{ "data": { "a": { "slug": "minimax-stt", "name": "MiniMax Speech-to-Text", "vendor": "MiniMax", "vendorUrl": "https://www.minimax.io", "kind": "model", "category": "speech-to-text", "summary": "MiniMax's speech-to-text API transcribes audio files of up to 500 seconds with its `asr-1.0` model in 20 languages, with optional streamed text output, speaker diarisation, segment timestamps and SRT or VTT subtitles.", "url": "https://www.anchorterminal.com/tools/minimax-stt", "markdownUrl": "https://www.anchorterminal.com/tools/minimax-stt.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/minimax-stt.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/minimax-stt.json", "dns": "minimax-stt.grade.anchorterminal.com", "transports": [ "http" ], "packages": [], "auth": "api-key", "authNotes": "Bearer API key created in the platform console under Account, API Keys. No scopes were found in the docs. Mainland China accounts use `https://api.minimaxi.com`.", "pricing": "usage", "pricingNotes": "$0.38 an hour of audio, pay as you go from a prepaid balance or through an M Plan subscription. Speech to text is for paid accounts only, with no free allowance.", "priceSummary": "Pay per use", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, OpenAPI file or pricing page (checked 2026-11-06). An empty balance returns 402 insufficient_balance_error with no payment requirements.", "endpoints": [] }, "toolCount": 0, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://platform.minimax.io/docs/guides/speech-to-text", "llmsTxt": "https://platform.minimax.io/docs/llms.txt", "openapi": "https://platform.minimax.io/docs/api-reference/speech/speech-to-text/api/openapi.json", "capabilities": [ "speech.stt", "speech.diarisation", "speech.languages" ], "tags": [ "official", "hosted", "usage-priced", "prepaid", "openapi", "llms-txt", "status-page" ], "graded": true, "anchor": { "graded": true, "score": 48.4, "grade": "D", "agentReady": false, "rank": 1114, "ranked": true, "rankOf": 1486, "categoryRank": 19, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 70, "maintenance": 6, "payments": 20, "reliability": 47, "schema": 82, "security": 33, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "MiniMax's ASR API has an OpenAPI file, typed error envelopes and a public price of $0.38 an hour, with diarisation and subtitle output. It takes files of up to 500 seconds only, allows 2 concurrent connections, has no free tier or status component, and no dated release.", "bestFor": "Cheap file transcription with diarisation and subtitles, strongest on Chinese and code-switched audio by the vendor's account.", "strengths": [ "OpenAPI 3.1 file with eight documented responses, and an error table with HTTP status, type and trigger", "$0.38 an hour of audio, published without a login", "Speaker diarisation, segment timestamps and SRT or VTT output from one call", "Automatic language detection with Chinese-English code-switching across 20 languages" ], "weaknesses": [ "Files only, up to 500 seconds and 50 MB; live audio input isn't supported", "2 concurrent connections and paid accounts only, with no free allowance", "No status page component and no dated release of `asr-1.0`", "Terms let MiniMax use inputs to improve its services, and no retention period for audio was found" ], "agentNotes": [ "Split recordings into pieces under 500 seconds before uploading, since longer audio returns 400", "Convert to mono 16 kHz or a compressed format to stay under 50 MB", "Use `verbose_json` for speakers and timestamps, and `json` only when streaming", "Treat 402 `insufficient_balance_error` as final and ask the user to top up", "Use `https://api.minimaxi.com` for a mainland China account" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 48.4 } ], "editorialScores": { "ergonomics": 70, "maintenance": 6, "payments": 20, "reliability": 47, "schema": 82, "security": 33, "transparency": 43 }, "provenanceScore": 82, "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": { "http": "curl -X POST https://api.minimax.io/v1/speech_to_text \\\n -H \"Authorization: Bearer $MINIMAX_API_KEY\" \\\n -F model=asr-1.0 -F file=@meeting.mp3 -F response_format=verbose_json" }, "letme": { "capability": "https://letme.dev/speech.stt", "tool": "https://letme.dev/minimax-stt" }, "sameCompany": [ "minimax-api", "minimax-video", "minimax-speech", "minimax-voice-cloning", "minimax-code", "minimax-m2-5", "minimax-m2-7", "minimax-m3-1-flash" ], "area": "voice", "unitPrices": [ { "item": "asr-1.0", "unit": "audio-minute", "usd": 0.00633, "note": "$0.38 an hour, paid accounts only" } ], "provenance": { "legalEntity": "Nanonoble Pte. Ltd.", "domain": "minimax.io", "domainRegistered": "2021-03-27", "endpointOnVendorDomain": true, "terms": "https://platform.minimax.io/protocol/terms-of-service", "privacy": "https://platform.minimax.io/protocol/privacy-policy", "statusPage": "https://status.minimax.io", "changelog": "https://platform.minimax.io/docs/release-notes/apis", "securityTxt": "none", "checked": "2026-11-06", "notes": [ "Nanonoble Pte. Ltd., 152 Beach Road, #14-02 Gateway East, Singapore, is named in the terms (effective 30 March 2026) and the privacy policy (updated 30 March 2026), read on 4 November 2026 from the document text the pages carry for the browser, as on the minimax-api listing. The 8 October reader recorded both pages as unreadable.", "RDAP for minimax.io gives a registration date of 2021-03-27 and a transfer on 2025-01-31, as recorded on 8 October.", "platform.minimax.io/.well-known/security.txt returns 404 (per the 8 October check), and www.minimax.io/.well-known/security.txt redirects to the home page.", "The API release notes page has no entry after 28 October 2025 on 4 November. Model releases are dated on a separate page, whose newest speech model is Speech 2.8 (23 January 2026).", "status.minimax.io/robots.txt disallows /api/, so incidents were read from the /history pages only.", "firstReleased and lastRelease are left empty, since no dated release of `asr-1.0` was found." ], "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/minimax-stt.json", "live": { "slug": "minimax-stt", "vendorStatus": { "page": "https://status.minimax.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:21:22.959559855Z" }, "securityTxt": { "url": "https://minimax.io/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:00:57.120551174Z" }, "llmsTxt": { "url": "https://platform.minimax.io/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:06.549207563Z" }, "updatedAt": "2026-11-07T18:21:22.959559855Z" } }, "answer": "Speechmatics Speech-to-Text scores 67.8 (B) on agent readiness against MiniMax Speech-to-Text's 48.4 (D), and leads in every scored category.", "b": { "slug": "speechmatics-stt", "name": "Speechmatics Speech-to-Text", "vendor": "Speechmatics", "vendorUrl": "https://www.speechmatics.com", "kind": "model", "category": "speech-to-text", "summary": "Speechmatics' APIs for batch and real-time transcription, including speaker-attributed turns for voice agents.", "url": "https://www.anchorterminal.com/tools/speechmatics-stt", "markdownUrl": "https://www.anchorterminal.com/tools/speechmatics-stt.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/speechmatics-stt.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/speechmatics-stt.json", "dns": "speechmatics-stt.grade.anchorterminal.com", "repo": "https://github.com/speechmatics/speechmatics-python-sdk", "license": "MIT (SDKs)", "transports": [ "http" ], "remoteUrl": "https://eu1.asr.api.speechmatics.com/v2", "packages": [ { "registry": "npm", "name": "@speechmatics/batch-client" }, { "registry": "npm", "name": "@speechmatics/real-time-client" }, { "registry": "pypi", "name": "speechmatics-batch" }, { "registry": "pypi", "name": "speechmatics-rt" } ], "auth": "api-key", "authNotes": "API key as a Bearer token. Short-lived JWTs for browser and realtime clients, passed as `?jwt=` on the WebSocket URL. A separate management token covers project and key administration.", "pricing": "usage", "pricingNotes": "$100 free credit with no card, then credits at $1 each before discounts, billed per hour of audio. Pre-recorded Melia 1 $0.12, Oak 1 $0.15, Standard $0.23, Enhanced $0.38. Realtime Melia 1 $0.20, Oak 1 $0.23, Standard $0.23, Enhanced $0.40, Linden 1 (Agent STT) $0.15 (was $0.20). Translation adds $0.49 an hour. Credit packs and subscriptions give up to 25 per cent off, and opting in to model training 33 per cent off. Sign-up and pack credits last 12 months (https://www.speechmatics.com/pricing).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 or machine payment in the docs or pricing. Card or prepaid credits only (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 20, "npmWeekly": 58050, "pypiWeekly": 48085, "asOf": "2026-09-30" }, "docsUrl": "https://docs.speechmatics.com", "llmsTxt": "https://docs.speechmatics.com/llms.txt", "openapi": "https://docs.speechmatics.com/batch.yaml", "capabilities": [ "speech.stt", "speech.streaming", "speech.batch", "speech.diarisation", "speech.languages", "speech.translation" ], "tags": [ "hosted", "no-card", "closed-source", "python", "typescript", "llms-txt", "streaming", "batch", "webhooks", "async-jobs", "enterprise", "self-hosted" ], "lastRelease": "2026-10-26", "graded": true, "anchor": { "graded": true, "score": 67.8, "grade": "B", "agentReady": false, "rank": 305, "ranked": true, "rankOf": 1486, "categoryRank": 9, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 70, "payments": 40, "reliability": 70, "schema": 90, "security": 65, "transparency": 76 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-01" }, "negative": -3, "negativeNotes": [ "7 August 2026, -3. Published behaviour changed for existing clients, announced the day it took effect. The 2026.08.07 Batch SaaS changelog entry says the default behaviour of GET /jobs/{jobid} and GET /jobs/{jobid}/transcript \"is changing\" so requests wait up to 2 seconds before returning unless the caller sends `wait=0`, and the docs were changed the same day. The rise to 5 seconds was likewise announced in the 2026.09.23 entry on the day it applied (the August docs said only that the default \"will increase\"), and folds into the same term (https://speechmatics.featurebase.app/en/changelog/20260807-batch-saas)" ], "verdict": "Training is opt-in and real-time audio is not stored. Enhanced transcription costs $0.38 an hour for files and $0.40 for live audio.", "bestFor": "Regulated or privacy-sensitive audio, multilingual batch with Melia 1, and voice agents that want speaker-attributed turns.", "strengths": [ "Training is opt-in only, and realtime audio isn't stored", "ISO/IEC 27001:2022 and SOC 2 Type II", "A Swagger 2.0 file for the Batch API, linked from the API reference", "Transcripts fetched as plain text, JSON or SRT", "$100 credit with no card" ], "weaknesses": [ "Enhanced costs $0.38 to $0.40 an hour, above most rivals", "Batch options travel as a JSON string inside a multipart form field", "429s carry a reason but no Retry-After or backoff guidance", "Realtime temporary keys travel in the WebSocket URL", "Free plan allows 2 realtime sessions" ], "agentNotes": [ "Set `\"model\": \"enhanced\"` explicitly. The default is `standard`", "Use notifications instead of polling. Polling waits 5 seconds by default since the 23 September 2026 change, and `wait=0` turns that off", "Fetch batch transcripts within 7 days. After that the API returns 404 `expired`", "Pass a `fetch_data` URL for files over 1 GB", "Use `/v2/agent` with `linden-1` for live agents instead of the plain realtime path", "Read the Batch API's Swagger file at https://docs.speechmatics.com/batch.yaml before building the multipart `config` field" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 67.8 } ], "editorialScores": { "ergonomics": 80, "maintenance": 70, "payments": 40, "reliability": 70, "schema": 90, "security": 65, "transparency": 65 }, "provenanceScore": 87, "checked": { "categories": { "ergonomics": "2026-11-01", "maintenance": "2026-11-01", "payments": "2026-11-01", "reliability": "2026-11-01", "schema": "2026-11-01", "security": "2026-11-01", "transparency": "2026-11-01" }, "last": "2026-11-01", "lastMoved": "2026-11-01", "oldest": "2026-11-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl -X POST https://eu1.asr.api.speechmatics.com/v2/jobs/ -H \"Authorization: Bearer $SPEECHMATICS_API_KEY\" \\\n -F data_file=@call.wav \\\n -F config='{\"type\":\"transcription\",\"transcription_config\":{\"language\":\"en\",\"model\":\"enhanced\",\"diarization\":\"speaker\"}}'" }, "letme": { "capability": "https://letme.dev/speech.stt", "tool": "https://letme.dev/speechmatics-stt" }, "area": "voice", "unitPrices": [ { "item": "Batch Melia 1", "unit": "audio-minute", "usd": 0.002, "note": "published as $0.12 an hour" }, { "item": "Batch Oak 1", "unit": "audio-minute", "usd": 0.0025, "note": "published as $0.15 an hour" }, { "item": "Batch Standard", "unit": "audio-minute", "usd": 0.0038, "note": "published as $0.23 an hour" }, { "item": "Batch Enhanced", "unit": "audio-minute", "usd": 0.0063, "note": "published as $0.38 an hour" }, { "item": "Realtime Melia 1", "unit": "audio-minute", "usd": 0.0033, "note": "published as $0.20 an hour" }, { "item": "Realtime Oak 1", "unit": "audio-minute", "usd": 0.0038, "note": "published as $0.23 an hour" }, { "item": "Realtime Standard", "unit": "audio-minute", "usd": 0.0038, "note": "published as $0.23 an hour" }, { "item": "Realtime Enhanced", "unit": "audio-minute", "usd": 0.0067, "note": "published as $0.40 an hour" }, { "item": "Linden 1 Agent STT", "unit": "audio-minute", "usd": 0.0025, "note": "published as $0.15 an hour, reduced from $0.20" }, { "item": "Translation add-on", "unit": "audio-minute", "usd": 0.0082, "note": "published as $0.49 an hour" } ], "provenance": { "legalEntity": "Cantab Research Ltd", "domain": "speechmatics.com", "domainRegistered": "2006-05-10", "endpointOnVendorDomain": true, "terms": "https://www.speechmatics.com/legal/terms-of-service", "privacy": "https://www.speechmatics.com/legal/privacy-policy", "statusPage": "https://status.speechmatics.com", "changelog": "https://speechmatics.featurebase.app/en/changelog", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "Trades as Speechmatics, company number 05697423 in England and Wales. US customers contract with Speechmatics (USA) Inc., a Delaware company" ], "score": 87 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/speechmatics-stt.json", "live": { "slug": "speechmatics-stt", "probe": { "target": "https://eu1.asr.api.speechmatics.com/v2", "method": "get", "lastAt": "2026-11-07T18:20:56.282256416Z", "lastOk": true, "lastStatus": 200, "lastMs": 192, "authRequired": false, "uptime24h": 100, "uptime30d": 99.99, "p50ms24h": 84, "p95ms24h": 319, "samples24h": 239, "samples30d": 7910, "days": [ { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "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": 250, "ok": 250 }, { "date": "2026-10-29", "probes": 249, "ok": 249 }, { "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": 247 }, { "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.speechmatics.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:22:02.437503825Z" }, "versions": [ { "registry": "github", "name": "speechmatics/speechmatics-python-sdk", "version": "tts/v0.2.0", "released": "2026-11-06", "seenAt": "2026-11-07T00:07:36.269591228Z" }, { "registry": "npm", "name": "@speechmatics/batch-client", "version": "5.4.2", "seenAt": "2026-11-07T00:07:31.891316877Z" }, { "registry": "npm", "name": "@speechmatics/real-time-client", "version": "8.6.2", "seenAt": "2026-11-07T00:07:32.6887692Z" }, { "registry": "pypi", "name": "speechmatics-batch", "version": "1.2.0", "released": "2026-11-06", "seenAt": "2026-11-07T00:07:34.261012083Z" }, { "registry": "pypi", "name": "speechmatics-rt", "version": "1.3.0", "released": "2026-11-06", "seenAt": "2026-11-07T00:07:34.401834825Z" } ], "githubStars": 20, "npmWeekly": 38070, "pypiWeekly": 18992, "securityTxt": { "url": "https://speechmatics.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:02:02.489220382Z" }, "llmsTxt": { "url": "https://docs.speechmatics.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:34:00.505658242Z" }, "domain": { "domain": "speechmatics.com", "registered": "2006-05-10", "source": "https://rdap.verisign.com/com/v1/domain/speechmatics.com", "checkedAt": "2026-11-01T14:25:12.815432254Z" }, "pages": [ { "url": "https://speechmatics.featurebase.app/en/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:20:30.550182583Z", "changedAt": "2026-11-05T13:04:51.469987554Z", "fingerprint": "48c0286c371c" }, { "url": "https://www.speechmatics.com/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-11-07T14:35:02.408280219Z", "changedAt": "2026-10-31T06:32:46.178807389Z", "fingerprint": "418585bd0fd0" }, { "url": "https://www.speechmatics.com/legal/privacy-policy", "kind": "privacy", "status": 304, "checkedAt": "2026-11-07T14:34:58.219976764Z", "changedAt": "2026-11-05T13:18:23.646886306Z", "fingerprint": "a7da558c513a" }, { "url": "https://www.speechmatics.com/legal/terms-of-service", "kind": "terms", "status": 304, "checkedAt": "2026-11-07T14:35:00.643106701Z", "changedAt": "2026-10-02T15:28:24.437639084Z", "fingerprint": "33b19ec6fdcb" } ], "github": { "repo": "speechmatics/speechmatics-python-sdk", "checkedAt": "2026-11-02T09:27:04.130422133Z", "stars": 20, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-28T13:31:15Z", "openIssues": 7, "openPRs": 14, "issuesOpened90d": 3, "issuesClosed90d": 1, "prsMerged90d": 12, "ci": { "branch": "main", "runs": 50, "success": 50, "failure": 0, "other": 0, "latest": "success", "latestAt": "2026-10-26T09:58:58Z" }, "replies": { "sampled": 18, "unanswered": 6, "medianDays": 6 } }, "updatedAt": "2026-11-07T18:22:02.437503825Z" } }, "edges": [ { "by": 64, "category": "maintenance", "leads": "speechmatics-stt", "name": "Maintenance \u0026 community", "reasons": { "a": "Read as a model. No dated release or change of `asr-1.0` was found on the model or API release notes or the status page (0). No dated ASR entries in the last 90 days (0). Support by email and Discord, not tested (6 of 15). No official SDK, and the MCP servers have no transcription tool (0 of 15). No package to judge (0 of 10). Total 6.", "b": "Model reading of the checklist, deprecation notice and support in place of release counts and issue replies. Changelog entries on 29 October 2026 for Batch SaaS and Agent STT, and speechmatics-rt 1.2.2 tagged on 26 October (30). Far more than three dated entries since 3 August, nine in October on the changelog's first page alone (10 of 10). No deprecation policy, and `operating_point`, the `region` field and the Voice SDK are marked deprecated with no removal date (0 of 10). A public changelog, a support portal with chat and email, and a community channel (10 of 15). SDK issues and reply times couldn't be read (0 of 10). Python packages speechmatics-batch 1.1.0 and speechmatics-rt 1.2.2, and JavaScript batch-client and real-time-client, current (15). A test workflow in the Python SDK, results not seen (5 of 10)." }, "scores": { "a": 6, "b": 70 } }, { "by": 32, "category": "security", "leads": "speechmatics-stt", "name": "Security \u0026 auth", "reasons": { "a": "Model reading of the checklist, with training and retention in place of the least-privilege and injection lines. Plain API keys from the console with no scopes found, and the docs say publicly leaked keys may be disabled, as on minimax-voice-cloning (20 of 30). The terms (effective 30 March 2026), as read for minimax-voice-cloning on 4 November, let MiniMax use input and generated content to operate, maintain, develop and improve its services, with no opt-out found, and the privacy policy rules out only training to profile or target consumers (5 of 20). No retention period for uploaded audio or transcripts was found (3 of 15). Each response carries a trace ID, with no audit log found (5 of 15). No security.txt, disclosure policy, bug bounty or certification found, as on the other MiniMax listings (0 of 20). Total 33.", "b": "Model reading of the checklist, with training and retention in place of least-privilege and injection lines. API keys as bearer tokens, with a separate management token for key administration (20). Browser and realtime clients pass temporary keys as `?jwt=` on the WebSocket URL, with a lifetime the caller sets from 60 to 86,400 seconds, so we deduct half (minus 5). Training is opt-in only, and opting in buys a 33 per cent discount (20). Realtime audio isn't stored, batch data is deleted after 7 days or on request (15). A usage reporting service exists, but we found no per-request audit log (10). ISO/IEC 27001:2022 and SOC 2 Type II with a SafeBase trust centre. No security.txt (404 on 1 November), disclosure policy, bug bounty or public advisories found (5)." }, "scores": { "a": 33, "b": 65 } }, { "by": 23, "category": "reliability", "leads": "speechmatics-stt", "name": "Reliability", "reasons": { "a": "Atlassian Statuspage at status.minimax.io with component history, but its components are LLM, Text-to-Speech and Video Generation, with none for speech to text (10 of 20). With no component, the history holds no record for transcription (5). Limits published with numbers, 2 concurrent connections and 30,000 audio seconds a minute (15). 429 is documented as `rate_limit_error`, and the general error code page says to retry later, with no backoff figures or Retry-After (7 of 15). No SLA in the terms or docs (0). `asr-1.0` is called the current public model with no beta label (10). 10 + 5 + 15 + 7 + 0 + 10 = 47.", "b": "Statuspage at status.speechmatics.com with components per region and history (20). Since 3 August, minor incidents only, each touching one region, one mode or a subset of requests. Batch AU slower for 2 hours on 10 August, a subset of Batch EU1, US1 and US2 jobs failing or slow for 56 minutes on 19 August, Realtime 4003 errors in the EU and US for 37 minutes on 4 September, and TLS errors for a subset of US Realtime sessions for about 2 hours on 10 September. The rest were scheduled database maintenance, a portal maintenance and a billing credit error, and nothing was posted after 10 September (20). Limits published with numbers, 10 new batch jobs and 50 status calls a second, 20,000 concurrent jobs, and 2 or 50 realtime sessions by plan (15). Both batch limits return 429 with a reason, but the docs only suggest notifications instead of polling and give no backoff or Retry-After (5). No SLA found for self-serve plans (0). Batch, Realtime and Agent STT on `/v2/agent` are GA (10)." }, "scores": { "a": 47, "b": 70 } }, { "by": 20, "category": "payments", "leads": "speechmatics-stt", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402 (0). $0.38 an hour published without a login (20). Speech to text is for paid accounts only (0). A person signs up in a browser and funds a balance (0). Total 20.", "b": "No x402, MPP or L402 (0). Per-hour prices for every model published without a login, with credits at $1 each before discounts (20). $100 credit with no card (20). A person signs up in a browser (0)." }, "scores": { "a": 20, "b": 40 } }, { "by": 13, "category": "transparency", "leads": "speechmatics-stt", "name": "Transparency \u0026 trust", "reasons": { "a": "Closed API with clear terms under Singapore law naming Nanonoble Pte. Ltd., as on the other MiniMax listings (15 of 30). The terms and privacy policy agree that inputs may be used to improve services and that data sits in a United States data centre, with no retention period for audio (8 of 30). No deprecation notice or policy touches the ASR API (10 of 20, for the dated notices elsewhere on the API release notes). Data location stated as the United States and an EU representative named, with third parties only by category (10 of 20). Total 43.", "b": "Closed service with clear terms and MIT SDKs (15). The pricing page, limits pages and security page agree on opt-in training, 7-day batch retention and no storage for realtime (25). The changelog announces behaviour changes in advance, such as the 23 September 2026 switch to waiting polls, but we found no deprecation policy (10). EU1, US1 and AU1 regions documented per endpoint and the service named as Azure-hosted, but no sub-processor list was found (15)." }, "scores": { "a": 63, "b": 76 } }, { "by": 10, "category": "ergonomics", "leads": "speechmatics-stt", "name": "Agent ergonomics", "reasons": { "a": "API reading of the checklist. The default `json` returns only text, duration and a trace ID, with segments and subtitles opt-in (22 of 25). No lists to page. `response_format` and `language` are the output controls (12 of 20). Typed error envelopes with the real HTTP status, an error type and `request_id`, and 402 for an empty balance (18 of 20). Calls are synchronous with no idempotency key (10 of 20). Two fields, a model and a file. No official SDK, and MiniMax's MCP servers don't cover transcription (8 of 15). Total 70.", "b": "API reading of the checklist. Transcripts can be fetched as `txt`, `json-v2` or `srt` (20). The jobs list pages by creation date and limit (20). Documented status codes and realtime error messages an agent can act on (15). No idempotency key on job creation (10). A batch job needs a file and a language. Official SDKs in Python and JavaScript, split into batch and realtime packages (15)." }, "scores": { "a": 70, "b": 80 } } ], "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "MiniMax", "b": "Speechmatics", "name": "Vendor" }, { "a": "no (local only)", "b": "https://eu1.asr.api.speechmatics.com/v2", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "not published", "b": "$0.0025 per minute of audio", "name": "Price for speech-to-text" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "MIT (SDKs)", "name": "Licence" }, { "a": "0", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "none", "b": "2026-10-26", "name": "Last release" }, { "a": "couldn't be read", "b": "no date given", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "2026-05-27", "name": "Privacy policy last updated" }, { "a": "couldn't be read", "b": "not found in the text", "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": "not found in the text", "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": "none", "b": "20 stars, 58k npm/wk, 48k PyPI/wk", "name": "Popularity" }, { "a": "none", "b": "3.5/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "Speechmatics Speech-to-Text scores 67.8 (B) on agent readiness against MiniMax Speech-to-Text's 48.4 (D), and leads in every scored category.", "question": "Which is better for AI agents, MiniMax Speech-to-Text or Speechmatics Speech-to-Text?" }, { "answer": "Both need an API key.", "question": "Do MiniMax Speech-to-Text and Speechmatics Speech-to-Text need an API key?" }, { "answer": "No hosted endpoint is listed for MiniMax Speech-to-Text. Speechmatics Speech-to-Text has a hosted endpoint at https://eu1.asr.api.speechmatics.com/v2.", "question": "Can an agent call MiniMax Speech-to-Text and Speechmatics Speech-to-Text without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": [ "No incidents deducted, where Speechmatics Speech-to-Text loses 3 points for them" ], "goodFor": "Cheap file transcription with diarisation and subtitles, strongest on Chinese and code-switched audio by the vendor's account.", "slug": "minimax-stt", "watchFor": "Files only, up to 500 seconds and 50 MB; live audio input isn't supported" }, { "aheadOn": [ "Reliability, 70 against 47", "Schema \u0026 documentation, 90 against 82", "Agent ergonomics, 80 against 70", "Security \u0026 auth, 65 against 33", "Payments \u0026 pricing, 40 against 20", "Maintenance \u0026 community, 70 against 6", "Transparency \u0026 trust, 76 against 63" ], "also": [ "A hosted endpoint, with nothing to install", "Free to start without a card" ], "goodFor": "Regulated or privacy-sensitive audio, multilingual batch with Melia 1, and voice agents that want speaker-attributed turns.", "slug": "speechmatics-stt", "watchFor": "Enhanced costs $0.38 to $0.40 an hour, above most rivals" } ], "history": { "minimax-stt": null, "speechmatics-stt": [ { "causes": [ "correction" ], "date": "2026-11-01", "delta": 0.6, "from": 67.2, "fromGrade": "B", "to": 67.8, "toGrade": "B" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 67.1, "fromGrade": "B", "to": 67.2, "toGrade": "B" }, { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.2, "from": 67.3, "fromGrade": "B", "to": 67.1, "toGrade": "B" } ] }, "job": { "capability": "speech.stt", "name": "Speech-to-text" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-minimax-stt.json", "title": "Amazon Transcribe vs MiniMax Speech-to-Text", "url": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-minimax-stt" }, { "json": 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"https://www.anchorterminal.com/compare/minimax-stt-vs-openai-speech-to-text.json", "title": "MiniMax Speech-to-Text vs OpenAI Speech to Text", "url": "https://www.anchorterminal.com/compare/minimax-stt-vs-openai-speech-to-text" }, { "json": "https://www.anchorterminal.com/compare/minimax-stt-vs-rev-ai-stt.json", "title": "MiniMax Speech-to-Text vs Rev AI Speech-to-Text API", "url": "https://www.anchorterminal.com/compare/minimax-stt-vs-rev-ai-stt" }, { "json": "https://www.anchorterminal.com/compare/minimax-stt-vs-smallest-pulse-stt.json", "title": "MiniMax Speech-to-Text vs Smallest.ai Pulse STT", "url": "https://www.anchorterminal.com/compare/minimax-stt-vs-smallest-pulse-stt" }, { "json": "https://www.anchorterminal.com/compare/minimax-stt-vs-soniox-stt.json", "title": "MiniMax Speech-to-Text vs Soniox Speech-to-Text", "url": "https://www.anchorterminal.com/compare/minimax-stt-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" }, { "json": "https://www.anchorterminal.com/compare/openai-speech-to-text-vs-speechmatics-stt.json", "title": "OpenAI Speech to Text vs Speechmatics Speech-to-Text", "url": "https://www.anchorterminal.com/compare/openai-speech-to-text-vs-speechmatics-stt" }, { "json": "https://www.anchorterminal.com/compare/rev-ai-stt-vs-speechmatics-stt.json", "title": "Rev AI Speech-to-Text API vs Speechmatics Speech-to-Text", "url": "https://www.anchorterminal.com/compare/rev-ai-stt-vs-speechmatics-stt" }, { "json": "https://www.anchorterminal.com/compare/smallest-pulse-stt-vs-speechmatics-stt.json", "title": "Smallest.ai Pulse STT vs Speechmatics Speech-to-Text", "url": "https://www.anchorterminal.com/compare/smallest-pulse-stt-vs-speechmatics-stt" }, { "json": "https://www.anchorterminal.com/compare/soniox-stt-vs-speechmatics-stt.json", "title": "Soniox Speech-to-Text vs Speechmatics Speech-to-Text", "url": "https://www.anchorterminal.com/compare/soniox-stt-vs-speechmatics-stt" } ], "panel": null, "scores": [ { "by": 23, "edge": "speechmatics-stt", "key": "reliability", "minimax-stt": 47, "name": "Reliability", "speechmatics-stt": 70, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 8, "edge": "speechmatics-stt", "key": "schema", "minimax-stt": 82, "name": "Schema \u0026 documentation", "speechmatics-stt": 90, "weight": 13 }, { "by": 10, "edge": "speechmatics-stt", "key": "ergonomics", "minimax-stt": 70, "name": "Agent ergonomics", "speechmatics-stt": 80, "weight": 13 }, { "by": 32, "edge": "speechmatics-stt", "key": "security", "minimax-stt": 33, "name": "Security \u0026 auth", "speechmatics-stt": 65, "weight": 14 }, { "by": 20, "edge": "speechmatics-stt", "key": "payments", "minimax-stt": 20, "name": "Payments \u0026 pricing", "speechmatics-stt": 40, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 64, "edge": "speechmatics-stt", "key": "maintenance", "minimax-stt": 6, "name": "Maintenance \u0026 community", "speechmatics-stt": 70, "weight": 7 }, { "by": 13, "edge": "speechmatics-stt", "key": "transparency", "minimax-stt": 63, "name": "Transparency \u0026 trust", "speechmatics-stt": 76, "weight": 7 } ], "summary": "Speechmatics Speech-to-Text scores 67.8 (B) on agent readiness against MiniMax Speech-to-Text's 48.4 (D), and leads in every scored category. Both do speech-to-text.", "tasks": [ { "a": "$0.38", "b": "$0.12 to $0.40", "cheaper": "speechmatics-stt", "task": "Transcribe a one-hour meeting", "what": "60 minutes of recorded audio" } ], "tutorials": [], "verdicts": { "minimax-stt": "MiniMax's ASR API has an OpenAPI file, typed error envelopes and a public price of $0.38 an hour, with diarisation and subtitle output. It takes files of up to 500 seconds only, allows 2 concurrent connections, has no free tier or status component, and no dated release.", "speechmatics-stt": "Training is opt-in and real-time audio is not stored. Enhanced transcription costs $0.38 an hour for files and $0.40 for live audio." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/minimax-stt-vs-speechmatics-stt", "json": "https://www.anchorterminal.com/compare/minimax-stt-vs-speechmatics-stt.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/minimax-stt-vs-speechmatics-stt.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/minimax-stt-vs-speechmatics-stt.min.md" }, "markdown": "Speechmatics Speech-to-Text scores 67.8 (B) on agent readiness against MiniMax Speech-to-Text's 48.4 (D), and leads in every scored category. Both do speech-to-text.\n\n- MiniMax Speech-to-Text: grade D, 48.4/100, rank #1114 of 1486. Markdown https://www.anchorterminal.com/tools/minimax-stt.md · JSON https://www.anchorterminal.com/api/v1/tools/minimax-stt.json\n- Speechmatics Speech-to-Text: grade B, 67.8/100, rank #305 of 1486. Markdown https://www.anchorterminal.com/tools/speechmatics-stt.md · JSON https://www.anchorterminal.com/api/v1/tools/speechmatics-stt.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### MiniMax Speech-to-Text (D)\n\nGood for: Cheap file transcription with diarisation and subtitles, strongest on Chinese and code-switched audio by the vendor's account.\n\nAlso in its favour:\n- No incidents deducted, where Speechmatics Speech-to-Text loses 3 points for them\n\nWatch for: Files only, up to 500 seconds and 50 MB; live audio input isn't supported\n\n### Speechmatics Speech-to-Text (B)\n\nGood for: Regulated or privacy-sensitive audio, multilingual batch with Melia 1, and voice agents that want speaker-attributed turns.\n\nAhead on:\n- Reliability, 70 against 47\n- Schema \u0026 documentation, 90 against 82\n- Agent ergonomics, 80 against 70\n- Security \u0026 auth, 65 against 33\n- Payments \u0026 pricing, 40 against 20\n- Maintenance \u0026 community, 70 against 6\n- Transparency \u0026 trust, 76 against 63\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n- Free to start without a card\n\nWatch for: Enhanced costs $0.38 to $0.40 an hour, above most rivals\n\n\n## Why the edge\n\n### Maintenance \u0026 community: Speechmatics Speech-to-Text +64\n\n- MiniMax Speech-to-Text (6): Read as a model. No dated release or change of `asr-1.0` was found on the model or API release notes or the status page (0). No dated ASR entries in the last 90 days (0). Support by email and Discord, not tested (6 of 15). No official SDK, and the MCP servers have no transcription tool (0 of 15). No package to judge (0 of 10). Total 6.\n- Speechmatics Speech-to-Text (70): Model reading of the checklist, deprecation notice and support in place of release counts and issue replies. Changelog entries on 29 October 2026 for Batch SaaS and Agent STT, and speechmatics-rt 1.2.2 tagged on 26 October (30). Far more than three dated entries since 3 August, nine in October on the changelog's first page alone (10 of 10). No deprecation policy, and `operating_point`, the `region` field and the Voice SDK are marked deprecated with no removal date (0 of 10). A public changelog, a support portal with chat and email, and a community channel (10 of 15). SDK issues and reply times couldn't be read (0 of 10). Python packages speechmatics-batch 1.1.0 and speechmatics-rt 1.2.2, and JavaScript batch-client and real-time-client, current (15). A test workflow in the Python SDK, results not seen (5 of 10).\n\n### Security \u0026 auth: Speechmatics Speech-to-Text +32\n\n- MiniMax Speech-to-Text (33): Model reading of the checklist, with training and retention in place of the least-privilege and injection lines. Plain API keys from the console with no scopes found, and the docs say publicly leaked keys may be disabled, as on minimax-voice-cloning (20 of 30). The terms (effective 30 March 2026), as read for minimax-voice-cloning on 4 November, let MiniMax use input and generated content to operate, maintain, develop and improve its services, with no opt-out found, and the privacy policy rules out only training to profile or target consumers (5 of 20). No retention period for uploaded audio or transcripts was found (3 of 15). Each response carries a trace ID, with no audit log found (5 of 15). No security.txt, disclosure policy, bug bounty or certification found, as on the other MiniMax listings (0 of 20). Total 33.\n- Speechmatics Speech-to-Text (65): Model reading of the checklist, with training and retention in place of least-privilege and injection lines. API keys as bearer tokens, with a separate management token for key administration (20). Browser and realtime clients pass temporary keys as `?jwt=` on the WebSocket URL, with a lifetime the caller sets from 60 to 86,400 seconds, so we deduct half (minus 5). Training is opt-in only, and opting in buys a 33 per cent discount (20). Realtime audio isn't stored, batch data is deleted after 7 days or on request (15). A usage reporting service exists, but we found no per-request audit log (10). ISO/IEC 27001:2022 and SOC 2 Type II with a SafeBase trust centre. No security.txt (404 on 1 November), disclosure policy, bug bounty or public advisories found (5).\n\n### Reliability: Speechmatics Speech-to-Text +23\n\n- MiniMax Speech-to-Text (47): Atlassian Statuspage at status.minimax.io with component history, but its components are LLM, Text-to-Speech and Video Generation, with none for speech to text (10 of 20). With no component, the history holds no record for transcription (5). Limits published with numbers, 2 concurrent connections and 30,000 audio seconds a minute (15). 429 is documented as `rate_limit_error`, and the general error code page says to retry later, with no backoff figures or Retry-After (7 of 15). No SLA in the terms or docs (0). `asr-1.0` is called the current public model with no beta label (10). 10 + 5 + 15 + 7 + 0 + 10 = 47.\n- Speechmatics Speech-to-Text (70): Statuspage at status.speechmatics.com with components per region and history (20). Since 3 August, minor incidents only, each touching one region, one mode or a subset of requests. Batch AU slower for 2 hours on 10 August, a subset of Batch EU1, US1 and US2 jobs failing or slow for 56 minutes on 19 August, Realtime 4003 errors in the EU and US for 37 minutes on 4 September, and TLS errors for a subset of US Realtime sessions for about 2 hours on 10 September. The rest were scheduled database maintenance, a portal maintenance and a billing credit error, and nothing was posted after 10 September (20). Limits published with numbers, 10 new batch jobs and 50 status calls a second, 20,000 concurrent jobs, and 2 or 50 realtime sessions by plan (15). Both batch limits return 429 with a reason, but the docs only suggest notifications instead of polling and give no backoff or Retry-After (5). No SLA found for self-serve plans (0). Batch, Realtime and Agent STT on `/v2/agent` are GA (10).\n\n### Payments \u0026 pricing: Speechmatics Speech-to-Text +20\n\n- MiniMax Speech-to-Text (20): No x402, MPP or L402 (0). $0.38 an hour published without a login (20). Speech to text is for paid accounts only (0). A person signs up in a browser and funds a balance (0). Total 20.\n- Speechmatics Speech-to-Text (40): No x402, MPP or L402 (0). Per-hour prices for every model published without a login, with credits at $1 each before discounts (20). $100 credit with no card (20). A person signs up in a browser (0).\n\n### Transparency \u0026 trust: Speechmatics Speech-to-Text +13\n\n- MiniMax Speech-to-Text (63): Closed API with clear terms under Singapore law naming Nanonoble Pte. Ltd., as on the other MiniMax listings (15 of 30). The terms and privacy policy agree that inputs may be used to improve services and that data sits in a United States data centre, with no retention period for audio (8 of 30). No deprecation notice or policy touches the ASR API (10 of 20, for the dated notices elsewhere on the API release notes). Data location stated as the United States and an EU representative named, with third parties only by category (10 of 20). Total 43.\n- Speechmatics Speech-to-Text (76): Closed service with clear terms and MIT SDKs (15). The pricing page, limits pages and security page agree on opt-in training, 7-day batch retention and no storage for realtime (25). The changelog announces behaviour changes in advance, such as the 23 September 2026 switch to waiting polls, but we found no deprecation policy (10). EU1, US1 and AU1 regions documented per endpoint and the service named as Azure-hosted, but no sub-processor list was found (15).\n\n### Agent ergonomics: Speechmatics Speech-to-Text +10\n\n- MiniMax Speech-to-Text (70): API reading of the checklist. The default `json` returns only text, duration and a trace ID, with segments and subtitles opt-in (22 of 25). No lists to page. `response_format` and `language` are the output controls (12 of 20). Typed error envelopes with the real HTTP status, an error type and `request_id`, and 402 for an empty balance (18 of 20). Calls are synchronous with no idempotency key (10 of 20). Two fields, a model and a file. No official SDK, and MiniMax's MCP servers don't cover transcription (8 of 15). Total 70.\n- Speechmatics Speech-to-Text (80): API reading of the checklist. Transcripts can be fetched as `txt`, `json-v2` or `srt` (20). The jobs list pages by creation date and limit (20). Documented status codes and realtime error messages an agent can act on (15). No idempotency key on job creation (10). A batch job needs a file and a language. Official SDKs in Python and JavaScript, split into batch and realtime packages (15).\n\n## Score by category\n\n| Category | Weight | MiniMax Speech-to-Text | Speechmatics Speech-to-Text | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 47 | 70 | Speechmatics Speech-to-Text +23 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 82 | 90 | Speechmatics Speech-to-Text +8 |\n| Agent ergonomics | 13% (16.2 this run) | 70 | 80 | Speechmatics Speech-to-Text +10 |\n| Security \u0026 auth | 14% (17.5 this run) | 33 | 65 | Speechmatics Speech-to-Text +32 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | Speechmatics Speech-to-Text +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 6 | 70 | Speechmatics Speech-to-Text +64 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 63 | 76 | Speechmatics Speech-to-Text +13 |\n| Negative events | ≤15 | 0 | -3 | |\n| **Total** | | **48.4 · D** | **67.8 · B** | |\n\n## Facts side by side\n\n| Fact | MiniMax Speech-to-Text | Speechmatics Speech-to-Text |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | MiniMax | Speechmatics |\n| Hosted endpoint | no (local only) | `https://eu1.asr.api.speechmatics.com/v2` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Pay per use |\n| Price for speech-to-text | not published | $0.0025 per minute of audio |\n| x402 | no | no |\n| Licence | none | MIT (SDKs) |\n| Tools exposed | 0 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | none | 2026-10-26 |\n| Terms last updated | couldn't be read | no date given |\n| Privacy policy last updated | couldn't be read | 2026-05-27 |\n| Customer content may train models | couldn't be read | not found in the text |\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 | not found in the text |\n| Arbitration or class-action waiver | couldn't be read | not found in the text |\n| Popularity | none | 20 stars, 58k npm/wk, 48k PyPI/wk |\n| Agent reviews | none | 3.5/5 (2) |\n\n## What the same task costs\n\n| Task | MiniMax Speech-to-Text | Speechmatics Speech-to-Text |\n| --- | --- | --- |\n| Transcribe a one-hour meeting | $0.38 | $0.12 to $0.40 |\n\n## How the scores have moved\n\n### MiniMax Speech-to-Text\n\nNo score change since it was listed.\n\n### Speechmatics Speech-to-Text\n\n- +0.6 on 1 November 2026: correction\n- +0.1 on 27 October 2026: checklist\n- -0.2 on 8 October 2026: checklist\n\n## Verdicts\n\n**MiniMax Speech-to-Text.** MiniMax's ASR API has an OpenAPI file, typed error envelopes and a public price of $0.38 an hour, with diarisation and subtitle output. It takes files of up to 500 seconds only, allows 2 concurrent connections, has no free tier or status component, and no dated release.\n\n**Speechmatics Speech-to-Text.** Training is opt-in and real-time audio is not stored. Enhanced transcription costs $0.38 an hour for files and $0.40 for live audio.\n\n## Before you call either\n\n### MiniMax Speech-to-Text\n\n1. Split recordings into pieces under 500 seconds before uploading, since longer audio returns 400\n2. Convert to mono 16 kHz or a compressed format to stay under 50 MB\n3. Use `verbose_json` for speakers and timestamps, and `json` only when streaming\n4. Treat 402 `insufficient_balance_error` as final and ask the user to top up\n5. Use `https://api.minimaxi.com` for a mainland China account\n\n### Speechmatics Speech-to-Text\n\n1. Set `\"model\": \"enhanced\"` explicitly. The default is `standard`\n2. Use notifications instead of polling. Polling waits 5 seconds by default since the 23 September 2026 change, and `wait=0` turns that off\n3. Fetch batch transcripts within 7 days. After that the API returns 404 `expired`\n4. Pass a `fetch_data` URL for files over 1 GB\n5. Use `/v2/agent` with `linden-1` for live agents instead of the plain realtime path\n6. Read the Batch API's Swagger file at https://docs.speechmatics.com/batch.yaml before building the multipart `config` field\n\n## Questions\n\n### Which is better for AI agents, MiniMax Speech-to-Text or Speechmatics Speech-to-Text?\n\nSpeechmatics Speech-to-Text scores 67.8 (B) on agent readiness against MiniMax Speech-to-Text's 48.4 (D), and leads in every scored category.\n\n### Do MiniMax Speech-to-Text and Speechmatics Speech-to-Text need an API key?\n\nBoth need an API key.\n\n### Can an agent call MiniMax Speech-to-Text and Speechmatics Speech-to-Text without installing anything?\n\nNo hosted endpoint is listed for MiniMax Speech-to-Text. Speechmatics Speech-to-Text has a hosted endpoint at https://eu1.asr.api.speechmatics.com/v2.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/minimax-stt-vs-speechmatics-stt.json, and with the fewest tokens: https://www.anchorterminal.com/compare/minimax-stt-vs-speechmatics-stt.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"minimax-stt\", \"b\": \"speechmatics-stt\"}`. From a terminal: `anchor compare minimax-stt speechmatics-stt`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/minimax-stt.json and https://www.anchorterminal.com/api/v1/tools/speechmatics-stt.json\n\n## Other comparisons with MiniMax Speech-to-Text or Speechmatics Speech-to-Text\n\n- [Amazon Transcribe vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/amazon-transcribe-vs-minimax-stt.md)\n- [Amazon Transcribe vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/amazon-transcribe-vs-speechmatics-stt.md)\n- [AssemblyAI Speech-to-Text (Universal) vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/assemblyai-stt-vs-minimax-stt.md)\n- [AssemblyAI Speech-to-Text (Universal) vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/assemblyai-stt-vs-speechmatics-stt.md)\n- [Azure AI Speech speech-to-text vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-minimax-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- [Cartesia Ink vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-minimax-stt.md)\n- [Cartesia Ink vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-speechmatics-stt.md)\n- [Deepgram Speech-to-Text (Nova-3, Flux) vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/deepgram-stt-vs-minimax-stt.md)\n- [Deepgram Speech-to-Text (Nova-3, Flux) vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/deepgram-stt-vs-speechmatics-stt.md)\n- [ElevenLabs Scribe Speech to Text API vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-minimax-stt.md)\n- [ElevenLabs Scribe Speech to Text API vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-speechmatics-stt.md)\n- [Giggy Speech to Text vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/giggy-stt-vs-minimax-stt.md)\n- [Giggy Speech to Text vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/giggy-stt-vs-speechmatics-stt.md)\n- [Gladia Speech-to-Text API + MCP vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/gladia-stt-vs-minimax-stt.md)\n- [Gladia Speech-to-Text API + MCP vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/gladia-stt-vs-speechmatics-stt.md)\n- [Google Cloud Speech-to-Text vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/google-speech-to-text-vs-minimax-stt.md)\n- [Google Cloud Speech-to-Text vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/google-speech-to-text-vs-speechmatics-stt.md)\n- [Groq Speech-to-Text vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/groq-speech-to-text-vs-minimax-stt.md)\n- [Groq Speech-to-Text vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/groq-speech-to-text-vs-speechmatics-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 Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/ibm-watson-stt-vs-speechmatics-stt.md)\n- [Inworld STT vs MiniMax Speech-to-Text](https://www.anchorterminal.com/compare/inworld-stt-vs-minimax-stt.md)\n- [Inworld STT vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/inworld-stt-vs-speechmatics-stt.md)\n- [MiniMax Speech-to-Text vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/minimax-stt-vs-mistral-voxtral-transcribe.md)\n- [MiniMax Speech-to-Text vs OpenAI Speech to Text](https://www.anchorterminal.com/compare/minimax-stt-vs-openai-speech-to-text.md)\n- [MiniMax Speech-to-Text vs Rev AI Speech-to-Text API](https://www.anchorterminal.com/compare/minimax-stt-vs-rev-ai-stt.md)\n- [MiniMax Speech-to-Text vs Smallest.ai Pulse STT](https://www.anchorterminal.com/compare/minimax-stt-vs-smallest-pulse-stt.md)\n- [MiniMax Speech-to-Text vs Soniox Speech-to-Text](https://www.anchorterminal.com/compare/minimax-stt-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- [OpenAI Speech to Text vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/openai-speech-to-text-vs-speechmatics-stt.md)\n- [Rev AI Speech-to-Text API vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/rev-ai-stt-vs-speechmatics-stt.md)\n- [Smallest.ai Pulse STT vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/smallest-pulse-stt-vs-speechmatics-stt.md)\n- [Soniox Speech-to-Text vs Speechmatics Speech-to-Text](https://www.anchorterminal.com/compare/soniox-stt-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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