribe.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/mistral-voxtral-transcribe.json", "repo": "https://github.com/mistralai/client-python", "license": "Proprietary hosted service under Mistral's commercial terms. Voxtral Mini 4B Realtime weights and the SDKs are Apache-2.0", "transports": [ "http", "websocket" ], "remoteUrl": "https://api.mistral.ai/v1", "packages": [ { "registry": "pypi", "name": "mistralai" }, { "registry": "npm", "name": "@mistralai/mistralai" } ], "auth": "api-key", "authNotes": "Self-serve bearer key from Studio, bound to one workspace, with an optional expiry date. Browser realtime clients use `rt_` tokens minted at `POST /v1/client/sessions`, valid about 900 seconds for one model (https://docs.mistral.ai/studio/audio/speech_to_text/realtime_transcription/client_auth).", "pricing": "freemium", "pricingNotes": "$0.003 per audio minute for Voxtral Mini Transcribe 2 and $0.006 for Voxtral Mini Transcribe Realtime (model cards on docs.mistral.ai, https://mistral.ai/pricing/api/). Free mode gives API access with no card, within console limits, so an agent's owner can start without a contract.", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, the OpenAPI document or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 773, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://docs.mistral.ai/studio/audio/speech_to_text", "llmsTxt": "https://docs.mistral.ai/llms.txt", "openapi": "https://docs.mistral.ai/openapi.yaml", "capabilities": [ "speech.stt", "speech.batch", "speech.streaming", "speech.diarisation", "speech.languages" ], "tags": [ "official", "hosted", "model", "eu", "free-tier", "openapi", "llms-txt", "python", "typescript", "streaming", "batch", "open-weights" ], "lastRelease": "2026-02-04", "graded": true, "anchor": { "graded": true, "score": 64.1, "grade": "B", "agentReady": false, "rank": 329, "ranked": true, "rankOf": 842, "categoryRank": 10, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 77, "maintenance": 66, "payments": 40, "reliability": 53, "schema": 85, "security": 70, "transparency": 82 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": -3, "negativeNotes": [ "2026-05-12. Compromised `mistralai` 2.4.6 on PyPI ran a credential-harvesting script on import for about three hours, and three `@mistralai/mistralai` versions on npm were also replaced. Mistral published advisory MAI-2026-002, removed the packages and closed its investigation on 14 May. Fixed and documented, so 3 points. https://docs.mistral.ai/resources/security-advisories/MAI-2026-002" ], "verdict": "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.", "bestFor": "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.", "strengths": [ "Published prices of $0.003 a minute for Voxtral Mini Transcribe 2 and $0.006 a minute for Voxtral Realtime", "One request with `model` and a `file`, `file_url` or `file_id`, for audio of up to about three hours", "Browser clients use `rt_` tokens that last about 900 seconds and are limited to one model", "`/v1/audio/transcriptions` is on the zero data retention list for paid plans, and the Realtime weights are Apache-2.0 on Hugging Face", "OpenAPI document, llms.txt and Markdown guides, with a six-month retirement notice for GA models" ], "weaknesses": [ "Audio rate limits are named (audio seconds a minute and a month) but the numbers are shown only in the Admin Panel", "`timestamp_granularities` cannot be used with `language`, and the realtime model cannot diarise", "13 languages, and context biasing is tuned for English with other languages described as experimental", "The compromised `mistralai` 2.4.6 on PyPI harvested credentials on import for three hours on 12 May 2026", "No SLA found, and status.mistral.ai answered our requests with a bot check on 8 October 2026", "The Studio MCP server has no transcription tool" ], "agentNotes": [ "Send `model=voxtral-mini-latest` and one of `file`, `file_url` or `file_id` as multipart form fields to `/v1/audio/transcriptions`", "Leave `language` out when you ask for `timestamp_granularities`, the docs say the two are not compatible", "Use the batch endpoint for diarisation. `voxtral-mini-transcribe-realtime-2602` does not accept `diarize`", "Pin `voxtral-mini-2602` if output must not change, since `-latest` aliases can move", "Mint browser tokens with `POST /v1/client/sessions` close to connection time and pass them in `Sec-WebSocket-Protocol`, never the API key" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 64.1 } ], "editorialScores": { "ergonomics": 77, "maintenance": 66, "payments": 40, "reliability": 53, "schema": 85, "security": 70, "transparency": 73 }, "provenanceScore": 91 }, "connect": { "install": "pip install mistralai # realtime: pip install \"mistralai[realtime]\" # or: npm i @mistralai/mistralai", "http": "curl --location 'https://api.mistral.ai/v1/audio/transcriptions' \\\n --header \"x-api-key: $MISTRAL_API_KEY\" \\\n --form 'file_url=\"https://docs.mistral.ai/audio/obama.mp3\"' \\\n --form 'model=\"voxtral-mini-latest\"'" }, "letme": { "capability": "https://letme.dev/speech.stt", "tool": "https://letme.dev/mistral-voxtral-transcribe" }, "sameCompany": [ "mistral-api", "mistral-embeddings", "mistral-moderation", "mistral-ocr" ], "area": "voice", "unitPrices": [ { "item": "Voxtral Mini Transcribe 2 (batch)", "unit": "audio-minute", "usd": 0.003 }, { "item": "Voxtral Mini Transcribe Realtime", "unit": "audio-minute", "usd": 0.006 } ], "provenance": { "legalEntity": "Mistral AI (RCS Paris 952 418 325)", "domain": "mistral.ai", "domainRegistered": "2019-05-15", "endpointOnVendorDomain": true, "terms": "https://legal.mistral.ai/terms/commercial-terms-of-service", "privacy": "https://legal.mistral.ai/terms/privacy-policy", "statusPage": "https://status.mistral.ai", "changelog": "https://docs.mistral.ai/resources/changelogs", "securityTxt": "valid", "checked": "2026-10-08", "score": 91 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/mistral-voxtral-transcribe.json", "live": { "slug": "mistral-voxtral-transcribe", "probe": { "target": "https://api.mistral.ai/v1", "method": "get", "lastAt": "2026-10-09T11:00:30.276888458Z", "lastOk": true, "lastStatus": 404, "lastMs": 57, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 48, "p95ms24h": 78, "samples24h": 36, "samples30d": 36, "days": [ { "date": "2026-10-09", "probes": 36, "ok": 36 } ] }, "updatedAt": "2026-10-09T11:00:30.276888458Z" } }, "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "Microsoft Azure", "b": "Mistral AI", "name": "Vendor" }, { "a": "https://eastus.api.cognitive.microsoft.com/speechtotext", "b": "https://api.mistral.ai/v1", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP, websocket", "name": "Transports" }, { "a": "OAuth or key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT (samples), SDK under Microsoft's own licence", "b": "Proprietary hosted service under Mistral's commercial terms. Voxtral Mini 4B Realtime weights and the SDKs are Apache-2.0", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-28", "b": "2026-02-04", "name": "Last release" }, { "a": "couldn't be read", "b": "2026-09-25", "name": "Terms last updated" }, { "a": "2026-09-01", "b": "2026-09-03", "name": "Privacy policy last updated" }, { "a": "yes", "b": "yes, with an opt-out", "name": "Customer content may train models" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "couldn't be read", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "couldn't be read", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "3.5k stars, 476k npm/wk, 1M PyPI/wk", "b": "773 stars", "name": "Popularity" }, { "a": "3.3/5 (8)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Azure AI Speech speech-to-text scores 73 (BB) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 4 of 7 scored categories. Mistral Voxtral Transcribe leads on schema \u0026 documentation and payments \u0026 pricing.", "question": "Which is better for AI agents, Azure AI Speech speech-to-text or Mistral Voxtral Transcribe?" }, { "answer": "Azure AI Speech speech-to-text takes an API key or an OAuth sign-in. Mistral Voxtral Transcribe needs an API key.", "question": "Do Azure AI Speech speech-to-text and Mistral Voxtral Transcribe need an API key?" }, { "answer": "Yes. Azure AI Speech speech-to-text has a hosted endpoint at https://eastus.api.cognitive.microsoft.com/speechtotext and Mistral Voxtral Transcribe at https://api.mistral.ai/v1.", "question": "Can an agent call Azure AI Speech speech-to-text and Mistral Voxtral Transcribe without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 80 against 53", "Security \u0026 auth, 85 against 70", "Maintenance \u0026 community, 80 against 66" ], "also": [ "Agent-ready, a grade of BB or better", "No incidents deducted, where Mistral Voxtral Transcribe loses 3 points for them" ], "goodFor": "Teams on Azure who need several modes (real time, synchronous files, cheap batch, custom models) under one resource, or strict default data handling.", "slug": "azure-speech-to-text", "watchFor": "MAI-Transcribe-2 and MAI-Transcribe-2-Streaming are preview with no SLA, and both introductory prices end with 2026" }, { "aheadOn": [ "Schema \u0026 documentation, 85 against 80", "Payments \u0026 pricing, 40 against 20" ], "also": null, "goodFor": "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.", "slug": "mistral-voxtral-transcribe", "watchFor": "Audio rate limits are named (audio seconds a minute and a month) but the numbers are shown only in the Admin Panel" } ], "job": { "capability": "speech.stt", "name": "Speech stt" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-azure-speech-to-text.json", "title": "Amazon Transcribe vs Azure AI Speech speech-to-text", "url": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-azure-speech-to-text" }, { "json": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-mistral-voxtral-transcribe.json", "title": "Amazon Transcribe vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/assemblyai-stt-vs-azure-speech-to-text.json", "title": "AssemblyAI Speech-to-Text (Universal) vs Azure AI Speech speech-to-text", "url": "https://www.anchorterminal.com/compare/assemblyai-stt-vs-azure-speech-to-text" }, { "json": "https://www.anchorterminal.com/compare/assemblyai-stt-vs-mistral-voxtral-transcribe.json", "title": "AssemblyAI Speech-to-Text (Universal) vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/assemblyai-stt-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-deepgram-stt.json", "title": "Azure AI Speech speech-to-text vs Deepgram Speech-to-Text (Nova-3, Flux)", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-deepgram-stt" }, { "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-elevenlabs-scribe.json", "title": "Azure AI Speech speech-to-text vs ElevenLabs Scribe Speech to Text API", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-elevenlabs-scribe" }, { "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-gladia-stt.json", "title": "Azure AI Speech speech-to-text vs Gladia Speech-to-Text API + MCP", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-gladia-stt" }, { "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-google-speech-to-text.json", "title": "Azure AI Speech speech-to-text vs Google Cloud Speech-to-Text", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-google-speech-to-text" }, { "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-groq-speech-to-text.json", "title": "Azure AI Speech speech-to-text vs Groq Speech-to-Text", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-groq-speech-to-text" }, { "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-rev-ai-stt.json", "title": "Azure AI Speech speech-to-text vs Rev AI Speech-to-Text API", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-rev-ai-stt" }, { "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-soniox-stt.json", "title": "Azure AI Speech speech-to-text vs Soniox Speech-to-Text", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-soniox-stt" }, { "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-speechmatics-stt.json", "title": "Azure AI Speech speech-to-text vs Speechmatics Speech-to-Text", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-speechmatics-stt" }, { "json": "https://www.anchorterminal.com/compare/deepgram-stt-vs-mistral-voxtral-transcribe.json", "title": "Deepgram Speech-to-Text (Nova-3, Flux) vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/deepgram-stt-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-mistral-voxtral-transcribe.json", "title": "ElevenLabs Scribe Speech to Text API vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe.json", "title": "Gladia Speech-to-Text API + MCP vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/google-speech-to-text-vs-mistral-voxtral-transcribe.json", "title": "Google Cloud Speech-to-Text vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/google-speech-to-text-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/groq-speech-to-text-vs-mistral-voxtral-transcribe.json", "title": "Groq Speech-to-Text vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/groq-speech-to-text-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-rev-ai-stt.json", "title": "Mistral Voxtral Transcribe vs Rev AI Speech-to-Text API", "url": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-rev-ai-stt" }, { "json": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-soniox-stt.json", "title": "Mistral Voxtral Transcribe vs Soniox Speech-to-Text", "url": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-soniox-stt" }, { "json": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-speechmatics-stt.json", "title": "Mistral Voxtral Transcribe vs Speechmatics Speech-to-Text", "url": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-speechmatics-stt" } ], "scores": [ { "azure-speech-to-text": 80, "by": 27, "edge": "azure-speech-to-text", "key": "reliability", "mistral-voxtral-transcribe": 53, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "azure-speech-to-text": 80, "by": 5, "edge": "mistral-voxtral-transcribe", "key": "schema", "mistral-voxtral-transcribe": 85, "name": "Schema \u0026 documentation", "weight": 13 }, { "azure-speech-to-text": 75, "by": 2, "edge": "mistral-voxtral-transcribe", "key": "ergonomics", "mistral-voxtral-transcribe": 77, "name": "Agent ergonomics", "weight": 13 }, { "azure-speech-to-text": 85, "by": 15, "edge": "azure-speech-to-text", "key": "security", "mistral-voxtral-transcribe": 70, "name": "Security \u0026 auth", "weight": 14 }, { "azure-speech-to-text": 20, "by": 20, "edge": "mistral-voxtral-transcribe", "key": "payments", "mistral-voxtral-transcribe": 40, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "azure-speech-to-text": 80, "by": 14, "edge": "azure-speech-to-text", "key": "maintenance", "mistral-voxtral-transcribe": 66, "name": "Maintenance \u0026 community", "weight": 7 }, { "azure-speech-to-text": 85, "by": 3, "edge": "azure-speech-to-text", "key": "transparency", "mistral-voxtral-transcribe": 82, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Azure AI Speech speech-to-text scores 73 (BB) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 4 of 7 scored categories. Mistral Voxtral Transcribe leads on schema \u0026 documentation and payments \u0026 pricing. Both do speech stt.", "verdicts": { "azure-speech-to-text": "Real-time and fast transcription audio isn't stored, and customer audio isn't used for training. MAI-Transcribe-2 and the new MAI-Transcribe-2-Streaming are preview with no SLA, and the streaming model's WebSocket route accepts the resource key in the URL query string.", "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." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe", "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe.md", "slim": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe.min.md" }, "markdown": "Azure AI Speech speech-to-text scores 73 (BB) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 4 of 7 scored categories. Mistral Voxtral Transcribe leads on schema \u0026 documentation and payments \u0026 pricing. Both do speech stt.\n\n- Azure AI Speech speech-to-text: grade BB, 73/100, rank #90 of 842. Markdown https://www.anchorterminal.com/tools/azure-speech-to-text.md · JSON https://www.anchorterminal.com/api/v1/tools/azure-speech-to-text.json\n- 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\n\n## Which one, for what\n\n### Azure AI Speech speech-to-text (BB)\n\nGood for: Teams on Azure who need several modes (real time, synchronous files, cheap batch, custom models) under one resource, or strict default data handling.\n\nAhead on:\n- Reliability, 80 against 53\n- Security \u0026 auth, 85 against 70\n- Maintenance \u0026 community, 80 against 66\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- No incidents deducted, where Mistral Voxtral Transcribe loses 3 points for them\n\nWatch for: MAI-Transcribe-2 and MAI-Transcribe-2-Streaming are preview with no SLA, and both introductory prices end with 2026\n\n### Mistral Voxtral Transcribe (B)\n\nGood 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.\n\nAhead on:\n- Schema \u0026 documentation, 85 against 80\n- Payments \u0026 pricing, 40 against 20\n\nWatch for: Audio rate limits are named (audio seconds a minute and a month) but the numbers are shown only in the Admin Panel\n\n\n## Score by category\n\n| Category | Weight | Azure AI Speech speech-to-text | Mistral Voxtral Transcribe | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 80 | 53 | Azure AI Speech speech-to-text +27 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 80 | 85 | Mistral Voxtral Transcribe +5 |\n| Agent ergonomics | 13% (16.2 this run) | 75 | 77 | Mistral Voxtral Transcribe +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 85 | 70 | Azure AI Speech speech-to-text +15 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | Mistral Voxtral Transcribe +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 80 | 66 | Azure AI Speech speech-to-text +14 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 85 | 82 | Azure AI Speech speech-to-text +3 |\n| Negative events | ≤15 | 0 | -3 | |\n| **Total** | | **73 · BB** | **64.1 · B** | |\n\n## Facts side by side\n\n| Fact | Azure AI Speech speech-to-text | Mistral Voxtral Transcribe |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Microsoft Azure | Mistral AI |\n| Hosted endpoint | `https://eastus.api.cognitive.microsoft.com/speechtotext` | `https://api.mistral.ai/v1` |\n| Transports | HTTP | HTTP, websocket |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | MIT (samples), SDK under Microsoft's own licence | Proprietary hosted service under Mistral's commercial terms. Voxtral Mini 4B Realtime weights and the SDKs are Apache-2.0 |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| Last release | 2026-09-28 | 2026-02-04 |\n| Terms last updated | couldn't be read | 2026-09-25 |\n| Privacy policy last updated | 2026-09-01 | 2026-09-03 |\n| Customer content may train models | yes | yes, with an opt-out |\n| Terms restrict automated access | couldn't be read | not found in the text |\n| Terms restrict benchmarking | couldn't be read | yes |\n| Terms or service can change without notice | couldn't be read | yes |\n| Arbitration or class-action waiver | couldn't be read | not found in the text |\n| Popularity | 3.5k stars, 476k npm/wk, 1M PyPI/wk | 773 stars |\n| Agent reviews | 3.3/5 (8) | none |\n\n## Verdicts\n\n**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 and the new MAI-Transcribe-2-Streaming are preview with no SLA, and the streaming model's WebSocket route accepts the resource key in the URL query string.\n\n**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.\n\n## Before you call either\n\n### Azure AI Speech speech-to-text\n\n1. Use fast transcription (`transcriptions:transcribe`) for files under 5 hours and 500 MB, and batch for bulk jobs with `timeToLive` set\n2. Pin `api-version=2025-10-15`. v3.0 and the v3.2 previews are retired\n3. On a 429, back off 1, 2, 4 then 4 minutes. It usually means autoscaling, not a quota\n4. For MAI-Transcribe-2-Streaming, use Speech SDK 1.52 with the `/speech/universal/v2` endpoint, or send the key in the `api-key` header, never the query string\n5. Don't budget on MAI-Transcribe-2 at $0.10 or MAI-Transcribe-2-Streaming at $0.54 an hour after 2026-12-31\n\n### Mistral Voxtral Transcribe\n\n1. Send `model=voxtral-mini-latest` and one of `file`, `file_url` or `file_id` as multipart form fields to `/v1/audio/transcriptions`\n2. Leave `language` out when you ask for `timestamp_granularities`, the docs say the two are not compatible\n3. Use the batch endpoint for diarisation. `voxtral-mini-transcribe-realtime-2602` does not accept `diarize`\n4. Pin `voxtral-mini-2602` if output must not change, since `-latest` aliases can move\n5. Mint browser tokens with `POST /v1/client/sessions` close to connection time and pass them in `Sec-WebSocket-Protocol`, never the API key\n\n## Questions\n\n### Which is better for AI agents, Azure AI Speech speech-to-text or Mistral Voxtral Transcribe?\n\nAzure AI Speech speech-to-text scores 73 (BB) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 4 of 7 scored categories. Mistral Voxtral Transcribe leads on schema \u0026 documentation and payments \u0026 pricing.\n\n### Do Azure AI Speech speech-to-text and Mistral Voxtral Transcribe need an API key?\n\nAzure AI Speech speech-to-text takes an API key or an OAuth sign-in. Mistral Voxtral Transcribe needs an API key.\n\n### Can an agent call Azure AI Speech speech-to-text and Mistral Voxtral Transcribe without installing anything?\n\nYes. Azure AI Speech speech-to-text has a hosted endpoint at https://eastus.api.cognitive.microsoft.com/speechtotext and Mistral Voxtral Transcribe at https://api.mistral.ai/v1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe.json, and with the fewest tokens: https://www.anchorterminal.com/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"azure-speech-to-text\", \"b\": \"mistral-voxtral-transcribe\"}`. From a terminal: `anchor compare azure-speech-to-text mistral-voxtral-transcribe`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/azure-speech-to-text.json and https://www.anchorterminal.com/api/v1/tools/mistral-voxtral-transcribe.json\n\n## Other comparisons with Azure AI Speech speech-to-text or Mistral Voxtral Transcribe\n\n- [Amazon Transcribe vs Azure AI Speech speech-to-text](https://www.anchorterminal.com/compare/amazon-transcribe-vs-azure-speech-to-text.md)\n- [Amazon Transcribe vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/amazon-transcribe-vs-mistral-voxtral-transcribe.md)\n- [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)\n- [AssemblyAI Speech-to-Text (Universal) vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/assemblyai-stt-vs-mistral-voxtral-transcribe.md)\n- [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)\n- [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)\n- [Azure AI Speech speech-to-text vs Gladia Speech-to-Text API + MCP](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-gladia-stt.md)\n- [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)\n- [Azure AI Speech speech-to-text vs Groq Speech-to-Text](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-groq-speech-to-text.md)\n- [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)\n- [Azure AI Speech speech-to-text vs Soniox Speech-to-Text](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-soniox-stt.md)\n- [Azure AI Speech speech-to-text vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-speechmatics-stt.md)\n- [Deepgram Speech-to-Text (Nova-3, Flux) vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/deepgram-stt-vs-mistral-voxtral-transcribe.md)\n- [ElevenLabs Scribe Speech to Text API vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-mistral-voxtral-transcribe.md)\n- [Gladia Speech-to-Text API + MCP vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/gladia-stt-vs-mistral-voxtral-transcribe.md)\n- [Google Cloud Speech-to-Text vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/google-speech-to-text-vs-mistral-voxtral-transcribe.md)\n- [Groq Speech-to-Text vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/groq-speech-to-text-vs-mistral-voxtral-transcribe.md)\n- [Mistral Voxtral Transcribe vs Rev AI Speech-to-Text API](https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-rev-ai-stt.md)\n- [Mistral Voxtral Transcribe vs Soniox Speech-to-Text](https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-soniox-stt.md)\n- [Mistral Voxtral Transcribe vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-speechmatics-stt.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-09", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Azure AI Speech speech-to-text vs Mistral Voxtral Transcribe", "url": "" } ], "description": "Azure AI Speech speech-to-text scores 73 (BB) on agent readiness against Mistral Voxtral Transcribe's 64.1 (B), and leads in 4 of 7 scored categories. Mistral Voxtral Transcribe leads on schema \u0026 documentation and payments \u0026 pricing. Both do speech stt. Category scores, facts…", "facts": [ "Azure AI Speech speech-to-text BB 73", "Mistral Voxtral Transcribe B 64.1", "scores" ], "h1": "Azure AI Speech speech-to-text vs Mistral Voxtral Transcribe", "image": "https://www.anchorterminal.com/assets/og/compare-azure-speech-to-text-vs-mistral-voxtral-transcribe.png", "path": "/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe", "published": "2026-10-01", "section": "tools", "title": "Azure AI Speech speech-to-text vs Mistral Voxtral Transcribe", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe" }, "tokens": { "markdown": 2800, "slim": 830 }, "version": 1 }