{
  "data": {
    "a": {
      "slug": "playht-tts",
      "name": "PlayHT Text-to-Speech API",
      "vendor": "PlayHT",
      "vendorUrl": "https://play.ht",
      "kind": "model",
      "category": "text-to-speech",
      "summary": "Discontinued text-to-speech API from PlayHT, formerly supporting streaming audio and batch generation.",
      "url": "https://www.anchorterminal.com/tools/playht-tts",
      "markdownUrl": "https://www.anchorterminal.com/tools/playht-tts.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/playht-tts.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/playht-tts.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": "Sold as monthly API plans named Hacker or Pro, Startup, Growth and Enterprise, with rate limits set by plan. The plan prices couldn't be recovered from a primary source, since the API pricing tab wasn't archived and play.ht is gone. The last archived pricing page shows Studio plans only (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-getting-started",
      "llmsTxt": "https://docs.play.ht/llms.txt",
      "capabilities": [
        "speech.tts",
        "speech.streaming",
        "speech.voices",
        "speech.languages"
      ],
      "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": "high",
          "date": "2026-10-01"
        },
        "negative": -4,
        "negativeNotes": [
          "2026-10-01. docs.play.ht still documents `POST /api/v2/tts/stream`, the WebSocket API and batch jobs with no shutdown notice, and play.ht serves an 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-getting-started and https://inworld.ai/resources/migrate-from-playht"
        ],
        "verdict": "The old API reference is still readable at docs.play.ht for anyone porting code. api.play.ht doesn't resolve, so every call fails.",
        "strengths": [
          "The old API reference is still readable at docs.play.ht for anyone porting code",
          "SDKs remain on GitHub under Apache-2.0"
        ],
        "weaknesses": [
          "api.play.ht doesn't resolve, so every call fails",
          "docs.play.ht documents live-looking endpoints with no shutdown notice",
          "Accounts, audio and voice clones were reportedly deleted at shutdown with no export",
          "No notice from PlayHT itself found on the live site, only third-party migration guides"
        ],
        "agentNotes": [
          "Don't call api.play.ht, it doesn't resolve.",
          "Ignore docs.play.ht code samples, they describe a closed service.",
          "Map PlayDialog or Play 3.0 Mini work to another TTS listing before writing code."
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 1,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "high",
            "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/tts/stream -H \"X-USER-ID: $PLAYHT_USER_ID\" -H \"AUTHORIZATION: $PLAYHT_API_KEY\" \\\n  -H \"content-type: application/json\" -H \"accept: audio/mpeg\" -d '{\"text\":\"Hello\",\"voice_engine\":\"PlayDialog\"}'"
      },
      "letme": {
        "capability": "https://letme.dev/speech.tts",
        "tool": "https://letme.dev/playht-tts"
      },
      "sameCompany": [
        "playht-voice-cloning"
      ],
      "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-tts.json"
    },
    "b": {
      "slug": "soniox-tts",
      "name": "Soniox Text-to-Speech",
      "vendor": "Soniox",
      "vendorUrl": "https://soniox.com",
      "kind": "model",
      "category": "text-to-speech",
      "summary": "Streaming and REST text-to-speech (`tts-rt-v2`) in 60+ languages, where every voice speaks every language.",
      "url": "https://www.anchorterminal.com/tools/soniox-tts",
      "markdownUrl": "https://www.anchorterminal.com/tools/soniox-tts.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/soniox-tts.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/soniox-tts.json",
      "repo": "https://github.com/soniox/soniox-python",
      "license": "Apache-2.0 (Python SDK)",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://tts-rt.soniox.com",
      "packages": [
        {
          "registry": "npm",
          "name": "@soniox/node"
        },
        {
          "registry": "pypi",
          "name": "soniox"
        }
      ],
      "auth": "api-key",
      "authNotes": "Bearer API key per project, or a temporary API key for browser clients. REST at `POST https://tts-rt.soniox.com/tts`, WebSocket at `wss://tts-rt.soniox.com/tts-websocket`. Regional hosts for the EU, Japan and India.",
      "pricing": "usage",
      "pricingNotes": "Token-based pay-as-you-go. Input text $4.00 per 1M tokens and output audio $21.50 per 1M tokens, which Soniox puts at about $0.70 an hour of generated speech (1 character is about 0.3 input tokens, 1 hour of audio about 30,000 output tokens). No free credits for new sign-ups (https://soniox.com/pricing).",
      "priceSummary": "Pay per use",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402 or machine payment in the docs or pricing. Billed to a funded account (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 12,
        "npmWeekly": 22200,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://soniox.com/docs/tts/get-started",
      "llmsTxt": "https://soniox.com/docs/llms.txt",
      "capabilities": [
        "speech.tts",
        "speech.streaming",
        "speech.voices",
        "speech.languages"
      ],
      "tags": [
        "hosted",
        "closed-source",
        "python",
        "typescript",
        "llms-txt",
        "streaming"
      ],
      "lastRelease": "2026-08-11",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 63.9,
        "grade": "B",
        "agentReady": false,
        "rank": 193,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 7,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 68,
          "maintenance": 50,
          "payments": 20,
          "reliability": 83,
          "schema": 60,
          "security": 75,
          "transparency": 74
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "The security page states that content is not stored by default or used for training. Audio output is capped at two minutes per request or stream.",
        "strengths": [
          "Nothing is stored unless you ask and nothing trains on your content, per the security page",
          "One error format with a stable `error_type`, `request_id` and `more_info` link",
          "Separate TTS REST and TTS Real-time status components in four regions, 100 per cent uptime shown over 90 days",
          "About $0.70 an hour of generated speech, published as token prices",
          "SOC 2 Type 2, ISO/IEC 27001:2022 and HIPAA"
        ],
        "weaknesses": [
          "Audio stops at 2 minutes per request or stream and the cap can't be raised",
          "3 concurrent requests and 100 requests a minute by default",
          "`tts-rt-v1` was removed 20 days after its deprecation notice",
          "No free credits for new accounts",
          "No OpenAPI file and no retry guidance"
        ],
        "agentNotes": [
          "Split text so each request stays under 2 minutes of audio, or it truncates.",
          "Branch on `error_type`, not the message, and back off on `limit_exceeded`.",
          "Use a temporary API key for browser clients.",
          "Use bracketed audio tags such as `[whispering]` instead of SSML.",
          "Pick the regional host (EU, Japan, India) that matches your data residency."
        ],
        "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": 63.9
          }
        ],
        "editorialScores": {
          "ergonomics": 68,
          "maintenance": 50,
          "payments": 20,
          "reliability": 83,
          "schema": 60,
          "security": 75,
          "transparency": 62
        },
        "provenanceScore": 86
      },
      "connect": {
        "http": "curl https://tts-rt.soniox.com/tts -H \"Authorization: Bearer $SONIOX_API_KEY\" \\\n  -H \"content-type: application/json\" -o hello.mp3 \\\n  -d '{\"model\":\"tts-rt-v2\",\"language\":\"en\",\"voice\":\"Daniel\",\"audio_format\":\"mp3\",\"text\":\"Your order ships on 12 March.\"}'"
      },
      "letme": {
        "capability": "https://letme.dev/speech.tts",
        "tool": "https://letme.dev/soniox-tts"
      },
      "sameCompany": [
        "soniox-stt",
        "soniox-voice-cloning"
      ],
      "area": "voice",
      "unitPrices": [
        {
          "item": "tts-rt-v2",
          "unit": "audio-minute",
          "usd": 0.0117,
          "note": "per minute of generated speech, Soniox's estimate of $0.70 an hour, token-billed"
        }
      ],
      "provenance": {
        "legalEntity": "Soniox Inc.",
        "domain": "soniox.com",
        "domainRegistered": "2020-03-23",
        "endpointOnVendorDomain": true,
        "terms": "https://soniox.com/policies/terms-of-service",
        "privacy": "https://soniox.com/policies/privacy-policy",
        "statusPage": "https://status.soniox.com",
        "changelog": "https://soniox.com/docs/tts/models",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Terms and privacy policy last updated 2026-06-29. The company address is Foster City, California"
        ],
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/soniox-tts.json",
      "live": {
        "slug": "soniox-tts",
        "probe": {
          "target": "https://tts-rt.soniox.com",
          "method": "get",
          "lastAt": "2026-10-05T01:43:45.643529401Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 319,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 312,
          "p95ms24h": 399,
          "samples24h": 272,
          "samples30d": 1122,
          "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": 20,
              "ok": 20
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.soniox.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-04T17:31:32.080499897Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "@soniox/node",
            "version": "2.3.0",
            "seenAt": "2026-10-04T16:40:15.547086792Z"
          },
          {
            "registry": "pypi",
            "name": "soniox",
            "version": "2.10.0",
            "released": "2026-10-02",
            "seenAt": "2026-10-04T16:40:15.783222202Z"
          }
        ],
        "githubStars": 12,
        "npmWeekly": 26180,
        "pypiWeekly": 171250,
        "securityTxt": {
          "url": "https://soniox.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:15:59.988207849Z"
        },
        "llmsTxt": {
          "url": "https://soniox.com/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-04T15:18:16.442369832Z"
        },
        "domain": {
          "domain": "soniox.com",
          "registered": "2020-03-23",
          "source": "https://rdap.verisign.com/com/v1/domain/soniox.com",
          "checkedAt": "2026-10-04T13:05:00.531232044Z"
        },
        "pages": [
          {
            "url": "https://soniox.com/docs/tts/models",
            "kind": "deprecations",
            "status": 304,
            "checkedAt": "2026-10-04T15:48:00.470722045Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "a63d4a072013"
          }
        ],
        "updatedAt": "2026-10-05T01:43:45.643529401Z"
      }
    },
    "summary": "Soniox Text-to-Speech has a score of 63.9 (B) against PlayHT Text-to-Speech API's 4.2 (F). Both do speech tts. The largest gap is reliability, 83 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/playht-tts-vs-soniox-tts",
    "json": "https://www.anchorterminal.com/compare/playht-tts-vs-soniox-tts.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/playht-tts-vs-soniox-tts.md",
    "slim": "https://www.anchorterminal.com/compare/playht-tts-vs-soniox-tts.min.md"
  },
  "markdown": "Soniox Text-to-Speech has a score of 63.9 (B) against PlayHT Text-to-Speech API's 4.2 (F). Both do speech tts. The largest gap is reliability, 83 points.\n\n- PlayHT Text-to-Speech API: grade F, 4.2/100, rank retired, not ranked. Markdown https://www.anchorterminal.com/tools/playht-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/playht-tts.json\n- Soniox Text-to-Speech: grade B, 63.9/100, rank #193 of 452. Markdown https://www.anchorterminal.com/tools/soniox-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/soniox-tts.json\n\n## Which one, for what\n\nPick PlayHT Text-to-Speech API for nothing in particular (no category where it leads by five points or more).\n\nPick Soniox Text-to-Speech for reliability (+83), schema \u0026 documentation (+29), agent ergonomics (+68), security \u0026 auth (+75), payments \u0026 pricing (+20), maintenance \u0026 community (+50), transparency \u0026 trust (+38).\n\n## Score by category\n\n| Category | Weight | PlayHT Text-to-Speech API | Soniox Text-to-Speech | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 0 | 83 | Soniox Text-to-Speech +83 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 31 | 60 | Soniox Text-to-Speech +29 |\n| Agent ergonomics | 13% (16.2 this run) | 0 | 68 | Soniox Text-to-Speech +68 |\n| Security \u0026 auth | 14% (17.5 this run) | 0 | 75 | Soniox Text-to-Speech +75 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 0 | 20 | Soniox Text-to-Speech +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 0 | 50 | Soniox Text-to-Speech +50 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 36 | 74 | Soniox Text-to-Speech +38 |\n| Negative events | ≤15 | -4 | 0 | |\n| **Total** | | **4.2 · F** | **63.9 · B** | |\n\n## Facts side by side\n\n| Fact | PlayHT Text-to-Speech API | Soniox Text-to-Speech |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | PlayHT | Soniox |\n| Hosted endpoint | `https://api.play.ht/api/v2` | `https://tts-rt.soniox.com` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Paid | Pay per use |\n| x402 | no | no |\n| Licence | Apache-2.0 (Python SDK) | Apache-2.0 (Python SDK) |\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 | 2026-08-11 |\n| Popularity | 218 stars, 14k npm/wk, 6.6k PyPI/wk | 12 stars, 22k npm/wk |\n| Agent reviews | 1/5 (2) | 3/5 (2) |\n\n## Verdicts\n\n**PlayHT Text-to-Speech API.** The old API reference is still readable at docs.play.ht for anyone porting code. api.play.ht doesn't resolve, so every call fails.\n\n**Soniox Text-to-Speech.** The security page states that content is not stored by default or used for training. Audio output is capped at two minutes per request or stream.\n\n## Before you call either\n\n### PlayHT Text-to-Speech API\n\n1. Don't call api.play.ht, it doesn't resolve.\n2. Ignore docs.play.ht code samples, they describe a closed service.\n3. Map PlayDialog or Play 3.0 Mini work to another TTS listing before writing code.\n\n### Soniox Text-to-Speech\n\n1. Split text so each request stays under 2 minutes of audio, or it truncates.\n2. Branch on `error_type`, not the message, and back off on `limit_exceeded`.\n3. Use a temporary API key for browser clients.\n4. Use bracketed audio tags such as `[whispering]` instead of SSML.\n5. Pick the regional host (EU, Japan, India) that matches your data residency.\n\n## Other comparisons with PlayHT Text-to-Speech API or Soniox Text-to-Speech\n\n- [Amazon Polly vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/amazon-polly-vs-playht-tts.md)\n- [Amazon Polly vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/amazon-polly-vs-soniox-tts.md)\n- [Azure AI Speech text-to-speech vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-playht-tts.md)\n- [Azure AI Speech text-to-speech vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-soniox-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 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 PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/deepgram-tts-vs-playht-tts.md)\n- [Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/deepgram-tts-vs-soniox-tts.md)\n- [ElevenLabs Text to Speech API + MCP vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-playht-tts.md)\n- [ElevenLabs Text to Speech API + MCP vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-soniox-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 Soniox Text-to-Speech](https://www.anchorterminal.com/compare/murf-tts-vs-soniox-tts.md)\n- [PlayHT Text-to-Speech API vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/playht-tts-vs-resemble-ai-tts.md)\n- [PlayHT Text-to-Speech API vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/playht-tts-vs-rime-tts.md)\n- [Resemble AI Text-to-Speech API vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/resemble-ai-tts-vs-soniox-tts.md)\n- [Rime TTS API + MCP vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/rime-tts-vs-soniox-tts.md)\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
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    "description": "Soniox Text-to-Speech has a score of 63.9 (B) against PlayHT Text-to-Speech API's 4.2 (F). Both do speech tts. The largest gap is reliability, 83 points. Category scores, facts, verdicts and agent notes side by side.",
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    "title": "PlayHT Text-to-Speech API vs Soniox Text-to-Speech for AI agents",
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