{ "data": { "a": { "slug": "ibm-watson-stt", "name": "IBM Watson Speech to Text", "vendor": "IBM", "vendorUrl": "https://www.ibm.com/products/speech-to-text", "kind": "model", "category": "speech-to-text", "summary": "IBM Watson Speech to Text transcribes audio over synchronous and asynchronous HTTP and a WebSocket interface on IBM Cloud, with large speech models, next-generation models, custom language and acoustic models, speaker labels and language identification.", "url": "https://www.anchorterminal.com/tools/ibm-watson-stt", "markdownUrl": "https://www.anchorterminal.com/tools/ibm-watson-stt.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/ibm-watson-stt.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/ibm-watson-stt.json", "dns": "ibm-watson-stt.grade.anchorterminal.com", "transports": [ "http", "websocket" ], "packages": [ { "registry": "pypi", "name": "ibm-watson" }, { "registry": "npm", "name": "ibm-watson" } ], "auth": "api-key", "authNotes": "An IBM Cloud IAM API key per service instance, exchanged for a bearer token or sent with Basic auth as `apikey:\u003ckey\u003e`. Service credentials carry IAM roles. The WebSocket interface takes the IAM token as an `access_token` query parameter.", "pricing": "freemium", "pricingNotes": "Lite plan free for 500 minutes a month, deleted after 30 days of inactivity. Plus plan $0.02 a minute up to 999,999 minutes a month and $0.01 above, with up to 100 concurrent requests. Premium by quote.", "priceSummary": "Freemium", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs or API reference (checked 2026-11-06). Billing runs through an IBM Cloud account.", "endpoints": [] }, "toolCount": 0, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://cloud.ibm.com/docs/speech-to-text", "capabilities": [ "speech.stt", "speech.streaming", "speech.batch", "speech.diarisation", "speech.languages" ], "tags": [ "hosted", "freemium", "closed-source", "python", "typescript", "enterprise", "streaming", "batch", "async-jobs", "webhooks" ], "lastRelease": "2026-06-29", "graded": true, "anchor": { "graded": true, "score": 54.5, "grade": "C", "agentReady": false, "rank": 904, "ranked": true, "rankOf": 1486, "categoryRank": 18, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 66, "maintenance": 33, "payments": 40, "reliability": 40, "schema": 55, "security": 68, "transparency": 80 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "Watson STT covers sync, async and WebSocket transcription in ten locations, with custom models, $0.02 a minute on Plus and 500 free minutes. There is no machine-readable spec or readable status history, requests are logged for improvement unless opted out, the WebSocket token goes in the URL, and the last release note is from June 2026.", "bestFor": "Enterprises on IBM Cloud needing custom acoustic models, HIPAA on Premium and many locations.", "strengths": [ "Sync, async with callbacks and WebSocket streaming on one service", "500 free minutes a month on Lite and $0.02 a minute on Plus", "Custom language and acoustic models on paid plans", "Dated deprecation of previous-generation models with over a year of notice", "`DELETE /v1/user_data` removes data by customer ID" ], "weaknesses": [ "No public OpenAPI file or llms.txt", "The WebSocket interface takes the IAM token as a URL query parameter", "Requests are logged by default to improve the service unless the account or request opts out", "The status page is drawn by script and no SLA was read", "No release note since 29 June 2026" ], "agentNotes": [ "Send `X-Watson-Learning-Opt-Out: true` or opt out at account level before sending sensitive audio", "Use the async `/v1/recognitions` interface with a callback for files over 100 MB, up to 1 GB", "Pass a large speech or next-generation model name in `model`, since previous-generation models were removed", "Tag requests with `X-Watson-Metadata: customer_id=...` so the data can be deleted later", "Keep within 100 concurrent requests on Plus across HTTP and WebSocket" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 54.5 } ], "editorialScores": { "ergonomics": 66, "maintenance": 33, "payments": 40, "reliability": 40, "schema": 55, "security": 68, "transparency": 65 }, "provenanceScore": 94, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install ibm-watson" }, "letme": { "capability": "https://letme.dev/speech.stt", "tool": "https://letme.dev/ibm-watson-stt" }, "sameCompany": [ "granite-embedding-small-english-r2", "granite-guardian", "granite-switch", "granite-4-2-3b" ], "area": "voice", "unitPrices": [ { "item": "Plus plan, first 999,999 minutes a month", "unit": "audio-minute", "usd": 0.02 }, { "item": "Plus plan, from 1,000,000 minutes a month", "unit": "audio-minute", "usd": 0.01 } ], "provenance": { "legalEntity": "International Business Machines Corporation", "domain": "ibm.com", "domainRegistered": "1986-03-19", "domainNote": "The endpoints are on watson.cloud.ibm.com, under ibm.com.", "endpointOnVendorDomain": true, "terms": "https://cloud.ibm.com/docs/overview?topic=overview-terms", "privacy": "https://www.ibm.com/privacy", "statusPage": "https://cloud.ibm.com/status", "changelog": "https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-release-notes", "securityTxt": "valid", "checked": "2026-11-06", "notes": [ "cloud.ibm.com/robots.txt disallows only /docs/search?q= and sets Content-Signal ai-train=yes, search=yes, ai-input=yes.", "www.ibm.com/.well-known/security.txt names IBM PSIRT, HackerOne and psirt@us.ibm.com and expires on 6 December 2026.", "cloud.ibm.com/status returns a page drawn by script, so its incident history wasn't read.", "The IBM Cloud terms page was found but its text wasn't read, so no clause is quoted.", "RDAP gives ibm.com a registration date of 19 March 1986." ], "score": 94 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/ibm-watson-stt.json", "live": { "slug": "ibm-watson-stt", "vendorStatus": { "page": "https://cloud.ibm.com/status", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:47:55.897466786Z" }, "versions": [ { "registry": "npm", "name": "ibm-watson", "version": "12.2.0", "seenAt": "2026-11-06T23:34:06.712780272Z" }, { "registry": "pypi", "name": "ibm-watson", "version": "11.2.0", "released": "2026-01-26", "seenAt": "2026-11-06T23:34:06.544738844Z" } ], "npmWeekly": 12367, "pypiWeekly": 10209, "securityTxt": { "url": "https://ibm.com/.well-known/security.txt", "state": "valid", "expires": "2026-12-07T00:00:00+00:00", "checkedAt": "2026-11-07T16:00:08.596796331Z" }, "pages": [ { "url": "https://cloud.ibm.com/docs/speech-to-text?topic=speech-to-text-release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:01:17.694727718Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8dcf87213e78" }, { "url": "https://www.ibm.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:30:01.132495816Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "cf480cd7bcca" }, { "url": "https://cloud.ibm.com/docs/overview?topic=overview-terms", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:01:13.338724324Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "a0514cb0ed80" } ], "updatedAt": "2026-11-07T16:00:08.596796331Z" } }, "answer": "Mistral Voxtral Transcribe scores 63.1 (B) on agent readiness against IBM Watson Speech to Text's 54.5 (C), and leads in 6 of 7 scored categories.", "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", "dns": "mistral-voxtral-transcribe.grade.anchorterminal.com", "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, both deprecated and retiring on 30 April 2027. The Voxtral 3 models in Public Preview cost $0.0035 (Mini Transcribe 3), $0.004 (Small Transcribe 3) and $0.008 (Mini Transcribe Realtime 3) a minute (model cards and https://docs.mistral.ai/inference/pricing). 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": "2026-10-20", "graded": true, "anchor": { "graded": true, "score": 63.1, "grade": "B", "agentReady": false, "rank": 526, "ranked": true, "rankOf": 1486, "categoryRank": 14, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 77, "maintenance": 88, "payments": 40, "reliability": 53, "schema": 85, "security": 70, "transparency": 83 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-02" }, "negative": -6, "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", "2026-10-20 to 2026-11-01. Minor releases of the official SDKs list \"Breaking changes\" with no advance notice found. Python 3.3.0 (20 October) and TypeScript 3.1.0 change the `type` field in `chat.complete()` and `agents.complete()` and remove `expressiveness` and `phoneme_hints` from audio agent configuration; Python 3.4.0 (23 October) makes `configuration` required on `audio.agents.create()`; Python 3.6.0 (27 October) removes usage fields from speech responses; Python 3.7.0 (1 November) changes `gender` and removes `slug` in `audio.voices.create()`. One term at the floor, as mistral-api carries for the same SDKs (https://github.com/mistralai/client-python/blob/main/RELEASES.md). -3" ], "verdict": "Batch transcription costs $0.003 a minute and takes one multipart call with a file, a URL or an uploaded file ID. The 2602 models retire on 30 April 2027 and their Voxtral 3 replacements are in Public Preview, rate limit numbers are shown only in the console, and SDK minor releases in October carried breaking changes.", "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, and the 2602 models got the six-month retirement notice the lifecycle policy promises", "Voxtral 3 adds diarisation and turn detection to realtime transcription, in Public Preview since 20 October 2026" ], "weaknesses": [ "Voxtral Mini Transcribe 2 and Realtime 2602 retire on 30 April 2027, and their Voxtral 3 replacements are Public Preview with silent updates allowed", "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 2602 realtime model cannot diarise", "The compromised `mistralai` 2.4.6 on PyPI harvested credentials on import for three hours on 12 May 2026, and SDK minors from 20 October carried breaking changes", "No SLA found, and status.mistral.ai has answered our requests with a bot check since 8 October 2026" ], "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 with the 2602 models. `voxtral-mini-transcribe-realtime-2602` does not accept `diarize`, while Realtime 3 does", "Pin `voxtral-mini-2602` if output must not change until its 30 April 2027 retirement, and test `voxtral-mini-transcribe-3-0` before then, since Public Preview models can change silently", "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": 4, "avgRating": 4, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.1 } ], "editorialScores": { "ergonomics": 77, "maintenance": 88, "payments": 40, "reliability": 53, "schema": 85, "security": 70, "transparency": 73 }, "provenanceScore": 92, "checked": { "categories": { "ergonomics": "2026-11-02", "maintenance": "2026-11-02", "payments": "2026-11-02", "reliability": "2026-11-02", "schema": "2026-11-02", "security": "2026-11-02", "transparency": "2026-11-02" }, "last": "2026-11-02", "lastMoved": "2026-11-02", "oldest": "2026-11-02", "stale": false, "staleAfterDays": 90 } }, "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", "mistral-vibe-cli", "mistral-large-4" ], "sameModel": [ "voxtral-mini-4b-realtime-2602" ], "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 }, { "item": "Voxtral Mini Transcribe 3 (Public Preview)", "unit": "audio-minute", "usd": 0.0035 }, { "item": "Voxtral Small Transcribe 3 (Public Preview)", "unit": "audio-minute", "usd": 0.004 }, { "item": "Voxtral Mini Transcribe Realtime 3 (Public Preview)", "unit": "audio-minute", "usd": 0.008 } ], "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": 92 }, "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": "2026-11-07T18:20:40.308131411Z", "lastOk": true, "lastStatus": 404, "lastMs": 77, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 55, "p95ms24h": 113, "samples24h": 239, "samples30d": 7289, "days": [ { "date": "2026-10-09", "probes": 169, "ok": 169 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 251, "ok": 251 }, { "date": "2026-10-29", "probes": 248, "ok": 248 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.mistral.ai", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:21:29.356413243Z" }, "versions": [ { "registry": "github", "name": "mistralai/client-python", "version": "v3.7.0", "released": "2026-11-01", "seenAt": "2026-11-06T23:46:35.418015996Z" }, { "registry": "npm", "name": "@mistralai/mistralai", "version": "3.5.0", "seenAt": "2026-11-06T23:46:35.064786214Z" }, { "registry": "pypi", "name": "mistralai", "version": "3.7.0", "released": "2026-11-01", "seenAt": "2026-11-06T23:46:34.956541119Z" } ], "githubStars": 773, "npmWeekly": 6411114, "pypiWeekly": 3498549, "securityTxt": { "url": "https://mistral.ai/.well-known/security.txt", "state": "valid", "expires": "2027-05-05T23:59:59.000Z", "checkedAt": "2026-11-07T16:00:05.953035328Z" }, "llmsTxt": { "url": "https://docs.mistral.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:17.402754776Z" }, "domain": { "domain": "mistral.ai", "registered": "2019-05-15", "source": "https://rdap.identitydigital.services/rdap/domain/mistral.ai", "checkedAt": "2026-11-01T14:21:43.304217994Z" }, "pages": [ { "url": "https://docs.mistral.ai/models", "kind": "deprecations", "status": 304, "checkedAt": "2026-11-07T14:07:04.756112264Z", "changedAt": "2026-11-06T13:29:23.975304302Z", "fingerprint": "db7acc9b1a77" }, { "url": "https://docs.mistral.ai/models/voxtral-mini-transcribe-25-07", "kind": "deprecations", "status": 304, "checkedAt": "2026-11-07T14:07:10.958653256Z", "changedAt": "2026-11-05T12:31:02.076330054Z", "fingerprint": "f080c429e852" }, { "url": "https://docs.mistral.ai/models/voxtral-mini-transcribe-26-02", "kind": "deprecations", "status": 304, "checkedAt": "2026-11-07T14:07:12.96227371Z", "changedAt": "2026-11-05T12:31:04.09221216Z", "fingerprint": "704363a5af92" }, { "url": "https://docs.mistral.ai/inference/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-11-04T08:21:37.249943339Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "92e07817bbef" } ], "github": { "repo": "mistralai/client-python", "checkedAt": "2026-11-02T09:07:39.340819862Z", "stars": 774, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-01T20:09:32Z", "openIssues": 39, "openPRs": 3, "issuesOpened90d": 20, "issuesClosed90d": 2, "prsMerged90d": 23, "ci": { "branch": "main", "runs": 50, "success": 37, "failure": 13, "other": 0, "latest": "failure", "latestAt": "2026-11-01T20:33:28Z" }, "advisories": [ { "ghsa": "GHSA-wx9m-wx4f-4cmg", "severity": "critical", "published": "2026-05-12T12:57:44Z" } ], "replies": { "sampled": 25, "unanswered": 23, "medianDays": 21.9 } }, "updatedAt": "2026-11-07T18:21:29.356413243Z" } }, "edges": [ { "by": 55, "category": "maintenance", "leads": "mistral-voxtral-transcribe", "name": "Maintenance \u0026 community", "reasons": { "a": "Read as a model. The newest release note is 29 June 2026 (`parameter_set` for large speech models), 130 days ago (10). No dated entries in the 90 days from 8 August (0). Release notes, IBM support and a public docs repository last changed 30 June 2026 (8 of 15). Official SDKs, `ibm-watson` 11.2.0 on PyPI (26 January 2026) and 12.2.0 on npm (January 2026) (10 of 15). CI not read (5 of 10). Total 33.", "b": "Model reading. Mistral released three Voxtral 3 transcription models (Mini Transcribe 3, Small Transcribe 3 and Mini Transcribe Realtime 3) in Public Preview on 20 October 2026, 13 days before this check (30). The lifecycle policy promises six months' notice for GA models, and Transcribe 2 and Realtime 2602 were deprecated on 31 October with retirement on 30 April 2027, 181 days (12 of 12). No transcription model was retired in the 90 days to 2 November; Voxtral Mini Transcribe (2507) retired on 31 May 2026 (8 of 8). Six dated changelog entries from 31 August to 22 October, one of them the Voxtral 3 release, read as mistral-api reads the same changelog (10 of 15). The eight newest open issues on client-python had zero or one comment per the 8 October check (5 of 10). Official `mistralai` 3.7.0 (1 November) per the client-python RELEASES.md, and `@mistralai/mistralai`, with a v2 to v3 migration guide (15). Both are generated from the OpenAPI document, with test, lint and example workflows in the repository (8 of 10). 30+12+8+10+5+15+8 = 88." }, "scores": { "a": 33, "b": 88 } }, { "by": 30, "category": "schema", "leads": "mistral-voxtral-transcribe", "name": "Schema \u0026 documentation", "reasons": { "a": "No public OpenAPI or other machine-readable definition was found (0). No llms.txt (0). The reference says which parameters each model family supports and the docs cover each feature (15 of 20). Typed parameters with defaults, ranges and enums (13 of 15). curl and SDK examples on every method, and errors with `error`, `code`, `code_description` and `warnings`, with invalid arguments reported as warnings (12 of 15). Versioned `/v1` paths and dated release notes back to 2015 (15). Total 55.", "b": "Model reading. The public OpenAPI document covers `/v1/audio/transcriptions`, its SSE streaming form and `/v1/client/sessions`. The realtime WebSocket messages are described by SDK types and guide examples, not by the document (22 of 25). llms.txt with Markdown twins of the speech-to-text, offline, realtime and client authentication pages (10). The guides say which model each endpoint runs, that `timestamp_granularities` and `language` cannot be combined and that realtime cannot diarise, and carry an OpenAI SDK compatibility table. In the OpenAPI document `diarize`, `context_bias` and `temperature` have no description (14 of 20). `timestamp_granularities` is an enum of `segment` and `word`, `language` is a two-letter pattern and `context_bias` items have a pattern, while `model` is a free string (12 of 15). curl, Python and TypeScript examples on each guide and a shared error glossary. The OpenAPI response example still names `voxtral-mini-2507` (12 of 15). Dated model identifiers and a dated changelog (15)." }, "scores": { "a": 55, "b": 85 } }, { "by": 13, "category": "reliability", "leads": "mistral-voxtral-transcribe", "name": "Reliability", "reasons": { "a": "IBM Cloud has a status page at cloud.ibm.com/status, but it is drawn by script and showed no components or history to our reader, read as gemini-live's script-shell page was (10 of 20, and 5 for no readable history). Plus allows up to 100 concurrent transcription requests across WebSocket and HTTP (15). No 429 or backoff guidance was found in the API reference or the docs repository (0). No SLA was read for the service (0, unchecked). Next-generation and large speech models are GA, language by language (10). 10 + 5 + 15 + 0 + 0 + 10 = 40.", "b": "Hosted reading. The docs point to status.mistral.ai, a Rootly page with component uptime bars per the 1 and 2 October reading on the other Mistral listings (20). The page has answered with a Cloudflare bot check since 8 October, robots.txt included on 2 November, so it is treated as blocked and the 90-day record for audio was not read (5, unread and not a finding against the vendor). The limits page names audio seconds a minute and audio seconds a month as the audio limits, with the numbers shown only in the Admin Panel, per the 8 October check (3 of 15). The error glossary tells callers to back off exponentially on 429, 500, 502, 503 and 504 and to read the `Retry-After` header, and the official SDKs retry with backoff. Transcription is a stateless call (15). No SLA found (0). Voxtral Mini Transcribe 2 and Realtime (2602) are deprecated but served until 30 April 2027, and `voxtral-mini-latest` still points to Transcribe 2, while the Voxtral 3 transcription models are Public Preview (10)." }, "scores": { "a": 40, "b": 53 } }, { "by": 11, "category": "ergonomics", "leads": "mistral-voxtral-transcribe", "name": "Agent ergonomics", "reasons": { "a": "API reading of the checklist. Timestamps, word confidence, alternatives and speaker labels are opt-in (15 of 25). Async jobs and custom models list, and async results can go to a callback URL (12 of 20). Structured errors and warnings an agent can act on (15 of 20). Async jobs take a `user_token`, results have a TTL, and jobs can be deleted, with no idempotency key (12 of 20). Most parameters are optional. Official SDKs including Python, Node and Swift, though the Python and Node SDKs last released in January 2026 (12 of 15). Total 66.", "b": "API reading, as for the other speech-to-text listings. Segments, word timestamps and speaker labels are returned only when asked for, and the default response is the text, the language and usage. No subtitle or plain-text output format was found (18 of 25). There is no transcript store to page through. Volume goes through the batch API, which accepts `/v1/audio/transcriptions` (12 of 20). Errors return `type`, `param` and `code` with a fix per status in the glossary (17 of 20). The call is stateless and safe to retry, the SDKs retry with backoff, and no idempotency key exists or is needed (15 of 20). `model` is the only required field beside the audio source, and there are official Python and TypeScript SDKs plus OpenAI SDK compatibility for the batch endpoint (15)." }, "scores": { "a": 66, "b": 77 } } ], "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "IBM", "b": "Mistral AI", "name": "Vendor" }, { "a": "no (local only)", "b": "https://api.mistral.ai/v1", "name": "Hosted endpoint" }, { "a": "HTTP, websocket", "b": "HTTP, websocket", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary hosted service under Mistral's commercial terms. Voxtral Mini 4B Realtime weights and the SDKs are Apache-2.0", "name": "Licence" }, { "a": "0", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "2026-06-29", "b": "2026-10-20", "name": "Last release" }, { "a": "no date given", "b": "2026-09-25", "name": "Terms last updated" }, { "a": "2026-08-25", "b": "2026-09-03", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes, with an opt-out", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "773 stars", "name": "Popularity" }, { "a": "none", "b": "4/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "Mistral Voxtral Transcribe scores 63.1 (B) on agent readiness against IBM Watson Speech to Text's 54.5 (C), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, IBM Watson Speech to Text or Mistral Voxtral Transcribe?" }, { "answer": "Both need an API key.", "question": "Do IBM Watson Speech to Text and Mistral Voxtral Transcribe need an API key?" }, { "answer": "No hosted endpoint is listed for IBM Watson Speech to Text. Mistral Voxtral Transcribe has a hosted endpoint at https://api.mistral.ai/v1.", "question": "Can an agent call IBM Watson Speech to Text and Mistral Voxtral Transcribe without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": [ "No incidents deducted, where Mistral Voxtral Transcribe loses 6 points for them" ], "goodFor": "Enterprises on IBM Cloud needing custom acoustic models, HIPAA on Premium and many locations.", "slug": "ibm-watson-stt", "watchFor": "No public OpenAPI file or llms.txt" }, { "aheadOn": [ "Reliability, 53 against 40", "Schema \u0026 documentation, 85 against 55", "Agent ergonomics, 77 against 66", "Maintenance \u0026 community, 88 against 33" ], "also": [ "A hosted endpoint, with nothing to install" ], "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": "Voxtral Mini Transcribe 2 and Realtime 2602 retire on 30 April 2027, and their Voxtral 3 replacements are Public Preview with silent updates allowed" } ], "history": { "ibm-watson-stt": null, "mistral-voxtral-transcribe": [ { "causes": [ "product", "event" ], "date": "2026-11-02", "delta": -1.1, "from": 64.2, "fromGrade": "B", "to": 63.1, "toGrade": "B" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 64.1, "fromGrade": "B", "to": 64.2, "toGrade": "B" } ] }, "job": { "capability": "speech.stt", "name": "Speech-to-text" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-ibm-watson-stt.json", "title": "Amazon Transcribe vs IBM Watson Speech to Text", "url": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-ibm-watson-stt" }, { "json": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-mistral-voxtral-transcribe.json", "title": "Amazon Transcribe vs Mistral Voxtral Transcribe", "url": 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"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-ibm-watson-stt.json", "title": "ElevenLabs Scribe Speech to Text API vs IBM Watson Speech to Text", "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-ibm-watson-stt" }, { "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/giggy-stt-vs-ibm-watson-stt.json", "title": "Giggy Speech to Text vs IBM Watson Speech to Text", "url": "https://www.anchorterminal.com/compare/giggy-stt-vs-ibm-watson-stt" }, { "json": "https://www.anchorterminal.com/compare/giggy-stt-vs-mistral-voxtral-transcribe.json", "title": "Giggy Speech to Text vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/giggy-stt-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/gladia-stt-vs-ibm-watson-stt.json", "title": "Gladia Speech-to-Text API + MCP vs IBM Watson Speech to Text", "url": "https://www.anchorterminal.com/compare/gladia-stt-vs-ibm-watson-stt" }, { "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-ibm-watson-stt.json", "title": "Google Cloud Speech-to-Text vs IBM Watson Speech to Text", "url": 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Text vs Inworld STT", "url": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-inworld-stt" }, { "json": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-minimax-stt.json", "title": "IBM Watson Speech to Text vs MiniMax Speech-to-Text", "url": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-minimax-stt" }, { "json": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-openai-speech-to-text.json", "title": "IBM Watson Speech to Text vs OpenAI Speech to Text", "url": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-openai-speech-to-text" }, { "json": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-rev-ai-stt.json", "title": "IBM Watson Speech to Text vs Rev AI Speech-to-Text API", "url": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-rev-ai-stt" }, { "json": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-smallest-pulse-stt.json", "title": "IBM Watson Speech to Text vs Smallest.ai Pulse STT", "url": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-smallest-pulse-stt" }, { "json": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-soniox-stt.json", "title": "IBM Watson Speech to Text vs Soniox Speech-to-Text", "url": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-soniox-stt" }, { "json": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-speechmatics-stt.json", "title": "IBM Watson Speech to Text vs Speechmatics Speech-to-Text", "url": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-speechmatics-stt" }, { "json": "https://www.anchorterminal.com/compare/inworld-stt-vs-mistral-voxtral-transcribe.json", "title": "Inworld STT vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/inworld-stt-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/minimax-stt-vs-mistral-voxtral-transcribe.json", "title": "MiniMax Speech-to-Text vs Mistral Voxtral Transcribe", "url": "https://www.anchorterminal.com/compare/minimax-stt-vs-mistral-voxtral-transcribe" }, { "json": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-openai-speech-to-text.json", "title": "Mistral Voxtral Transcribe vs OpenAI Speech to Text", "url": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-openai-speech-to-text" }, { "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-smallest-pulse-stt.json", "title": "Mistral Voxtral Transcribe vs Smallest.ai Pulse STT", "url": "https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-smallest-pulse-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" } ], "panel": null, "scores": [ { "by": 13, "edge": "mistral-voxtral-transcribe", "ibm-watson-stt": 40, "key": "reliability", "mistral-voxtral-transcribe": 53, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 30, "edge": "mistral-voxtral-transcribe", "ibm-watson-stt": 55, "key": "schema", "mistral-voxtral-transcribe": 85, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 11, "edge": "mistral-voxtral-transcribe", "ibm-watson-stt": 66, "key": "ergonomics", "mistral-voxtral-transcribe": 77, "name": "Agent ergonomics", "weight": 13 }, { "by": 2, "edge": "mistral-voxtral-transcribe", "ibm-watson-stt": 68, "key": "security", "mistral-voxtral-transcribe": 70, "name": "Security \u0026 auth", "weight": 14 }, { "by": 0, "edge": "", "ibm-watson-stt": 40, "key": "payments", "mistral-voxtral-transcribe": 40, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 55, "edge": "mistral-voxtral-transcribe", "ibm-watson-stt": 33, "key": "maintenance", "mistral-voxtral-transcribe": 88, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 3, "edge": "mistral-voxtral-transcribe", "ibm-watson-stt": 80, "key": "transparency", "mistral-voxtral-transcribe": 83, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Mistral Voxtral Transcribe scores 63.1 (B) on agent readiness against IBM Watson Speech to Text's 54.5 (C), and leads in 6 of 7 scored categories. Both do speech-to-text.", "tasks": [ { "a": "$0.60 to $1.20", "b": "$0.18 to $0.48", "cheaper": "mistral-voxtral-transcribe", "task": "Transcribe a one-hour meeting", "what": "60 minutes of recorded audio" } ], "tutorials": [], "verdicts": { "ibm-watson-stt": "Watson STT covers sync, async and WebSocket transcription in ten locations, with custom models, $0.02 a minute on Plus and 500 free minutes. There is no machine-readable spec or readable status history, requests are logged for improvement unless opted out, the WebSocket token goes in the URL, and the last release note is from June 2026.", "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. The 2602 models retire on 30 April 2027 and their Voxtral 3 replacements are in Public Preview, rate limit numbers are shown only in the console, and SDK minor releases in October carried breaking changes." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-mistral-voxtral-transcribe", "json": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-mistral-voxtral-transcribe.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-mistral-voxtral-transcribe.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/ibm-watson-stt-vs-mistral-voxtral-transcribe.min.md" }, "markdown": "Mistral Voxtral Transcribe scores 63.1 (B) on agent readiness against IBM Watson Speech to Text's 54.5 (C), and leads in 6 of 7 scored categories. Both do speech-to-text.\n\n- IBM Watson Speech to Text: grade C, 54.5/100, rank #904 of 1486. Markdown https://www.anchorterminal.com/tools/ibm-watson-stt.md · JSON https://www.anchorterminal.com/api/v1/tools/ibm-watson-stt.json\n- Mistral Voxtral Transcribe: grade B, 63.1/100, rank #526 of 1486. Markdown https://www.anchorterminal.com/tools/mistral-voxtral-transcribe.md · JSON https://www.anchorterminal.com/api/v1/tools/mistral-voxtral-transcribe.json\n- Best speech-to-text APIs for AI agents: https://www.anchorterminal.com/best/speech-to-text/index.md\n- All 320 stt comparisons: https://www.anchorterminal.com/compare/speech-to-text/index.md\n\n## Which one, for what\n\n### IBM Watson Speech to Text (C)\n\nGood for: Enterprises on IBM Cloud needing custom acoustic models, HIPAA on Premium and many locations.\n\nAlso in its favour:\n- No incidents deducted, where Mistral Voxtral Transcribe loses 6 points for them\n\nWatch for: No public OpenAPI file or llms.txt\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- Reliability, 53 against 40\n- Schema \u0026 documentation, 85 against 55\n- Agent ergonomics, 77 against 66\n- Maintenance \u0026 community, 88 against 33\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: Voxtral Mini Transcribe 2 and Realtime 2602 retire on 30 April 2027, and their Voxtral 3 replacements are Public Preview with silent updates allowed\n\n\n## Why the edge\n\n### Maintenance \u0026 community: Mistral Voxtral Transcribe +55\n\n- IBM Watson Speech to Text (33): Read as a model. The newest release note is 29 June 2026 (`parameter_set` for large speech models), 130 days ago (10). No dated entries in the 90 days from 8 August (0). Release notes, IBM support and a public docs repository last changed 30 June 2026 (8 of 15). Official SDKs, `ibm-watson` 11.2.0 on PyPI (26 January 2026) and 12.2.0 on npm (January 2026) (10 of 15). CI not read (5 of 10). Total 33.\n- Mistral Voxtral Transcribe (88): Model reading. Mistral released three Voxtral 3 transcription models (Mini Transcribe 3, Small Transcribe 3 and Mini Transcribe Realtime 3) in Public Preview on 20 October 2026, 13 days before this check (30). The lifecycle policy promises six months' notice for GA models, and Transcribe 2 and Realtime 2602 were deprecated on 31 October with retirement on 30 April 2027, 181 days (12 of 12). No transcription model was retired in the 90 days to 2 November; Voxtral Mini Transcribe (2507) retired on 31 May 2026 (8 of 8). Six dated changelog entries from 31 August to 22 October, one of them the Voxtral 3 release, read as mistral-api reads the same changelog (10 of 15). The eight newest open issues on client-python had zero or one comment per the 8 October check (5 of 10). Official `mistralai` 3.7.0 (1 November) per the client-python RELEASES.md, and `@mistralai/mistralai`, with a v2 to v3 migration guide (15). Both are generated from the OpenAPI document, with test, lint and example workflows in the repository (8 of 10). 30+12+8+10+5+15+8 = 88.\n\n### Schema \u0026 documentation: Mistral Voxtral Transcribe +30\n\n- IBM Watson Speech to Text (55): No public OpenAPI or other machine-readable definition was found (0). No llms.txt (0). The reference says which parameters each model family supports and the docs cover each feature (15 of 20). Typed parameters with defaults, ranges and enums (13 of 15). curl and SDK examples on every method, and errors with `error`, `code`, `code_description` and `warnings`, with invalid arguments reported as warnings (12 of 15). Versioned `/v1` paths and dated release notes back to 2015 (15). Total 55.\n- Mistral Voxtral Transcribe (85): Model reading. The public OpenAPI document covers `/v1/audio/transcriptions`, its SSE streaming form and `/v1/client/sessions`. The realtime WebSocket messages are described by SDK types and guide examples, not by the document (22 of 25). llms.txt with Markdown twins of the speech-to-text, offline, realtime and client authentication pages (10). The guides say which model each endpoint runs, that `timestamp_granularities` and `language` cannot be combined and that realtime cannot diarise, and carry an OpenAI SDK compatibility table. In the OpenAPI document `diarize`, `context_bias` and `temperature` have no description (14 of 20). `timestamp_granularities` is an enum of `segment` and `word`, `language` is a two-letter pattern and `context_bias` items have a pattern, while `model` is a free string (12 of 15). curl, Python and TypeScript examples on each guide and a shared error glossary. The OpenAPI response example still names `voxtral-mini-2507` (12 of 15). Dated model identifiers and a dated changelog (15).\n\n### Reliability: Mistral Voxtral Transcribe +13\n\n- IBM Watson Speech to Text (40): IBM Cloud has a status page at cloud.ibm.com/status, but it is drawn by script and showed no components or history to our reader, read as gemini-live's script-shell page was (10 of 20, and 5 for no readable history). Plus allows up to 100 concurrent transcription requests across WebSocket and HTTP (15). No 429 or backoff guidance was found in the API reference or the docs repository (0). No SLA was read for the service (0, unchecked). Next-generation and large speech models are GA, language by language (10). 10 + 5 + 15 + 0 + 0 + 10 = 40.\n- Mistral Voxtral Transcribe (53): Hosted reading. The docs point to status.mistral.ai, a Rootly page with component uptime bars per the 1 and 2 October reading on the other Mistral listings (20). The page has answered with a Cloudflare bot check since 8 October, robots.txt included on 2 November, so it is treated as blocked and the 90-day record for audio was not read (5, unread and not a finding against the vendor). The limits page names audio seconds a minute and audio seconds a month as the audio limits, with the numbers shown only in the Admin Panel, per the 8 October check (3 of 15). The error glossary tells callers to back off exponentially on 429, 500, 502, 503 and 504 and to read the `Retry-After` header, and the official SDKs retry with backoff. Transcription is a stateless call (15). No SLA found (0). Voxtral Mini Transcribe 2 and Realtime (2602) are deprecated but served until 30 April 2027, and `voxtral-mini-latest` still points to Transcribe 2, while the Voxtral 3 transcription models are Public Preview (10).\n\n### Agent ergonomics: Mistral Voxtral Transcribe +11\n\n- IBM Watson Speech to Text (66): API reading of the checklist. Timestamps, word confidence, alternatives and speaker labels are opt-in (15 of 25). Async jobs and custom models list, and async results can go to a callback URL (12 of 20). Structured errors and warnings an agent can act on (15 of 20). Async jobs take a `user_token`, results have a TTL, and jobs can be deleted, with no idempotency key (12 of 20). Most parameters are optional. Official SDKs including Python, Node and Swift, though the Python and Node SDKs last released in January 2026 (12 of 15). Total 66.\n- Mistral Voxtral Transcribe (77): API reading, as for the other speech-to-text listings. Segments, word timestamps and speaker labels are returned only when asked for, and the default response is the text, the language and usage. No subtitle or plain-text output format was found (18 of 25). There is no transcript store to page through. Volume goes through the batch API, which accepts `/v1/audio/transcriptions` (12 of 20). Errors return `type`, `param` and `code` with a fix per status in the glossary (17 of 20). The call is stateless and safe to retry, the SDKs retry with backoff, and no idempotency key exists or is needed (15 of 20). `model` is the only required field beside the audio source, and there are official Python and TypeScript SDKs plus OpenAI SDK compatibility for the batch endpoint (15).\n\n## Score by category\n\n| Category | Weight | IBM Watson Speech to Text | Mistral Voxtral Transcribe | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 40 | 53 | Mistral Voxtral Transcribe +13 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 55 | 85 | Mistral Voxtral Transcribe +30 |\n| Agent ergonomics | 13% (16.2 this run) | 66 | 77 | Mistral Voxtral Transcribe +11 |\n| Security \u0026 auth | 14% (17.5 this run) | 68 | 70 | Mistral Voxtral Transcribe +2 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 40 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 33 | 88 | Mistral Voxtral Transcribe +55 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 80 | 83 | Mistral Voxtral Transcribe +3 |\n| Negative events | ≤15 | 0 | -6 | |\n| **Total** | | **54.5 · C** | **63.1 · B** | |\n\n## Facts side by side\n\n| Fact | IBM Watson Speech to Text | Mistral Voxtral Transcribe |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | IBM | Mistral AI |\n| Hosted endpoint | no (local only) | `https://api.mistral.ai/v1` |\n| Transports | HTTP, websocket | HTTP, websocket |\n| Auth | API key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | none | Proprietary hosted service under Mistral's commercial terms. Voxtral Mini 4B Realtime weights and the SDKs are Apache-2.0 |\n| Tools exposed | 0 | none |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| Last release | 2026-06-29 | 2026-10-20 |\n| Terms last updated | no date given | 2026-09-25 |\n| Privacy policy last updated | 2026-08-25 | 2026-09-03 |\n| Customer content may train models | not found in the text | yes, with an opt-out |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | none | 773 stars |\n| Agent reviews | none | 4/5 (4) |\n\n## What the same task costs\n\n| Task | IBM Watson Speech to Text | Mistral Voxtral Transcribe |\n| --- | --- | --- |\n| Transcribe a one-hour meeting | $0.60 to $1.20 | $0.18 to $0.48 |\n\n## How the scores have moved\n\n### IBM Watson Speech to Text\n\nNo score change since it was listed.\n\n### Mistral Voxtral Transcribe\n\n- -1.1 on 2 November 2026: product, negative event\n- +0.1 on 27 October 2026: checklist\n\n## Verdicts\n\n**IBM Watson Speech to Text.** Watson STT covers sync, async and WebSocket transcription in ten locations, with custom models, $0.02 a minute on Plus and 500 free minutes. There is no machine-readable spec or readable status history, requests are logged for improvement unless opted out, the WebSocket token goes in the URL, and the last release note is from June 2026.\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. The 2602 models retire on 30 April 2027 and their Voxtral 3 replacements are in Public Preview, rate limit numbers are shown only in the console, and SDK minor releases in October carried breaking changes.\n\n## Before you call either\n\n### IBM Watson Speech to Text\n\n1. Send `X-Watson-Learning-Opt-Out: true` or opt out at account level before sending sensitive audio\n2. Use the async `/v1/recognitions` interface with a callback for files over 100 MB, up to 1 GB\n3. Pass a large speech or next-generation model name in `model`, since previous-generation models were removed\n4. Tag requests with `X-Watson-Metadata: customer_id=...` so the data can be deleted later\n5. Keep within 100 concurrent requests on Plus across HTTP and WebSocket\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 with the 2602 models. `voxtral-mini-transcribe-realtime-2602` does not accept `diarize`, while Realtime 3 does\n4. Pin `voxtral-mini-2602` if output must not change until its 30 April 2027 retirement, and test `voxtral-mini-transcribe-3-0` before then, since Public Preview models can change silently\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, IBM Watson Speech to Text or Mistral Voxtral Transcribe?\n\nMistral Voxtral Transcribe scores 63.1 (B) on agent readiness against IBM Watson Speech to Text's 54.5 (C), and leads in 6 of 7 scored categories.\n\n### Do IBM Watson Speech to Text and Mistral Voxtral Transcribe need an API key?\n\nBoth need an API key.\n\n### Can an agent call IBM Watson Speech to Text and Mistral Voxtral Transcribe without installing anything?\n\nNo hosted endpoint is listed for IBM Watson Speech to Text. Mistral Voxtral Transcribe has a hosted endpoint at https://api.mistral.ai/v1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/ibm-watson-stt-vs-mistral-voxtral-transcribe.json, and with the fewest tokens: https://www.anchorterminal.com/compare/ibm-watson-stt-vs-mistral-voxtral-transcribe.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"ibm-watson-stt\", \"b\": \"mistral-voxtral-transcribe\"}`. From a terminal: `anchor compare ibm-watson-stt mistral-voxtral-transcribe`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/ibm-watson-stt.json and https://www.anchorterminal.com/api/v1/tools/mistral-voxtral-transcribe.json\n\n## Other comparisons with IBM Watson Speech to Text or Mistral Voxtral Transcribe\n\n- [Amazon Transcribe vs IBM Watson Speech to Text](https://www.anchorterminal.com/compare/amazon-transcribe-vs-ibm-watson-stt.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 IBM Watson Speech to Text](https://www.anchorterminal.com/compare/assemblyai-stt-vs-ibm-watson-stt.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 IBM Watson Speech to Text](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-ibm-watson-stt.md)\n- [Azure AI Speech speech-to-text vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-mistral-voxtral-transcribe.md)\n- [Cartesia Ink vs IBM Watson Speech to Text](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-ibm-watson-stt.md)\n- [Cartesia Ink vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-mistral-voxtral-transcribe.md)\n- [Deepgram Speech-to-Text (Nova-3, Flux) vs IBM Watson Speech to Text](https://www.anchorterminal.com/compare/deepgram-stt-vs-ibm-watson-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 IBM Watson Speech to Text](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-ibm-watson-stt.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- [Giggy Speech to Text vs IBM Watson Speech to Text](https://www.anchorterminal.com/compare/giggy-stt-vs-ibm-watson-stt.md)\n- [Giggy Speech to Text vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/giggy-stt-vs-mistral-voxtral-transcribe.md)\n- [Gladia Speech-to-Text API + MCP vs IBM Watson Speech to Text](https://www.anchorterminal.com/compare/gladia-stt-vs-ibm-watson-stt.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 IBM Watson Speech to Text](https://www.anchorterminal.com/compare/google-speech-to-text-vs-ibm-watson-stt.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 IBM Watson Speech to Text](https://www.anchorterminal.com/compare/groq-speech-to-text-vs-ibm-watson-stt.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- [IBM Watson Speech to Text vs Inworld STT](https://www.anchorterminal.com/compare/ibm-watson-stt-vs-inworld-stt.md)\n- [IBM Watson Speech to Text vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/ibm-watson-stt-vs-minimax-stt.md)\n- [IBM Watson Speech to Text vs OpenAI Speech to Text](https://www.anchorterminal.com/compare/ibm-watson-stt-vs-openai-speech-to-text.md)\n- [IBM Watson Speech to Text vs Rev AI Speech-to-Text API](https://www.anchorterminal.com/compare/ibm-watson-stt-vs-rev-ai-stt.md)\n- [IBM Watson Speech to Text vs Smallest.ai Pulse STT](https://www.anchorterminal.com/compare/ibm-watson-stt-vs-smallest-pulse-stt.md)\n- [IBM Watson Speech to Text vs Soniox Speech-to-Text](https://www.anchorterminal.com/compare/ibm-watson-stt-vs-soniox-stt.md)\n- [IBM Watson Speech to Text vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/ibm-watson-stt-vs-speechmatics-stt.md)\n- [Inworld STT vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/inworld-stt-vs-mistral-voxtral-transcribe.md)\n- [MiniMax Speech-to-Text vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/minimax-stt-vs-mistral-voxtral-transcribe.md)\n- [Mistral Voxtral Transcribe vs OpenAI Speech to Text](https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-openai-speech-to-text.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 Smallest.ai Pulse STT](https://www.anchorterminal.com/compare/mistral-voxtral-transcribe-vs-smallest-pulse-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)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": 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