{
  "data": {
    "a": {
      "slug": "playht-voice-cloning",
      "name": "PlayHT Voice Cloning API",
      "vendor": "PlayHT",
      "vendorUrl": "https://play.ht",
      "kind": "model",
      "category": "voice-cloning",
      "summary": "Discontinued PlayHT service for creating voices from uploaded audio samples.",
      "url": "https://www.anchorterminal.com/tools/playht-voice-cloning",
      "markdownUrl": "https://www.anchorterminal.com/tools/playht-voice-cloning.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/playht-voice-cloning.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/playht-voice-cloning.json",
      "repo": "https://github.com/playht/pyht",
      "license": "Apache-2.0 (Python SDK)",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.play.ht/api/v2",
      "packages": [
        {
          "registry": "npm",
          "name": "playht"
        },
        {
          "registry": "pypi",
          "name": "pyht"
        }
      ],
      "auth": "api-key",
      "authNotes": "Two headers, `X-USER-ID` and `AUTHORIZATION` with the secret key, both from the dashboard. The endpoints no longer answer.",
      "pricing": "paid",
      "pricingNotes": "Cloning was sold inside PlayHT's API and Studio plans, with custom cloning terms on Enterprise. Per-clone prices couldn't be recovered from a primary source (https://web.archive.org/web/20250625003728/https://play.ht/pricing/).",
      "priceSummary": "Paid",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "Service shut down. No x402 or machine payment was ever documented (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 218,
        "npmWeekly": 14219,
        "pypiWeekly": 6561,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.play.ht/reference/api-create-instant-voice-clone",
      "llmsTxt": "https://docs.play.ht/llms.txt",
      "capabilities": [
        "voice.clone",
        "speech.tts"
      ],
      "tags": [
        "closed-source",
        "retired",
        "python",
        "typescript"
      ],
      "lastRelease": "2025-05-21",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 4.2,
        "grade": "F",
        "agentReady": false,
        "rank": 0,
        "ranked": false,
        "notRankedWhy": "Shut down 2025-12-31, so out of the ranking",
        "rankOf": 452,
        "categoryRank": 10,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 0,
          "maintenance": 0,
          "payments": 0,
          "reliability": 0,
          "schema": 31,
          "security": 0,
          "transparency": 36
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -4,
        "negativeNotes": [
          "2026-10-01. docs.play.ht still documents `POST /api/v2/cloned-voices/instant` with no shutdown notice, and play.ht served its old marketing page, while api.play.ht doesn't resolve and the platform closed on 2025-12-31. An endpoint removed while still advertised. https://docs.play.ht/reference/api-create-instant-voice-clone and https://inworld.ai/resources/migrate-from-playht"
        ],
        "verdict": "The API reference is still readable at docs.play.ht, useful for mapping old integrations. Shut down, api.play.ht doesn't resolve.",
        "strengths": [
          "The API reference is still readable at docs.play.ht, useful for mapping old integrations",
          "SDKs remain on GitHub under Apache-2.0",
          "The reference lists each response code, including 415 for unsupported audio and 429 for rate limits"
        ],
        "weaknesses": [
          "Shut down, api.play.ht doesn't resolve",
          "Cloned voices reportedly deleted at shutdown with no export",
          "Docs and marketing pages still advertise the API with no shutdown notice",
          "No consent or verification step was ever in the API"
        ],
        "agentNotes": [
          "Don't call `api.play.ht`. The host doesn't resolve",
          "Ignore docs.play.ht for new work. It documents an API that no longer exists",
          "Re-create voices with another vendor from the original recordings, the clones can't be recovered"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 1,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "F",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 4.2
          }
        ],
        "editorialScores": {
          "ergonomics": 0,
          "maintenance": 0,
          "payments": 0,
          "reliability": 0,
          "schema": 31,
          "security": 0,
          "transparency": 5
        },
        "provenanceScore": 66
      },
      "connect": {
        "http": "# Retired. api.play.ht no longer resolves.\ncurl -X POST https://api.play.ht/api/v2/cloned-voices/instant -H \"X-USER-ID: $PLAYHT_USER_ID\" -H \"AUTHORIZATION: $PLAYHT_API_KEY\" \\\n  -F sample_file=@sample.wav -F voice_name=support-voice"
      },
      "letme": {
        "capability": "https://letme.dev/voice.clone",
        "tool": "https://letme.dev/playht-voice-cloning"
      },
      "sameCompany": [
        "playht-tts"
      ],
      "area": "voice",
      "retired": "2025-12-31",
      "provenance": {
        "legalEntity": "PlayHT, Inc.",
        "domain": "play.ht",
        "domainRegistered": "2016-11-29",
        "endpointOnVendorDomain": true,
        "terms": "https://web.archive.org/web/20250222123504/https://play.ht/terms/",
        "privacy": "https://web.archive.org/web/20250202131353/https://play.ht/privacy/",
        "statusPage": "",
        "changelog": "",
        "securityTxt": "unknown",
        "checked": "2026-10-01",
        "notes": [
          "On 2026-10-01 api.play.ht didn't resolve, while play.ht and docs.play.ht still served old marketing and API reference pages with no shutdown notice",
          "Terms and privacy links point to Internet Archive copies from February 2025"
        ],
        "score": 66
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/playht-voice-cloning.json"
    },
    "b": {
      "slug": "ultravox-voice-cloning",
      "name": "Ultravox Voice Cloning",
      "vendor": "Ultravox (Fixie.ai)",
      "vendorUrl": "https://www.ultravox.ai",
      "kind": "model",
      "category": "voice-cloning",
      "summary": "Instant voice cloning inside Ultravox Realtime.",
      "url": "https://www.anchorterminal.com/tools/ultravox-voice-cloning",
      "markdownUrl": "https://www.anchorterminal.com/tools/ultravox-voice-cloning.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/ultravox-voice-cloning.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/ultravox-voice-cloning.json",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.ultravox.ai/api",
      "packages": [],
      "auth": "api-key",
      "authNotes": "`X-API-Key` header, the same key as the rest of the Ultravox API.",
      "pricing": "freemium",
      "pricingNotes": "No separate cloning fee. Pay as you go includes 1 cloned voice and Pro ($100 a month, annual rate) includes 5, with speech from the clone billed inside calls at the standard $0.05 a minute. More clones are by request (https://www.ultravox.ai/pricing).",
      "priceSummary": "$100 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 support in the docs, pricing page or MCP docs (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.ultravox.ai/voices/cloning",
      "llmsTxt": "https://docs.ultravox.ai/llms.txt",
      "openapi": "https://api.ultravox.ai/api/schema/",
      "capabilities": [
        "voice.clone",
        "speech.tts"
      ],
      "tags": [
        "hosted",
        "closed-source",
        "no-card",
        "llms-txt",
        "openapi"
      ],
      "lastRelease": "2025-12-03",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 41,
        "grade": "E",
        "agentReady": false,
        "rank": 420,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 9,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 35,
          "maintenance": 5,
          "payments": 40,
          "reliability": 40,
          "schema": 68,
          "security": 35,
          "transparency": 54
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "One multipart request with a 30 to 60 second sample. No consent or speaker verification, only a warranty in the terms.",
        "strengths": [
          "One multipart request with a 30 to 60 second sample",
          "No fee on top of the $0.05 a minute call rate",
          "One clone on the free Pay as You Go plan with 30 free minutes",
          "Voices are private to the creating account",
          "Call History records each call that uses the voice"
        ],
        "weaknesses": [
          "No consent or speaker verification, only a warranty in the terms",
          "Clones work only inside Ultravox calls",
          "No documented errors, retry guidance or REST SDK",
          "Changelog's newest entry is 2025-12-03",
          "Docs say one clone per account, the pricing page says five on Pro"
        ],
        "agentNotes": [
          "Send a single clean, single-speaker MP3 or WAV of 30 to 60 seconds, 10 MB at most",
          "Expect one clone per account unless support raises it, whatever the plan page says",
          "Test the voice in the Playground before putting it on a live agent",
          "Get the speaker's written consent first, the terms require it and Ultravox doesn't check"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "E",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 41
          }
        ],
        "editorialScores": {
          "ergonomics": 35,
          "maintenance": 5,
          "payments": 40,
          "reliability": 40,
          "schema": 68,
          "security": 35,
          "transparency": 25
        },
        "provenanceScore": 82
      },
      "connect": {
        "http": "curl -X POST https://api.ultravox.ai/api/voices -H \"X-API-Key: $ULTRAVOX_API_KEY\" \\\n  -F 'file=@sample.wav' -F 'name=Support voice' -F 'language=en-US'"
      },
      "letme": {
        "capability": "https://letme.dev/voice.clone",
        "tool": "https://letme.dev/ultravox-voice-cloning"
      },
      "sameCompany": [
        "ultravox"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "Speech from a cloned voice in calls",
          "unit": "call-minute",
          "usd": 0.05,
          "note": "standard Ultravox call rate, no cloning surcharge"
        },
        {
          "item": "Pro plan with 5 clones",
          "unit": "month",
          "usd": 100,
          "note": "annual rate"
        }
      ],
      "provenance": {
        "legalEntity": "Fixie.ai Inc.",
        "domain": "ultravox.ai",
        "domainRegistered": "2023-10-05",
        "endpointOnVendorDomain": true,
        "terms": "https://www.ultravox.ai/terms",
        "privacy": "https://www.ultravox.ai/privacy",
        "statusPage": "https://status.ultravox.ai",
        "changelog": "https://docs.ultravox.ai/changelog/news",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 82
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/ultravox-voice-cloning.json",
      "live": {
        "slug": "ultravox-voice-cloning",
        "probe": {
          "target": "https://api.ultravox.ai/api",
          "method": "get",
          "lastAt": "2026-10-04T23:48:17.4072269Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 137,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 137,
          "p95ms24h": 215,
          "samples24h": 272,
          "samples30d": 1100,
          "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": 270,
              "ok": 270
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.ultravox.ai",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T21:40:32.200031803Z"
        },
        "securityTxt": {
          "url": "https://ultravox.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:37.319054674Z"
        },
        "llmsTxt": {
          "url": "https://docs.ultravox.ai/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:18.748014248Z"
        },
        "domain": {
          "domain": "ultravox.ai",
          "registered": "2023-10-05",
          "source": "https://rdap.identitydigital.services/rdap/domain/ultravox.ai",
          "checkedAt": "2026-10-04T13:04:52.103171331Z"
        },
        "pages": [
          {
            "url": "https://docs.ultravox.ai/changelog/news",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:44:12.532381944Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "511ea5f1155f"
          },
          {
            "url": "https://www.ultravox.ai/pricing",
            "kind": "pricing",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:33.032419595Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "88a4dd170a6b"
          },
          {
            "url": "https://www.ultravox.ai/privacy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:35.200556395Z",
            "changedAt": "2026-10-02T15:28:38.982647689Z",
            "fingerprint": "f1f201438d2e"
          },
          {
            "url": "https://www.ultravox.ai/terms",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-04T15:52:37.474878684Z",
            "changedAt": "2026-10-02T15:28:40.979842821Z",
            "fingerprint": "663d0615a1d5"
          }
        ],
        "updatedAt": "2026-10-04T23:48:17.4072269Z"
      }
    },
    "summary": "Ultravox Voice Cloning has a score of 41 (E) against PlayHT Voice Cloning API's 4.2 (F). Both do voice clone. The largest gap is reliability, 40 points."
  },
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    "html": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-ultravox-voice-cloning",
    "json": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-ultravox-voice-cloning.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
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  "markdown": "Ultravox Voice Cloning has a score of 41 (E) against PlayHT Voice Cloning API's 4.2 (F). Both do voice clone. The largest gap is reliability, 40 points.\n\n- PlayHT Voice Cloning API: grade F, 4.2/100, rank retired, not ranked. Markdown https://www.anchorterminal.com/tools/playht-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/playht-voice-cloning.json\n- Ultravox Voice Cloning: grade E, 41/100, rank #420 of 452. Markdown https://www.anchorterminal.com/tools/ultravox-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/ultravox-voice-cloning.json\n\n## Which one, for what\n\nPick PlayHT Voice Cloning API for nothing in particular (no category where it leads by five points or more).\n\nPick Ultravox Voice Cloning for reliability (+40), schema \u0026 documentation (+37), agent ergonomics (+35), security \u0026 auth (+35), payments \u0026 pricing (+40), maintenance \u0026 community (+5), transparency \u0026 trust (+18).\n\n## Score by category\n\n| Category | Weight | PlayHT Voice Cloning API | Ultravox Voice Cloning | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 0 | 40 | Ultravox Voice Cloning +40 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 31 | 68 | Ultravox Voice Cloning +37 |\n| Agent ergonomics | 13% (16.2 this run) | 0 | 35 | Ultravox Voice Cloning +35 |\n| Security \u0026 auth | 14% (17.5 this run) | 0 | 35 | Ultravox Voice Cloning +35 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 0 | 40 | Ultravox Voice Cloning +40 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 0 | 5 | Ultravox Voice Cloning +5 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 36 | 54 | Ultravox Voice Cloning +18 |\n| Negative events | ≤15 | -4 | 0 | |\n| **Total** | | **4.2 · F** | **41 · E** | |\n\n## Facts side by side\n\n| Fact | PlayHT Voice Cloning API | Ultravox Voice Cloning |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | PlayHT | Ultravox (Fixie.ai) |\n| Hosted endpoint | `https://api.play.ht/api/v2` | `https://api.ultravox.ai/api` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Paid | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 (Python SDK) | none |\n| Tools exposed | none | 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 | 2025-05-21 | 2025-12-03 |\n| Popularity | 218 stars, 14k npm/wk, 6.6k PyPI/wk | none |\n| Agent reviews | 1/5 (2) | 2.5/5 (2) |\n\n## Verdicts\n\n**PlayHT Voice Cloning API.** The API reference is still readable at docs.play.ht, useful for mapping old integrations. Shut down, api.play.ht doesn't resolve.\n\n**Ultravox Voice Cloning.** One multipart request with a 30 to 60 second sample. No consent or speaker verification, only a warranty in the terms.\n\n## Before you call either\n\n### PlayHT Voice Cloning API\n\n1. Don't call `api.play.ht`. The host doesn't resolve\n2. Ignore docs.play.ht for new work. It documents an API that no longer exists\n3. Re-create voices with another vendor from the original recordings, the clones can't be recovered\n\n### Ultravox Voice Cloning\n\n1. Send a single clean, single-speaker MP3 or WAV of 30 to 60 seconds, 10 MB at most\n2. Expect one clone per account unless support raises it, whatever the plan page says\n3. Test the voice in the Playground before putting it on a live agent\n4. Get the speaker's written consent first, the terms require it and Ultravox doesn't check\n\n## Other comparisons with PlayHT Voice Cloning API or Ultravox Voice Cloning\n\n- [Cartesia Voice Cloning API + MCP vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-playht-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-playht-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Fish Audio Voice Cloning API vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-playht-voice-cloning.md)\n- [Fish Audio Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Hume Octave Voice Design and Cloning + MCP vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-playht-voice-cloning.md)\n- [Hume Octave Voice Design and Cloning + MCP vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Murf Voice Cloning API vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-playht-voice-cloning.md)\n- [Murf Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-ultravox-voice-cloning.md)\n- [PlayHT Voice Cloning API vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-resemble-ai-voice-cloning.md)\n- [PlayHT Voice Cloning API vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-soniox-voice-cloning.md)\n- [PlayHT Voice Cloning API vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-speechify-voice-cloning.md)\n- [Resemble AI Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Soniox Voice Cloning vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Speechify API Voice Cloning vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-ultravox-voice-cloning.md)\n",
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      }
    ],
    "description": "Ultravox Voice Cloning has a score of 41 (E) against PlayHT Voice Cloning API's 4.2 (F). Both do voice clone. The largest gap is reliability, 40 points. Category scores, facts, verdicts and agent notes side by side.",
    "facts": [
      "PlayHT Voice Cloning API F 4.2",
      "Ultravox Voice Cloning E 41",
      "scores"
    ],
    "h1": "PlayHT Voice Cloning API vs Ultravox Voice Cloning",
    "image": "https://www.anchorterminal.com/assets/og/compare-playht-voice-cloning-vs-ultravox-voice-cloning.png",
    "path": "/compare/playht-voice-cloning-vs-ultravox-voice-cloning",
    "published": "2026-10-01",
    "section": "tools",
    "title": "PlayHT Voice Cloning API vs Ultravox Voice Cloning for AI agents",
    "toc": null,
    "updated": "2026-10-04",
    "url": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-ultravox-voice-cloning"
  },
  "tokens": {
    "markdown": 1750,
    "slim": 380
  },
  "version": 1
}