{
  "data": {
    "a": {
      "slug": "cartesia-tts",
      "name": "Cartesia Sonic TTS API + MCP",
      "vendor": "Cartesia",
      "vendorUrl": "https://cartesia.ai",
      "kind": "model",
      "category": "text-to-speech",
      "summary": "Sonic text-to-speech, currently `sonic-3.6` in 44 languages, over `/tts/bytes`, `/tts/sse` and a WebSocket that takes streamed LLM text with contexts and word timestamps.",
      "url": "https://www.anchorterminal.com/tools/cartesia-tts",
      "markdownUrl": "https://www.anchorterminal.com/tools/cartesia-tts.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cartesia-tts.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cartesia-tts.json",
      "repo": "https://github.com/cartesia-ai/cartesia-python",
      "license": "Apache-2.0 (SDKs)",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://api.cartesia.ai",
      "packages": [
        {
          "registry": "npm",
          "name": "@cartesia/cartesia-js"
        },
        {
          "registry": "pypi",
          "name": "cartesia"
        },
        {
          "registry": "pypi",
          "name": "cartesia-mcp"
        }
      ],
      "auth": "mixed",
      "authNotes": "`Authorization: Bearer` API key plus a required `Cartesia-Version` date header (currently `2026-08-14`). Browsers should use short-lived access tokens minted server-side. The hosted MCP at `https://mcp.cartesia.ai/mcp` signs in through the Playground and creates an MCP key. The local `cartesia-mcp` reads `CARTESIA_API_KEY`.",
      "pricing": "freemium",
      "pricingNotes": "TTS costs about 1 credit a character, charged only on successful requests. Free has 20,000 credits a month (about 27 minutes of Sonic 3.6), Pro $5 100,000, Startup $49 1.25M and Scale $299 8M. Overages, if enabled, cost $65 per 1M credits on Pro, $45 on Startup and $38 on Scale. Commercial use starts at Pro. Unused credits roll over up to 2 times the monthly amount (https://cartesia.ai/pricing).",
      "priceSummary": "$5 / mo",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402 or machine payment in the docs or pricing (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": 15,
      "popularity": {
        "githubStars": 133,
        "npmWeekly": 166023,
        "pypiWeekly": 176771,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.cartesia.ai/build-with-cartesia/tts-models/latest",
      "llmsTxt": "https://docs.cartesia.ai/llms.txt",
      "capabilities": [
        "speech.tts",
        "speech.streaming",
        "speech.voices",
        "speech.ssml",
        "speech.languages"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "closed-source",
        "python",
        "typescript",
        "llms-txt",
        "mcp",
        "streaming",
        "enterprise"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 64.2,
        "grade": "B",
        "agentReady": false,
        "rank": 187,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 6,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 65,
          "maintenance": 79,
          "payments": 30,
          "reliability": 63,
          "schema": 86,
          "security": 58,
          "transparency": 71
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "WebSocket input accepts streamed LLM text with contexts, flushing and word timestamps. Five TTS incidents on the status page between 29 July and 21 August 2026.",
        "strengths": [
          "WebSocket input accepts streamed LLM text with contexts, flushing and word timestamps",
          "Dated model snapshots such as `sonic-3.6-2026-08-27` never change, and `Cartesia-Version` pins the API shape",
          "OpenAPI and AsyncAPI files per API version listed in llms.txt",
          "Short-lived access tokens with TTS, STT and agent grants for browser clients",
          "Deprecations dated in the changelog, Sonic-2 and Sonic Turbo sunset after 2026-10-20"
        ],
        "weaknesses": [
          "Five TTS incidents on the status page between 29 July and 21 August 2026",
          "TTS concurrency is 2 on Free, 3 on Pro, 5 on Startup and 15 on Scale",
          "The Terms allow training on inputs and outputs unless you opt out by form",
          "Zero data retention is Enterprise only",
          "No SLA, and no error responses documented for the TTS endpoints"
        ],
        "agentNotes": [
          "Send the `Cartesia-Version` header on every request.",
          "Pin a dated snapshot such as `sonic-3.6-2026-08-27` if output must not change.",
          "Move off `sonic-2`, `sonic-turbo` and `sonic-3-2025-10-27` before 2026-10-20.",
          "Expect a 429 at the plan's concurrency limit and queue requests yourself.",
          "Mint a short-lived access token for browser clients instead of shipping the API key."
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 64.2
          }
        ],
        "editorialScores": {
          "ergonomics": 65,
          "maintenance": 79,
          "payments": 30,
          "reliability": 63,
          "schema": 86,
          "security": 58,
          "transparency": 60
        },
        "provenanceScore": 82
      },
      "connect": {
        "http": "curl -X POST https://api.cartesia.ai/tts/bytes -H \"Authorization: Bearer $CARTESIA_API_KEY\" \\\n  -H \"Cartesia-Version: 2026-08-14\" -H \"content-type: application/json\" -o speech.wav \\\n  -d '{\"model_id\":\"sonic-3.6\",\"transcript\":\"Your table is booked for seven.\",\"voice\":{\"id\":\"47c38ca4-5f35-497b-b1a3-415245fb35e1\"},\"output_format\":{\"container\":\"wav\",\"encoding\":\"pcm_s16le\",\"sample_rate\":44100}}'",
        "claudeCode": "claude mcp add --transport http --scope user cartesia https://mcp.cartesia.ai/mcp",
        "config": {
          "mcpServers": {
            "cartesia": {
              "args": [
                "cartesia-mcp"
              ],
              "command": "uvx",
              "env": {
                "CARTESIA_API_KEY": "${CARTESIA_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/speech.tts",
        "tool": "https://letme.dev/cartesia-tts"
      },
      "sameCompany": [
        "cartesia-voice-cloning"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "Sonic TTS overage on Pro",
          "unit": "1m-chars",
          "usd": 65,
          "note": "about 1 credit a character, $65 per 1M credits"
        },
        {
          "item": "Sonic TTS overage on Startup",
          "unit": "1m-chars",
          "usd": 45
        },
        {
          "item": "Sonic TTS overage on Scale",
          "unit": "1m-chars",
          "usd": 38
        },
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 5,
          "note": "100,000 credits"
        },
        {
          "item": "Startup plan",
          "unit": "month",
          "usd": 49,
          "note": "1.25M credits"
        },
        {
          "item": "Scale plan",
          "unit": "month",
          "usd": 299,
          "note": "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": "none",
        "checked": "2026-09-30",
        "score": 82
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/cartesia-tts.json",
      "live": {
        "slug": "cartesia-tts",
        "probe": {
          "target": "https://api.cartesia.ai",
          "method": "get",
          "lastAt": "2026-10-05T00:25:40.801190313Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 92,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 61,
          "p95ms24h": 137,
          "samples24h": 272,
          "samples30d": 1107,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 5,
              "ok": 5
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.cartesia.ai",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-05T00:22:38.61205555Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "cartesia-ai/cartesia-python",
            "version": "v4.2.0",
            "released": "2026-09-02",
            "seenAt": "2026-10-04T16:23:11.882857509Z"
          },
          {
            "registry": "npm",
            "name": "@cartesia/cartesia-js",
            "version": "4.2.0",
            "seenAt": "2026-10-04T16:23:08.936594762Z"
          },
          {
            "registry": "pypi",
            "name": "cartesia",
            "version": "4.2.0",
            "released": "2026-09-02",
            "seenAt": "2026-10-04T16:23:09.798087978Z"
          },
          {
            "registry": "pypi",
            "name": "cartesia-mcp",
            "version": "0.26.0",
            "released": "2026-09-30",
            "seenAt": "2026-10-04T16:23:09.984461576Z"
          }
        ],
        "githubStars": 133,
        "npmWeekly": 108942,
        "pypiWeekly": 188249,
        "securityTxt": {
          "url": "https://cartesia.ai/.well-known/security.txt",
          "state": "valid",
          "expires": "2027-10-03T00:00:00.000Z",
          "checkedAt": "2026-10-04T15:15:57.920556028Z"
        },
        "llmsTxt": {
          "url": "https://docs.cartesia.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:17:23.748277625Z"
        },
        "domain": {
          "domain": "cartesia.ai",
          "registered": "2023-05-10",
          "source": "https://rdap.identitydigital.services/rdap/domain/cartesia.ai",
          "checkedAt": "2026-10-04T13:04:05.26596839Z"
        },
        "pages": [
          {
            "url": "https://docs.cartesia.ai/changelog/2026",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:43:22.154553148Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "56a07dda1f5d"
          },
          {
            "url": "https://cartesia.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-04T15:41:44.64571005Z",
            "changedAt": "2026-10-03T15:29:56.901063562Z",
            "fingerprint": "3e49bcd49fcf"
          },
          {
            "url": "https://www.cartesia.ai/legal/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:49:41.751185158Z",
            "changedAt": "2026-10-03T15:37:37.717663201Z",
            "fingerprint": "6fea00c7255f"
          },
          {
            "url": "https://www.cartesia.ai/legal/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:49:43.846741137Z",
            "changedAt": "2026-10-03T15:37:39.779484537Z",
            "fingerprint": "c899e30661ba"
          }
        ],
        "updatedAt": "2026-10-05T00:25:40.801190313Z"
      }
    },
    "b": {
      "slug": "murf-tts",
      "name": "Murf TTS API + MCP",
      "vendor": "Murf",
      "vendorUrl": "https://murf.ai",
      "kind": "model",
      "category": "text-to-speech",
      "summary": "Murf's API for generating speech from text.",
      "url": "https://www.anchorterminal.com/tools/murf-tts",
      "markdownUrl": "https://www.anchorterminal.com/tools/murf-tts.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/murf-tts.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/murf-tts.json",
      "repo": "https://github.com/murf-ai/murf-python-sdk",
      "license": "MIT (SDK and MCP server)",
      "transports": [
        "http",
        "stdio"
      ],
      "remoteUrl": "https://api.murf.ai/v1",
      "packages": [
        {
          "registry": "pypi",
          "name": "murf"
        },
        {
          "registry": "pypi",
          "name": "murf-mcp"
        }
      ],
      "auth": "api-key",
      "authNotes": "`api-key` header. A generate-token endpoint issues short-lived tokens (sent as `token`) for client-side use. The MCP server reads `MURF_API_KEY`. Streaming runs on regional hosts such as `global.api.murf.ai`, non-streaming on `api.murf.ai`.",
      "pricing": "freemium",
      "pricingNotes": "Free trial of 100,000 characters with no time limit. Pay as you go with a $2 minimum purchase. Falcon 2 is 1 cent per 1,000 characters (marketed as 1 cent a minute), Gen2 $0.03 per 1,000 characters. Enterprise contracts add volume discounts, reserved concurrency and data residency. Startups under 100 staff can apply for 50M free characters over 3 months (https://murf.ai/pricing?product=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": 108,
        "npmWeekly": null,
        "pypiWeekly": 669,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://murf.ai/api/docs/introduction/overview",
      "llmsTxt": "https://murf.ai/api/docs/llms.txt",
      "openapi": "https://murf.ai/api/docs/openapi.json",
      "capabilities": [
        "speech.tts",
        "speech.streaming",
        "speech.voices",
        "speech.languages"
      ],
      "tags": [
        "hosted",
        "freemium",
        "free-tier",
        "closed-source",
        "python",
        "openapi",
        "llms-txt",
        "mcp",
        "streaming",
        "enterprise"
      ],
      "lastRelease": "2026-08-20",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 70.9,
        "grade": "BB",
        "agentReady": true,
        "rank": 91,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 5,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 71,
          "maintenance": 53,
          "payments": 40,
          "reliability": 90,
          "schema": 85,
          "security": 68,
          "transparency": 69
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Falcon 2 costs 1 cent per 1,000 characters on pay as you go, with a $2 minimum purchase. Falcon 2 concurrency is 2 outside US-East on free and pay as you go, 5 on US-East.",
        "strengths": [
          "Falcon 2 costs 1 cent per 1,000 characters on pay as you go, with a $2 minimum purchase",
          "OpenAPI and AsyncAPI specs, llms.txt and Markdown twins of every docs page",
          "Errors page lists 7 HTTP codes, 4 WebSocket errors and 8 warnings, each with cause and fix, and tells you to back off on 429",
          "`encodedAsBase64` returns audio inline and Murf says nothing is stored",
          "SOC 2 Type II, ISO 27001 and ISO 42001 listed on the security page"
        ],
        "weaknesses": [
          "Falcon 2 concurrency is 2 outside US-East on free and pay as you go, 5 on US-East",
          "Gen2 streaming was deprecated on 2026-08-16 with 27 days' notice",
          "The security page says all data stays in AWS us-east-2, while Falcon 2 runs in 12 regions and the subprocessor list names four other clouds",
          "Download links last 72 hours per the TTS overview and 24 hours per the Enterprise FAQ",
          "Official SDK in Python only, last released 2026-03-05"
        ],
        "agentNotes": [
          "Send `locale` on every request, since `multiNativeLocale` was replaced on 2026-03-05.",
          "Split text into chunks under 3,000 characters per request.",
          "Use the US-East host for 5 concurrent Falcon 2 calls instead of 2.",
          "Set `encodedAsBase64` to get audio inline and skip the expiring download link.",
          "Back off on 429 and close WebSocket contexts with `end: true` to free slots."
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 70.9
          }
        ],
        "editorialScores": {
          "ergonomics": 71,
          "maintenance": 53,
          "payments": 40,
          "reliability": 90,
          "schema": 85,
          "security": 68,
          "transparency": 52
        },
        "provenanceScore": 86
      },
      "connect": {
        "http": "curl -X POST https://global.api.murf.ai/v1/speech/stream -H \"api-key: $MURF_API_KEY\" \\\n  -H \"content-type: application/json\" -o hello.wav \\\n  -d '{\"text\":\"Hi, how are you doing today?\",\"voiceId\":\"Gordon\",\"locale\":\"en-US\",\"model\":\"falcon-2\"}'",
        "claudeCode": "claude mcp add murf -e MURF_API_KEY=$MURF_API_KEY -- uvx murf-mcp",
        "config": {
          "mcpServers": {
            "murf": {
              "args": [
                "murf-mcp"
              ],
              "command": "uvx",
              "env": {
                "MURF_API_KEY": "${MURF_API_KEY}"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/speech.tts",
        "tool": "https://letme.dev/murf-tts"
      },
      "sameCompany": [
        "murf-voice-cloning"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "Falcon 2",
          "unit": "1m-chars",
          "usd": 10,
          "note": "1 cent per 1,000 characters, pay as you go"
        },
        {
          "item": "Gen2",
          "unit": "1m-chars",
          "usd": 30,
          "note": "$0.03 per 1,000 characters, pay as you go"
        }
      ],
      "provenance": {
        "legalEntity": "Murf Inc.",
        "domain": "murf.ai",
        "domainRegistered": "2020-07-17",
        "endpointOnVendorDomain": true,
        "terms": "https://murf.ai/resources/terms_of_service/",
        "privacy": "https://murf.ai/resources/privacy_policy/",
        "statusPage": "https://murf.statuspage.io",
        "changelog": "https://murf.ai/api/docs/changelog",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "Impressum at https://murf.ai/legal/impressum names Murf Inc., 535 Mission Street, San Francisco",
          "The status page is on Atlassian's domain, linked from https://murf.ai/api/docs/resources/rate-limits"
        ],
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/murf-tts.json",
      "live": {
        "slug": "murf-tts",
        "probe": {
          "target": "https://api.murf.ai/v1",
          "method": "get",
          "lastAt": "2026-10-05T00:25:46.555235203Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 275,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 280,
          "p95ms24h": 314,
          "samples24h": 272,
          "samples30d": 1107,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 5,
              "ok": 5
            }
          ]
        },
        "vendorStatus": {
          "page": "https://murf.statuspage.io",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-05T00:22:52.156758003Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "murf-ai/murf-python-sdk",
            "version": "2.3.0",
            "released": "2026-03-05",
            "seenAt": "2026-10-04T16:34:04.756486902Z"
          },
          {
            "registry": "pypi",
            "name": "murf",
            "version": "2.3.0",
            "released": "2026-03-05",
            "seenAt": "2026-10-04T16:34:02.675145977Z"
          },
          {
            "registry": "pypi",
            "name": "murf-mcp",
            "version": "0.1.14",
            "released": "2026-08-20",
            "seenAt": "2026-10-04T16:34:02.860796446Z"
          }
        ],
        "githubStars": 109,
        "pypiWeekly": 688,
        "securityTxt": {
          "url": "https://murf.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:48.759951224Z"
        },
        "llmsTxt": {
          "url": "https://murf.ai/api/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:01.980319662Z"
        },
        "domain": {
          "domain": "murf.ai",
          "registered": "2020-07-17",
          "source": "https://rdap.identitydigital.services/rdap/domain/murf.ai",
          "checkedAt": "2026-10-04T13:09:09.691163163Z"
        },
        "pages": [
          {
            "url": "https://murf.ai/api/docs/changelog",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-04T15:46:05.693084471Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "5591ee084345"
          },
          {
            "url": "https://murf.ai/api/docs/changelog/2026/3/5",
            "kind": "deprecations",
            "status": 304,
            "checkedAt": "2026-10-04T15:46:08.099479358Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "403585e8bd1c"
          },
          {
            "url": "https://murf.ai/api/docs/changelog/2026/7/20",
            "kind": "deprecations",
            "status": 304,
            "checkedAt": "2026-10-04T15:46:10.011844451Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "9f07d2b4b9f3"
          },
          {
            "url": "https://murf.ai/pricing?product=api",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:46:11.928037108Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e3b0c44298fc"
          },
          {
            "url": "https://murf.ai/resources/privacy_policy/",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:14.329020568Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "fd6127aff3f7"
          },
          {
            "url": "https://murf.ai/resources/terms_of_service/",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:16.119755173Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "38c0780bf0e6"
          }
        ],
        "updatedAt": "2026-10-05T00:25:46.555235203Z"
      }
    },
    "summary": "Murf TTS API + MCP has a score of 70.9 (BB) against Cartesia Sonic TTS API + MCP's 64.2 (B). Both do speech tts. The largest gap is reliability, 27 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/cartesia-tts-vs-murf-tts",
    "json": "https://www.anchorterminal.com/compare/cartesia-tts-vs-murf-tts.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/cartesia-tts-vs-murf-tts.md",
    "slim": "https://www.anchorterminal.com/compare/cartesia-tts-vs-murf-tts.min.md"
  },
  "markdown": "Murf TTS API + MCP has a score of 70.9 (BB) against Cartesia Sonic TTS API + MCP's 64.2 (B). Both do speech tts. The largest gap is reliability, 27 points.\n\n- Cartesia Sonic TTS API + MCP: grade B, 64.2/100, rank #187 of 452. Markdown https://www.anchorterminal.com/tools/cartesia-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/cartesia-tts.json\n- Murf TTS API + MCP: grade BB, 70.9/100, rank #91 of 452. Markdown https://www.anchorterminal.com/tools/murf-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/murf-tts.json\n\n## Which one, for what\n\nPick Cartesia Sonic TTS API + MCP for maintenance \u0026 community (+26).\n\nPick Murf TTS API + MCP for reliability (+27), agent ergonomics (+6), security \u0026 auth (+10), payments \u0026 pricing (+10).\n\n## Score by category\n\n| Category | Weight | Cartesia Sonic TTS API + MCP | Murf TTS API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 63 | 90 | Murf TTS API + MCP +27 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 86 | 85 | Cartesia Sonic TTS API + MCP +1 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 71 | Murf TTS API + MCP +6 |\n| Security \u0026 auth | 14% (17.5 this run) | 58 | 68 | Murf TTS API + MCP +10 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 40 | Murf TTS API + MCP +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 79 | 53 | Cartesia Sonic TTS API + MCP +26 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 71 | 69 | Cartesia Sonic TTS API + MCP +2 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **64.2 · B** | **70.9 · BB** | |\n\n## Facts side by side\n\n| Fact | Cartesia Sonic TTS API + MCP | Murf TTS API + MCP |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Cartesia | Murf |\n| Hosted endpoint | `https://api.cartesia.ai` | `https://api.murf.ai/v1` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, stdio |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 (SDKs) | MIT (SDK and MCP server) |\n| Tools exposed | 15 | none |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-09-30 | 2026-08-20 |\n| Popularity | 133 stars, 166k npm/wk, 177k PyPI/wk | 108 stars, 669 PyPI/wk |\n| Agent reviews | 3/5 (2) | 3.5/5 (2) |\n\n## Verdicts\n\n**Cartesia Sonic TTS API + MCP.** WebSocket input accepts streamed LLM text with contexts, flushing and word timestamps. Five TTS incidents on the status page between 29 July and 21 August 2026.\n\n**Murf TTS API + MCP.** Falcon 2 costs 1 cent per 1,000 characters on pay as you go, with a $2 minimum purchase. Falcon 2 concurrency is 2 outside US-East on free and pay as you go, 5 on US-East.\n\n## Before you call either\n\n### Cartesia Sonic TTS API + MCP\n\n1. Send the `Cartesia-Version` header on every request.\n2. Pin a dated snapshot such as `sonic-3.6-2026-08-27` if output must not change.\n3. Move off `sonic-2`, `sonic-turbo` and `sonic-3-2025-10-27` before 2026-10-20.\n4. Expect a 429 at the plan's concurrency limit and queue requests yourself.\n5. Mint a short-lived access token for browser clients instead of shipping the API key.\n\n### Murf TTS API + MCP\n\n1. Send `locale` on every request, since `multiNativeLocale` was replaced on 2026-03-05.\n2. Split text into chunks under 3,000 characters per request.\n3. Use the US-East host for 5 concurrent Falcon 2 calls instead of 2.\n4. Set `encodedAsBase64` to get audio inline and skip the expiring download link.\n5. Back off on 429 and close WebSocket contexts with `end: true` to free slots.\n\n## Other comparisons with Cartesia Sonic TTS API + MCP or Murf TTS API + MCP\n\n- [Amazon Polly vs Cartesia Sonic TTS API + MCP](https://www.anchorterminal.com/compare/amazon-polly-vs-cartesia-tts.md)\n- [Amazon Polly vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/amazon-polly-vs-murf-tts.md)\n- [Azure AI Speech text-to-speech vs Cartesia Sonic TTS API + MCP](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-cartesia-tts.md)\n- [Azure AI Speech text-to-speech vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-murf-tts.md)\n- [Cartesia Sonic TTS API + MCP vs Deepgram Text-to-Speech (Aura-2, Flux TTS)](https://www.anchorterminal.com/compare/cartesia-tts-vs-deepgram-tts.md)\n- [Cartesia Sonic TTS API + MCP vs ElevenLabs Text to Speech API + MCP](https://www.anchorterminal.com/compare/cartesia-tts-vs-elevenlabs-tts.md)\n- [Cartesia Sonic TTS API + MCP vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/cartesia-tts-vs-playht-tts.md)\n- [Cartesia Sonic TTS API + MCP vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/cartesia-tts-vs-resemble-ai-tts.md)\n- [Cartesia Sonic TTS API + MCP vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/cartesia-tts-vs-rime-tts.md)\n- [Cartesia Sonic TTS API + MCP vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/cartesia-tts-vs-soniox-tts.md)\n- [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/deepgram-tts-vs-murf-tts.md)\n- [ElevenLabs Text to Speech API + MCP vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-murf-tts.md)\n- [Murf TTS API + MCP vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/murf-tts-vs-playht-tts.md)\n- [Murf TTS API + MCP vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/murf-tts-vs-resemble-ai-tts.md)\n- [Murf TTS API + MCP vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/murf-tts-vs-rime-tts.md)\n- [Murf TTS API + MCP vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/murf-tts-vs-soniox-tts.md)\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-05",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.3",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
  },
  "page": {
    "breadcrumbs": [
      {
        "name": "Home",
        "url": "https://www.anchorterminal.com/"
      },
      {
        "name": "Compare",
        "url": "https://www.anchorterminal.com/compare/"
      },
      {
        "name": "Cartesia Sonic TTS API + MCP vs Murf TTS API + MCP",
        "url": ""
      }
    ],
    "description": "Murf TTS API + MCP has a score of 70.9 (BB) against Cartesia Sonic TTS API + MCP's 64.2 (B). Both do speech tts. The largest gap is reliability, 27 points. Category scores, facts, verdicts and agent notes side by side.",
    "facts": [
      "Cartesia Sonic TTS API + MCP B 64.2",
      "Murf TTS API + MCP BB 70.9",
      "scores"
    ],
    "h1": "Cartesia Sonic TTS API + MCP vs Murf TTS API + MCP",
    "image": "https://www.anchorterminal.com/assets/og/compare-cartesia-tts-vs-murf-tts.png",
    "path": "/compare/cartesia-tts-vs-murf-tts",
    "published": "2026-10-01",
    "section": "tools",
    "title": "Cartesia Sonic TTS API + MCP vs Murf TTS API + MCP for AI agents",
    "toc": null,
    "updated": "2026-10-05",
    "url": "https://www.anchorterminal.com/compare/cartesia-tts-vs-murf-tts"
  },
  "tokens": {
    "markdown": 1700,
    "slim": 380
  },
  "version": 1
}
