{
  "data": {
    "a": {
      "slug": "cartesia-ink-stt",
      "name": "Cartesia Ink",
      "vendor": "Cartesia",
      "vendorUrl": "https://www.cartesia.ai",
      "kind": "model",
      "category": "speech-to-text",
      "summary": "Cartesia's hosted speech-to-text API. Ink 2 transcribes live audio in five languages over a WebSocket with built-in turn detection, and the older Ink Whisper model transcribes uploaded files in about 100 languages.",
      "url": "https://www.anchorterminal.com/tools/cartesia-ink-stt",
      "markdownUrl": "https://www.anchorterminal.com/tools/cartesia-ink-stt.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cartesia-ink-stt.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cartesia-ink-stt.json",
      "repo": "https://github.com/cartesia-ai/cartesia-python",
      "license": "Proprietary hosted service under the Cartesia Terms of Service. The Python and JavaScript SDKs are Apache-2.0",
      "transports": [
        "http",
        "websocket",
        "streamable-http"
      ],
      "remoteUrl": "https://api.cartesia.ai",
      "packages": [
        {
          "registry": "pypi",
          "name": "cartesia"
        },
        {
          "registry": "npm",
          "name": "@cartesia/cartesia-js"
        },
        {
          "registry": "pypi",
          "name": "cartesia-mcp"
        }
      ],
      "auth": "api-key",
      "authNotes": "Self-serve API key (`sk_car_...`) from the Playground at play.cartesia.ai/keys, sent as `Authorization: Bearer` or `X-API-Key`. Browser clients use an access token with an `stt` grant, valid for at most one hour, passed as the `access_token` query parameter on WebSockets. Usage and key-metadata endpoints need a separate admin key (https://docs.cartesia.ai/use-the-api/api-conventions).",
      "pricing": "freemium",
      "pricingNotes": "Billed in credits. `ink-2` costs 3 credits a second of audio on both realtime endpoints, silence included. `ink-whisper` costs 1 credit a second in realtime and 1 credit per 2 seconds in batch (https://docs.cartesia.ai/pricing). Plans are Free ($0, 20,000 credits a month), Pro ($5, 100,000), Startup ($49, 1.25 million) and Scale ($299, 8 million), so an agent's owner can start without a contract. Commercial use starts at Pro (https://www.cartesia.ai/pricing).",
      "priceSummary": "Freemium",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs index, the pricing pages or the STT reference (checked 2026-10-09).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 134,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-09"
      },
      "docsUrl": "https://docs.cartesia.ai/use-the-api/stt/compare-endpoints",
      "llmsTxt": "https://docs.cartesia.ai/llms.txt",
      "openapi": "https://docs.cartesia.ai/latest.yml",
      "capabilities": [
        "speech.stt",
        "speech.streaming",
        "speech.batch",
        "speech.languages"
      ],
      "tags": [
        "official",
        "hosted",
        "model",
        "closed-source",
        "streaming",
        "batch",
        "free-tier",
        "python",
        "typescript",
        "openapi",
        "llms-txt",
        "mcp",
        "status-page",
        "security-txt",
        "soc2",
        "enterprise"
      ],
      "lastRelease": "2026-09-17",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 67.9,
        "grade": "B",
        "agentReady": false,
        "rank": 238,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 9,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 74,
          "maintenance": 85,
          "payments": 35,
          "reliability": 73,
          "schema": 89,
          "security": 52,
          "transparency": 67
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-09"
        },
        "negative": 0,
        "verdict": "Ink 2 streams transcripts with turn detection built into the model, documented by an AsyncAPI file with typed ranges and structured errors. The terms, last revised 14 June 2024, let Cartesia train on inputs and outputs unless the customer opts out, and zero data retention is an Enterprise setting. Ink 2 has no batch endpoint and no diarisation.",
        "bestFor": "Suited to voice agents that need turn detection and transcription from one model in English, French, Hindi, Japanese or Spanish, and to teams already using Cartesia text-to-speech.",
        "strengths": [
          "`/stt/turns/websocket` emits `turn.start`, `turn.update`, `turn.eager_end`, `turn.resume` and `turn.end`, so no separate voice activity detector is needed",
          "OpenAPI and AsyncAPI files, llms.txt and Markdown twins of every docs page, with enums and numeric ranges on the WebSocket parameters",
          "Structured errors on `Cartesia-Version` 2026-03-01 and later, with `error_code`, `title`, `message`, `request_id` and an optional `doc_url`",
          "Short-lived access tokens (at most one hour) carry an `stt` grant, and admin keys are a separate key type from standard keys",
          "The status page lists Speech to Text in four regions, at 99.97% (US), 99.994% (EU and APAC) and 100% (AU) for July to October 2026"
        ],
        "weaknesses": [
          "The terms let Cartesia train models on inputs and outputs unless otherwise agreed. Opting out is a form in the Playground's data controls",
          "Zero data retention is an Enterprise plan setting, and no retention period for other plans was found in the terms, privacy policy or docs",
          "`ink-2` supports English, French, Hindi, Japanese and Spanish only and has no batch endpoint. `POST /stt` accepts `ink-whisper` only",
          "No diarisation or speaker labels in the reviewed documentation, and realtime input is raw mono PCM with `encoding` and `sample_rate` required",
          "The terms of 14 June 2024 forbid automation software (bots) and any robot or scraper that accesses the Services to collect data, which matters before any probe is run",
          "No SLA was found, and a 429 for exceeding the concurrency limit is documented without a `Retry-After` header or backoff guidance"
        ],
        "agentNotes": [
          "Use `wss://api.cartesia.ai/stt/turns/websocket` with `model=ink-2`, `encoding`, `sample_rate` and `cartesia_version=2026-08-14`. All four are required.",
          "Send raw mono audio in chunks of about 100 ms at the speed it was spoken. Pushing a whole file into the socket can return an internal server error.",
          "Read the final text from `turn.end` only. `transcript` is cumulative within a turn, so joining `turn.update` events duplicates text.",
          "Send `{\"type\": \"close\"}` after the last audio and keep reading until the server closes the socket, or the buffered tail is lost.",
          "Check `encoding` and `sample_rate` against the source before sending. The docs say the server might not return an error when they are wrong."
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 67.9
          }
        ],
        "editorialScores": {
          "ergonomics": 74,
          "maintenance": 85,
          "payments": 35,
          "reliability": 73,
          "schema": 89,
          "security": 52,
          "transparency": 49
        },
        "provenanceScore": 84
      },
      "connect": {
        "install": "pip install 'cartesia[websockets]'   # or: npm install @cartesia/cartesia-js",
        "claudeCode": "claude mcp add --transport http --scope user cartesia https://mcp.cartesia.ai/mcp"
      },
      "letme": {
        "capability": "https://letme.dev/speech.stt",
        "tool": "https://letme.dev/cartesia-ink-stt"
      },
      "sameCompany": [
        "cartesia-tts",
        "cartesia-voice-cloning"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "Ink 2 realtime, Scale plan",
          "unit": "audio-minute",
          "usd": 0.0067,
          "note": "180 credits a minute at $299 for 8M credits. Cartesia quotes $0.39 an hour"
        },
        {
          "item": "Ink 2 realtime, Startup plan",
          "unit": "audio-minute",
          "usd": 0.0071,
          "note": "180 credits a minute at $49 for 1.25M credits"
        },
        {
          "item": "Ink 2 realtime, Pro plan",
          "unit": "audio-minute",
          "usd": 0.009,
          "note": "180 credits a minute at $5 for 100,000 credits"
        },
        {
          "item": "Ink Whisper realtime, Scale plan",
          "unit": "audio-minute",
          "usd": 0.0022,
          "note": "60 credits a minute at $299 for 8M credits"
        },
        {
          "item": "Ink Whisper batch, Scale plan",
          "unit": "audio-minute",
          "usd": 0.0011,
          "note": "30 credits a minute at $299 for 8M credits"
        }
      ],
      "provenance": {
        "legalEntity": "Cartesia AI, Inc.",
        "domain": "cartesia.ai",
        "domainRegistered": "2023-05-10",
        "endpointOnVendorDomain": true,
        "terms": "https://www.cartesia.ai/legal/terms",
        "privacy": "https://www.cartesia.ai/legal/privacy",
        "statusPage": "https://status.cartesia.ai",
        "changelog": "https://docs.cartesia.ai/changelog/2026",
        "securityTxt": "valid",
        "checked": "2026-10-09",
        "score": 84
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/cartesia-ink-stt.json",
      "live": {
        "slug": "cartesia-ink-stt",
        "probe": {
          "target": "https://api.cartesia.ai",
          "method": "get",
          "lastAt": "2026-10-10T03:07:00.809061285Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 126,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 69,
          "p95ms24h": 203,
          "samples24h": 117,
          "samples30d": 117,
          "days": [
            {
              "date": "2026-10-09",
              "probes": 85,
              "ok": 85
            },
            {
              "date": "2026-10-10",
              "probes": 32,
              "ok": 32
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.cartesia.ai",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-10T03:01:52.995710279Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "cartesia-ai/cartesia-python",
            "version": "v4.2.0",
            "released": "2026-09-02",
            "seenAt": "2026-10-09T16:44:27.669680758Z"
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            "registry": "npm",
            "name": "@cartesia/cartesia-js",
            "version": "4.2.0",
            "seenAt": "2026-10-09T16:44:25.845737197Z"
          },
          {
            "registry": "pypi",
            "name": "cartesia",
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            "released": "2026-09-02",
            "seenAt": "2026-10-09T16:44:25.659263821Z"
          },
          {
            "registry": "pypi",
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            "version": "0.26.1",
            "released": "2026-10-08",
            "seenAt": "2026-10-09T16:44:26.977578193Z"
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        ],
        "githubStars": 134,
        "npmWeekly": 79696,
        "pypiWeekly": 205864,
        "pages": [
          {
            "url": "https://docs.cartesia.ai/changelog/2026",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-09T18:36:45.184290806Z",
            "changedAt": "2026-10-07T18:04:49.25388057Z",
            "fingerprint": "405fadad924b"
          },
          {
            "url": "https://docs.cartesia.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-09T18:36:47.532132362Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "379a41a8bcf3"
          },
          {
            "url": "https://www.cartesia.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-09T18:48:59.764022121Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "12bd9269bdef"
          },
          {
            "url": "https://www.cartesia.ai/legal/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-09T18:48:55.522982064Z",
            "changedAt": "2026-10-08T18:26:54.204830291Z",
            "fingerprint": "90fbd63881e5"
          },
          {
            "url": "https://www.cartesia.ai/legal/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-09T18:48:57.753461207Z",
            "changedAt": "2026-10-08T18:26:56.591248396Z",
            "fingerprint": "2153bed03a23"
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        ],
        "updatedAt": "2026-10-10T03:07:00.809061285Z"
      }
    },
    "answer": "ElevenLabs Scribe Speech to Text API scores 68.9 (B) on agent readiness against Cartesia Ink's 67.9 (B), and leads in 5 of 7 scored categories. Cartesia Ink leads on maintenance \u0026 community.",
    "b": {
      "slug": "elevenlabs-scribe",
      "name": "ElevenLabs Scribe Speech to Text API",
      "vendor": "ElevenLabs",
      "vendorUrl": "https://elevenlabs.io",
      "kind": "model",
      "category": "speech-to-text",
      "summary": "ElevenLabs' speech-to-text service for audio transcription.",
      "url": "https://www.anchorterminal.com/tools/elevenlabs-scribe",
      "markdownUrl": "https://www.anchorterminal.com/tools/elevenlabs-scribe.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/elevenlabs-scribe.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/elevenlabs-scribe.json",
      "repo": "https://github.com/elevenlabs/elevenlabs-python",
      "license": "MIT (SDKs)",
      "transports": [
        "http",
        "stdio"
      ],
      "remoteUrl": "https://api.elevenlabs.io/v1",
      "packages": [
        {
          "registry": "npm",
          "name": "@elevenlabs/elevenlabs-js"
        },
        {
          "registry": "pypi",
          "name": "elevenlabs"
        },
        {
          "registry": "pypi",
          "name": "elevenlabs-mcp"
        }
      ],
      "auth": "api-key",
      "authNotes": "`xi-api-key` header on `POST /v1/speech-to-text` and the realtime WebSocket. The hosted MCP server doesn't expose transcription. Only the deprecated local `elevenlabs-mcp` server has a `speech_to_text` tool.",
      "pricing": "freemium",
      "pricingNotes": "Scribe v2 and Scribe v2 Medical cost $0.22 an hour of audio, Scribe v2 Realtime $0.39 an hour. Entity detection adds $0.07 an hour and keyterm prompting $0.05 an hour. Silence counts. Free includes about 4.5 hours of batch audio a month, Starter $6 27 hours, Creator $22 100 hours, Pro $99 450 hours, Scale $299 1,359 hours and Business $990 4,500 hours (https://elevenlabs.io/pricing/api).",
      "priceSummary": "Freemium",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402 or machine payment in the docs or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 3122,
        "npmWeekly": 1063065,
        "pypiWeekly": 2223099,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://elevenlabs.io/docs/overview/capabilities/speech-to-text",
      "llmsTxt": "https://elevenlabs.io/docs/llms.txt",
      "openapi": "https://api.elevenlabs.io/openapi.json",
      "capabilities": [
        "speech.stt",
        "speech.streaming",
        "speech.batch",
        "speech.diarisation",
        "speech.languages"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "closed-source",
        "python",
        "typescript",
        "openapi",
        "llms-txt",
        "streaming",
        "batch",
        "webhooks",
        "async-jobs",
        "enterprise"
      ],
      "lastRelease": "2026-09-28",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68.9,
        "grade": "B",
        "agentReady": false,
        "rank": 200,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 8,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 75,
          "maintenance": 75,
          "payments": 40,
          "reliability": 70,
          "schema": 95,
          "security": 55,
          "transparency": 70
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "$0.22 an hour for batch with 90+ languages and diarisation to 32 speakers. Audio may be used for training unless the account opts out, and the opt-out isn't retroactive.",
        "bestFor": "Batch transcription where diarisation, entity detection and keyterms matter, and for teams already on ElevenLabs for speech.",
        "strengths": [
          "$0.22 an hour for batch with 90+ languages and diarisation to 32 speakers",
          "Keys restricted by endpoint, capped by credits and set to expire",
          "429 codes named in the error reference with exponential backoff guidance",
          "Files up to 3 GB and 10 hours, or a `source_url`",
          "OpenAPI file and an llms.txt with Markdown pages"
        ],
        "weaknesses": [
          "Audio may be used for training unless the account opts out, and the opt-out isn't retroactive",
          "Speech-to-text data is retained by default, and zero retention needs Enterprise",
          "STT request failures for 94 minutes on 29 September 2026, plus latency incidents on 26 August, 4 September and 28 September",
          "Realtime costs $0.39 an hour, nearly double batch",
          "No self-serve SLA found"
        ],
        "agentNotes": [
          "Create a key restricted to speech-to-text with a credit quota and an expiry",
          "Use `source_url` for hosted files instead of downloading and re-uploading",
          "Set `webhook=true` for long files so the call doesn't block",
          "Back off exponentially on any of the three 429 codes",
          "Opt out under Data use before sending customer audio. It only covers later uploads"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 68.9
          }
        ],
        "editorialScores": {
          "ergonomics": 75,
          "maintenance": 75,
          "payments": 40,
          "reliability": 70,
          "schema": 95,
          "security": 55,
          "transparency": 50
        },
        "provenanceScore": 89
      },
      "connect": {
        "http": "curl -X POST https://api.elevenlabs.io/v1/speech-to-text -H \"xi-api-key: $ELEVENLABS_API_KEY\" \\\n  -F model_id=scribe_v2 -F diarize=true -F file=@call.mp3",
        "config": {
          "mcpServers": {
            "elevenlabs": {
              "args": [
                "elevenlabs-mcp"
              ],
              "command": "uvx",
              "env": {
                "ELEVENLABS_API_KEY": "${ELEVENLABS_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/speech.stt",
        "tool": "https://letme.dev/elevenlabs-scribe"
      },
      "sameCompany": [
        "elevenlabs-music",
        "elevenlabs-tts",
        "elevenlabs-agents",
        "elevenlabs-voice-cloning"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "Scribe v2 batch",
          "unit": "audio-minute",
          "usd": 0.0037,
          "note": "published as $0.22 an hour, also Scribe v2 Medical"
        },
        {
          "item": "Scribe v2 Realtime",
          "unit": "audio-minute",
          "usd": 0.0065,
          "note": "published as $0.39 an hour"
        },
        {
          "item": "Entity detection add-on",
          "unit": "audio-minute",
          "usd": 0.0012,
          "note": "published as $0.07 an hour"
        },
        {
          "item": "Keyterm prompting add-on",
          "unit": "audio-minute",
          "usd": 0.0008,
          "note": "published as $0.05 an hour"
        }
      ],
      "provenance": {
        "legalEntity": "Eleven Labs Inc.",
        "domain": "elevenlabs.io",
        "domainRegistered": "2021-12-15",
        "endpointOnVendorDomain": true,
        "terms": "https://elevenlabs.io/terms-of-use",
        "privacy": "https://elevenlabs.io/privacy-policy",
        "statusPage": "https://status.elevenlabs.io",
        "changelog": "https://elevenlabs.io/docs/changelog",
        "securityTxt": "valid",
        "checked": "2026-09-30",
        "score": 89
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/elevenlabs-scribe.json",
      "live": {
        "slug": "elevenlabs-scribe",
        "probe": {
          "target": "https://api.elevenlabs.io/v1",
          "method": "get",
          "lastAt": "2026-10-10T03:07:04.594567183Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 119,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 119,
          "p95ms24h": 192,
          "samples24h": 249,
          "samples30d": 2468,
          "days": [
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              "date": "2026-09-30",
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            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 272
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            {
              "date": "2026-10-08",
              "probes": 268,
              "ok": 268
            },
            {
              "date": "2026-10-09",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-10",
              "probes": 32,
              "ok": 32
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.elevenlabs.io",
          "indicator": "none",
          "summary": "All Systems Operational",
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        "name": "Kind"
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        "name": "Licence"
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        "name": "Read-only variant documented"
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        "a": "yes, with an opt-out",
        "b": "yes, with an opt-out",
        "name": "Customer content may train models"
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        "a": "yes",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
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        "a": "yes",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
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      {
        "a": "134 stars",
        "b": "3.1k stars, 1.1M npm/wk, 2.2M PyPI/wk",
        "name": "Popularity"
      },
      {
        "a": "none",
        "b": "3.5/5 (2)",
        "name": "Agent reviews"
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    ],
    "faq": [
      {
        "answer": "ElevenLabs Scribe Speech to Text API scores 68.9 (B) on agent readiness against Cartesia Ink's 67.9 (B), and leads in 5 of 7 scored categories. Cartesia Ink leads on maintenance \u0026 community.",
        "question": "Which is better for AI agents, Cartesia Ink or ElevenLabs Scribe Speech to Text API?"
      },
      {
        "answer": "Both need an API key.",
        "question": "Do Cartesia Ink and ElevenLabs Scribe Speech to Text API need an API key?"
      },
      {
        "answer": "Yes. Cartesia Ink has a hosted endpoint at https://api.cartesia.ai and ElevenLabs Scribe Speech to Text API at https://api.elevenlabs.io/v1.",
        "question": "Can an agent call Cartesia Ink and ElevenLabs Scribe Speech to Text API without installing anything?"
      }
    ],
    "goodFor": [
      {
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          "Maintenance \u0026 community, 85 against 75"
        ],
        "also": null,
        "goodFor": "Suited to voice agents that need turn detection and transcription from one model in English, French, Hindi, Japanese or Spanish, and to teams already using Cartesia text-to-speech.",
        "slug": "cartesia-ink-stt",
        "watchFor": "The terms let Cartesia train models on inputs and outputs unless otherwise agreed. Opting out is a form in the Playground's data controls"
      },
      {
        "aheadOn": [
          "Schema \u0026 documentation, 95 against 89",
          "Payments \u0026 pricing, 40 against 35"
        ],
        "also": [
          "Runs on your own machine"
        ],
        "goodFor": "Batch transcription where diarisation, entity detection and keyterms matter, and for teams already on ElevenLabs for speech.",
        "slug": "elevenlabs-scribe",
        "watchFor": "Audio may be used for training unless the account opts out, and the opt-out isn't retroactive"
      }
    ],
    "job": {
      "capability": "speech.stt",
      "name": "Speech-to-text"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-cartesia-ink-stt.json",
        "title": "Amazon Transcribe vs Cartesia Ink",
        "url": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-cartesia-ink-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-elevenlabs-scribe.json",
        "title": "Amazon Transcribe vs ElevenLabs Scribe Speech to Text API",
        "url": "https://www.anchorterminal.com/compare/amazon-transcribe-vs-elevenlabs-scribe"
      },
      {
        "json": "https://www.anchorterminal.com/compare/assemblyai-stt-vs-cartesia-ink-stt.json",
        "title": "AssemblyAI Speech-to-Text (Universal) vs Cartesia Ink",
        "url": "https://www.anchorterminal.com/compare/assemblyai-stt-vs-cartesia-ink-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/assemblyai-stt-vs-elevenlabs-scribe.json",
        "title": "AssemblyAI Speech-to-Text (Universal) vs ElevenLabs Scribe Speech to Text API",
        "url": "https://www.anchorterminal.com/compare/assemblyai-stt-vs-elevenlabs-scribe"
      },
      {
        "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-cartesia-ink-stt.json",
        "title": "Azure AI Speech speech-to-text vs Cartesia Ink",
        "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-cartesia-ink-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-elevenlabs-scribe.json",
        "title": "Azure AI Speech speech-to-text vs ElevenLabs Scribe Speech to Text API",
        "url": "https://www.anchorterminal.com/compare/azure-speech-to-text-vs-elevenlabs-scribe"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-deepgram-stt.json",
        "title": "Cartesia Ink vs Deepgram Speech-to-Text (Nova-3, Flux)",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-deepgram-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-gladia-stt.json",
        "title": "Cartesia Ink vs Gladia Speech-to-Text API + MCP",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-gladia-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-google-speech-to-text.json",
        "title": "Cartesia Ink vs Google Cloud Speech-to-Text",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-google-speech-to-text"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-groq-speech-to-text.json",
        "title": "Cartesia Ink vs Groq Speech-to-Text",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-groq-speech-to-text"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-mistral-voxtral-transcribe.json",
        "title": "Cartesia Ink vs Mistral Voxtral Transcribe",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-mistral-voxtral-transcribe"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-openai-speech-to-text.json",
        "title": "Cartesia Ink vs OpenAI Speech to Text",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-openai-speech-to-text"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-rev-ai-stt.json",
        "title": "Cartesia Ink vs Rev AI Speech-to-Text API",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-rev-ai-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-soniox-stt.json",
        "title": "Cartesia Ink vs Soniox Speech-to-Text",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-soniox-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-speechmatics-stt.json",
        "title": "Cartesia Ink vs Speechmatics Speech-to-Text",
        "url": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-speechmatics-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deepgram-stt-vs-elevenlabs-scribe.json",
        "title": "Deepgram Speech-to-Text (Nova-3, Flux) vs ElevenLabs Scribe Speech to Text API",
        "url": "https://www.anchorterminal.com/compare/deepgram-stt-vs-elevenlabs-scribe"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-gladia-stt.json",
        "title": "ElevenLabs Scribe Speech to Text API vs Gladia Speech-to-Text API + MCP",
        "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-gladia-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-google-speech-to-text.json",
        "title": "ElevenLabs Scribe Speech to Text API vs Google Cloud Speech-to-Text",
        "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-google-speech-to-text"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-groq-speech-to-text.json",
        "title": "ElevenLabs Scribe Speech to Text API vs Groq Speech-to-Text",
        "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-groq-speech-to-text"
      },
      {
        "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/elevenlabs-scribe-vs-openai-speech-to-text.json",
        "title": "ElevenLabs Scribe Speech to Text API vs OpenAI Speech to Text",
        "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-openai-speech-to-text"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-rev-ai-stt.json",
        "title": "ElevenLabs Scribe Speech to Text API vs Rev AI Speech-to-Text API",
        "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-rev-ai-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-soniox-stt.json",
        "title": "ElevenLabs Scribe Speech to Text API vs Soniox Speech-to-Text",
        "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-soniox-stt"
      },
      {
        "json": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-speechmatics-stt.json",
        "title": "ElevenLabs Scribe Speech to Text API vs Speechmatics Speech-to-Text",
        "url": "https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-speechmatics-stt"
      }
    ],
    "scores": [
      {
        "by": 3,
        "cartesia-ink-stt": 73,
        "edge": "cartesia-ink-stt",
        "elevenlabs-scribe": 70,
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 6,
        "cartesia-ink-stt": 89,
        "edge": "elevenlabs-scribe",
        "elevenlabs-scribe": 95,
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "by": 1,
        "cartesia-ink-stt": 74,
        "edge": "elevenlabs-scribe",
        "elevenlabs-scribe": 75,
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "by": 3,
        "cartesia-ink-stt": 52,
        "edge": "elevenlabs-scribe",
        "elevenlabs-scribe": 55,
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "by": 5,
        "cartesia-ink-stt": 35,
        "edge": "elevenlabs-scribe",
        "elevenlabs-scribe": 40,
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 10,
        "cartesia-ink-stt": 85,
        "edge": "cartesia-ink-stt",
        "elevenlabs-scribe": 75,
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "by": 3,
        "cartesia-ink-stt": 67,
        "edge": "elevenlabs-scribe",
        "elevenlabs-scribe": 70,
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "ElevenLabs Scribe Speech to Text API scores 68.9 (B) on agent readiness against Cartesia Ink's 67.9 (B), and leads in 5 of 7 scored categories. Cartesia Ink leads on maintenance \u0026 community. Both do speech-to-text.",
    "verdicts": {
      "cartesia-ink-stt": "Ink 2 streams transcripts with turn detection built into the model, documented by an AsyncAPI file with typed ranges and structured errors. The terms, last revised 14 June 2024, let Cartesia train on inputs and outputs unless the customer opts out, and zero data retention is an Enterprise setting. Ink 2 has no batch endpoint and no diarisation.",
      "elevenlabs-scribe": "$0.22 an hour for batch with 90+ languages and diarisation to 32 speakers. Audio may be used for training unless the account opts out, and the opt-out isn't retroactive."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-elevenlabs-scribe",
    "json": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-elevenlabs-scribe.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-elevenlabs-scribe.md",
    "slim": "https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-elevenlabs-scribe.min.md"
  },
  "markdown": "ElevenLabs Scribe Speech to Text API scores 68.9 (B) on agent readiness against Cartesia Ink's 67.9 (B), and leads in 5 of 7 scored categories. Cartesia Ink leads on maintenance \u0026 community. Both do speech-to-text.\n\n- Cartesia Ink: grade B, 67.9/100, rank #238 of 950. Markdown https://www.anchorterminal.com/tools/cartesia-ink-stt.md · JSON https://www.anchorterminal.com/api/v1/tools/cartesia-ink-stt.json\n- ElevenLabs Scribe Speech to Text API: grade B, 68.9/100, rank #200 of 950. Markdown https://www.anchorterminal.com/tools/elevenlabs-scribe.md · JSON https://www.anchorterminal.com/api/v1/tools/elevenlabs-scribe.json\n- Best speech-to-text APIs for AI agents: https://www.anchorterminal.com/best/speech-to-text/index.md\n- All 91 stt comparisons: https://www.anchorterminal.com/compare/speech-to-text/index.md\n\n## Which one, for what\n\n### Cartesia Ink (B)\n\nGood for: Suited to voice agents that need turn detection and transcription from one model in English, French, Hindi, Japanese or Spanish, and to teams already using Cartesia text-to-speech.\n\nAhead on:\n- Maintenance \u0026 community, 85 against 75\n\nWatch for: The terms let Cartesia train models on inputs and outputs unless otherwise agreed. Opting out is a form in the Playground's data controls\n\n### ElevenLabs Scribe Speech to Text API (B)\n\nGood for: Batch transcription where diarisation, entity detection and keyterms matter, and for teams already on ElevenLabs for speech.\n\nAhead on:\n- Schema \u0026 documentation, 95 against 89\n- Payments \u0026 pricing, 40 against 35\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: Audio may be used for training unless the account opts out, and the opt-out isn't retroactive\n\n\n## Score by category\n\n| Category | Weight | Cartesia Ink | ElevenLabs Scribe Speech to Text API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 73 | 70 | Cartesia Ink +3 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 89 | 95 | ElevenLabs Scribe Speech to Text API +6 |\n| Agent ergonomics | 13% (16.2 this run) | 74 | 75 | ElevenLabs Scribe Speech to Text API +1 |\n| Security \u0026 auth | 14% (17.5 this run) | 52 | 55 | ElevenLabs Scribe Speech to Text API +3 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 40 | ElevenLabs Scribe Speech to Text API +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 75 | Cartesia Ink +10 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 67 | 70 | ElevenLabs Scribe Speech to Text API +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **67.9 · B** | **68.9 · B** | |\n\n## Facts side by side\n\n| Fact | Cartesia Ink | ElevenLabs Scribe Speech to Text API |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Cartesia | ElevenLabs |\n| Hosted endpoint | `https://api.cartesia.ai` | `https://api.elevenlabs.io/v1` |\n| Transports | HTTP, websocket, Streamable HTTP | HTTP, stdio |\n| Auth | API key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Proprietary hosted service under the Cartesia Terms of Service. The Python and JavaScript SDKs are Apache-2.0 | MIT (SDKs) |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-17 | 2026-09-28 |\n| Terms last updated | 2024-06-14 | 2026-03-31 |\n| Privacy policy last updated | 2024-06-14 | 2026-05-20 |\n| Customer content may train models | yes, with an opt-out | yes, with an opt-out |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 134 stars | 3.1k stars, 1.1M npm/wk, 2.2M PyPI/wk |\n| Agent reviews | none | 3.5/5 (2) |\n\n## Verdicts\n\n**Cartesia Ink.** Ink 2 streams transcripts with turn detection built into the model, documented by an AsyncAPI file with typed ranges and structured errors. The terms, last revised 14 June 2024, let Cartesia train on inputs and outputs unless the customer opts out, and zero data retention is an Enterprise setting. Ink 2 has no batch endpoint and no diarisation.\n\n**ElevenLabs Scribe Speech to Text API.** $0.22 an hour for batch with 90+ languages and diarisation to 32 speakers. Audio may be used for training unless the account opts out, and the opt-out isn't retroactive.\n\n## Before you call either\n\n### Cartesia Ink\n\n1. Use `wss://api.cartesia.ai/stt/turns/websocket` with `model=ink-2`, `encoding`, `sample_rate` and `cartesia_version=2026-08-14`. All four are required.\n2. Send raw mono audio in chunks of about 100 ms at the speed it was spoken. Pushing a whole file into the socket can return an internal server error.\n3. Read the final text from `turn.end` only. `transcript` is cumulative within a turn, so joining `turn.update` events duplicates text.\n4. Send `{\"type\": \"close\"}` after the last audio and keep reading until the server closes the socket, or the buffered tail is lost.\n5. Check `encoding` and `sample_rate` against the source before sending. The docs say the server might not return an error when they are wrong.\n\n### ElevenLabs Scribe Speech to Text API\n\n1. Create a key restricted to speech-to-text with a credit quota and an expiry\n2. Use `source_url` for hosted files instead of downloading and re-uploading\n3. Set `webhook=true` for long files so the call doesn't block\n4. Back off exponentially on any of the three 429 codes\n5. Opt out under Data use before sending customer audio. It only covers later uploads\n\n## Questions\n\n### Which is better for AI agents, Cartesia Ink or ElevenLabs Scribe Speech to Text API?\n\nElevenLabs Scribe Speech to Text API scores 68.9 (B) on agent readiness against Cartesia Ink's 67.9 (B), and leads in 5 of 7 scored categories. Cartesia Ink leads on maintenance \u0026 community.\n\n### Do Cartesia Ink and ElevenLabs Scribe Speech to Text API need an API key?\n\nBoth need an API key.\n\n### Can an agent call Cartesia Ink and ElevenLabs Scribe Speech to Text API without installing anything?\n\nYes. Cartesia Ink has a hosted endpoint at https://api.cartesia.ai and ElevenLabs Scribe Speech to Text API at https://api.elevenlabs.io/v1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-elevenlabs-scribe.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-elevenlabs-scribe.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"cartesia-ink-stt\", \"b\": \"elevenlabs-scribe\"}`. From a terminal: `anchor compare cartesia-ink-stt elevenlabs-scribe`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cartesia-ink-stt.json and https://www.anchorterminal.com/api/v1/tools/elevenlabs-scribe.json\n\n## Other comparisons with Cartesia Ink or ElevenLabs Scribe Speech to Text API\n\n- [Amazon Transcribe vs Cartesia Ink](https://www.anchorterminal.com/compare/amazon-transcribe-vs-cartesia-ink-stt.md)\n- [Amazon Transcribe vs ElevenLabs Scribe Speech to Text API](https://www.anchorterminal.com/compare/amazon-transcribe-vs-elevenlabs-scribe.md)\n- [AssemblyAI Speech-to-Text (Universal) vs Cartesia Ink](https://www.anchorterminal.com/compare/assemblyai-stt-vs-cartesia-ink-stt.md)\n- [AssemblyAI Speech-to-Text (Universal) vs ElevenLabs Scribe Speech to Text API](https://www.anchorterminal.com/compare/assemblyai-stt-vs-elevenlabs-scribe.md)\n- [Azure AI Speech speech-to-text vs Cartesia Ink](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-cartesia-ink-stt.md)\n- [Azure AI Speech speech-to-text vs ElevenLabs Scribe Speech to Text API](https://www.anchorterminal.com/compare/azure-speech-to-text-vs-elevenlabs-scribe.md)\n- [Cartesia Ink vs Deepgram Speech-to-Text (Nova-3, Flux)](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-deepgram-stt.md)\n- [Cartesia Ink vs Gladia Speech-to-Text API + MCP](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-gladia-stt.md)\n- [Cartesia Ink vs Google Cloud Speech-to-Text](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-google-speech-to-text.md)\n- [Cartesia Ink vs Groq Speech-to-Text](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-groq-speech-to-text.md)\n- [Cartesia Ink vs Mistral Voxtral Transcribe](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-mistral-voxtral-transcribe.md)\n- [Cartesia Ink vs OpenAI Speech to Text](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-openai-speech-to-text.md)\n- [Cartesia Ink vs Rev AI Speech-to-Text API](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-rev-ai-stt.md)\n- [Cartesia Ink vs Soniox Speech-to-Text](https://www.anchorterminal.com/compare/cartesia-ink-stt-vs-soniox-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 ElevenLabs Scribe Speech to Text API](https://www.anchorterminal.com/compare/deepgram-stt-vs-elevenlabs-scribe.md)\n- [ElevenLabs Scribe Speech to Text API vs Gladia Speech-to-Text API + MCP](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-gladia-stt.md)\n- [ElevenLabs Scribe Speech to Text API vs Google Cloud Speech-to-Text](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-google-speech-to-text.md)\n- [ElevenLabs Scribe Speech to Text API vs Groq Speech-to-Text](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-groq-speech-to-text.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- [ElevenLabs Scribe Speech to Text API vs OpenAI Speech to Text](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-openai-speech-to-text.md)\n- [ElevenLabs Scribe Speech to Text API vs Rev AI Speech-to-Text API](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-rev-ai-stt.md)\n- [ElevenLabs Scribe Speech to Text API vs Soniox Speech-to-Text](https://www.anchorterminal.com/compare/elevenlabs-scribe-vs-soniox-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",
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        "name": "Cartesia Ink vs ElevenLabs Scribe Speech to Text API",
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    "title": "Cartesia Ink vs ElevenLabs Scribe Speech to Text for AI agents (2026)",
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