{ "data": { "a": { "slug": "fish-audio-tts", "name": "Fish Audio TTS API", "vendor": "Fish Audio", "vendorUrl": "https://fish.audio", "kind": "model", "category": "text-to-speech", "summary": "Fish Audio's API turns text into speech with the `s2.1-pro` model in 83 languages, over a REST endpoint, a timestamped stream and a WebSocket that accepts text as it is produced.", "url": "https://www.anchorterminal.com/tools/fish-audio-tts", "markdownUrl": "https://www.anchorterminal.com/tools/fish-audio-tts.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/fish-audio-tts.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/fish-audio-tts.json", "repo": "https://github.com/fishaudio/fish-audio-python", "license": "Apache-2.0 (Python SDK), MIT (JavaScript SDK)", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.fish.audio", "packages": [ { "registry": "pypi", "name": "fish-audio-sdk" }, { "registry": "npm", "name": "fish-audio" } ], "auth": "mixed", "authNotes": "`Authorization: Bearer` API key created in the web app after a browser signup with email verification. A key takes a name and an optional expiry. The `model` request header selects the model. The hosted MCP server at `https://api.fish.audio/mcp` signs in by OAuth and is bound to one team (https://docs.fish.audio/developer-guide/getting-started/api-key, https://docs.fish.audio/overview/mcp).", "pricing": "usage", "pricingNotes": "$15 per million UTF-8 bytes of input text on `s2.1-pro`, `s2-pro` and `s1`, prepaid with no subscription or monthly minimum. `s2.1-pro-free` costs $0 under fair-use limits, and the changelog says it is free through 30 November 2026. An agent can start on the free model once a person has signed up. Whether a card is needed is not stated. Concurrency rises with total prepaid amount. MCP usage draws on web app plan credits, not API credits (https://docs.fish.audio/developer-guide/models-pricing/pricing-and-rate-limits).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs, the OpenAPI file or the pricing page (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 5213, "pypiWeekly": 34220, "asOf": "2026-10-09" }, "docsUrl": "https://docs.fish.audio/features/text-to-speech", "llmsTxt": "https://docs.fish.audio/llms.txt", "openapi": "https://docs.fish.audio/api-reference/openapi.json", "capabilities": [ "speech.tts", "speech.streaming", "speech.voices", "speech.languages", "voice.clone" ], "tags": [ "hosted", "usage-priced", "prepaid", "free-tier", "closed-source", "python", "typescript", "openapi", "llms-txt", "mcp", "streaming", "status-page", "open-weights" ], "lastRelease": "2026-09-23", "graded": true, "anchor": { "graded": true, "score": 60.7, "grade": "C", "agentReady": false, "rank": 453, "ranked": true, "rankOf": 842, "categoryRank": 8, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 67, "maintenance": 69, "payments": 30, "reliability": 75, "schema": 84, "security": 35, "transparency": 60 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "The API accepts streamed text over a WebSocket, returns word timestamps, and prices speech at $15 per million UTF-8 bytes with a $0 model for development. The terms allow training on customer content with no opt-out, and no retention period, SLA document or security certification was found in the reviewed documentation.", "bestFor": "Voice agents that stream LLM text into speech at a low per-byte price, multilingual output from one model, and teams moving from OpenAI or ElevenLabs request shapes.", "strengths": [ "Public OpenAPI 3.1 file, llms.txt, Markdown pages and two installable agent skills for the SDKs and the raw API", "WebSocket input takes text as it is produced, with `flush` and `stop` events and a variant that returns word timestamps", "`s2.1-pro-free` runs the production model at $0 under fair-use limits, through 30 November 2026", "OpenAI-compatible and ElevenLabs-compatible endpoints refuse unsupported options with a 4xx and send `Retry-After` on a 429", "S1 retirement was announced on 8 October 2026 for 31 December 2026, with a migration guide" ], "weaknesses": [ "The terms allow Usage Data and Content to train models, with no opt-out found", "An unrecognised `model` header falls back to paid `s2.1-pro` without an error", "The Text-to-Speech API status component shows downtime on 11 days in 90, the longest 58 minutes on 6 August 2026, mostly on the free model", "The published SDKs date from March 2026. `fish-audio` 0.1.0 on npm defaults to the deprecated `s1`", "No security.txt, certification, DPA text or sub-processor list found in the pages read" ], "agentNotes": [ "Send the `model` header on every request and check its spelling. A missing or unknown value is served and billed as `s2.1-pro`.", "Budget by UTF-8 bytes, not characters. Chinese, Japanese and Korean text costs about three bytes a character.", "Retry 429 and 5xx with exponential backoff. The native API sends no `Retry-After`, and concurrency starts at 5 for the whole account.", "Use `[bracket]` cues on the S2 family. `(parenthesis)` tags from `s1` are read aloud as text.", "Pass the model explicitly in the JavaScript SDK, because npm release 0.1.0 defaults to `s1`." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 60.7 } ], "editorialScores": { "ergonomics": 67, "maintenance": 69, "payments": 30, "reliability": 75, "schema": 84, "security": 35, "transparency": 44 }, "provenanceScore": 75 }, "connect": { "install": "pip install fish-audio-sdk", "http": "curl --request POST https://api.fish.audio/v1/tts \\\n --header \"Authorization: Bearer $FISH_API_KEY\" \\\n --header \"Content-Type: application/json\" \\\n --header \"model: s2.1-pro-free\" \\\n --data '{ \"text\": \"Hello from Fish Audio!\", \"format\": \"mp3\" }' \\\n --output hello.mp3", "claudeCode": "claude mcp add --transport http fish-audio https://api.fish.audio/mcp", "config": { "mcpServers": { "fish-audio": { "url": "https://api.fish.audio/mcp" } } } }, "letme": { "capability": "https://letme.dev/speech.tts", "tool": "https://letme.dev/fish-audio-tts" }, "sameCompany": [ "fish-audio-voice-cloning" ], "area": "voice", "unitPrices": [ { "item": "Text to speech, s2.1-pro", "unit": "1m-chars", "usd": 15, "note": "per million UTF-8 bytes of input text, not characters" }, { "item": "Text to speech, s2.1-pro-free", "unit": "1m-chars", "usd": 0, "note": "fair-use limits, free through 30 November 2026 per the changelog" } ], "provenance": { "legalEntity": "Hanabi AI Inc.", "domain": "fish.audio", "domainRegistered": "2023-12-11", "endpointOnVendorDomain": true, "terms": "https://fish.audio/terms/", "privacy": "https://fish.audio/privacy/", "statusPage": "https://status.fish.audio", "changelog": "https://docs.fish.audio/developer-guide/getting-started/changelog", "securityTxt": "none", "checked": "2026-10-09", "notes": [ "The Terms of Use (effective 18 August 2024) name Hanabi AI Inc., a Delaware corporation at 1111B S Governors Ave STE 48109, Dover, DE 19904, as the provider of the Services, and cover API keys.", "The Privacy Policy is dated 28 August 2024.", "https://fish.audio/.well-known/security.txt returned 404 on 2026-10-09.", "RDAP for fish.audio gives a registration date of 2023-12-11.", "The terms forbid crawling or scraping any page of the Services by manual or automated means. robots.txt on fish.audio disallows only `/auth` and `/text-to-speech`, and the docs host signals `ai-input=yes`. We read the terms, the privacy policy and the docs host, and no other fish.audio page." ], "score": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/fish-audio-tts.json", "live": { "slug": "fish-audio-tts", "probe": { "target": "https://api.fish.audio", "method": "get", "lastAt": "2026-10-09T11:46:28.727492974Z", "lastOk": true, "lastStatus": 404, "lastMs": 182, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 159, "p95ms24h": 210, "samples24h": 44, "samples30d": 44, "days": [ { "date": "2026-10-09", "probes": 44, "ok": 44 } ] }, "vendorStatus": { "page": "https://status.fish.audio", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:57:55.361055093Z" }, "updatedAt": "2026-10-09T11:46:28.727492974Z" } }, "answer": "Soniox Text-to-Speech scores 63.7 (B) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 4 of 7 scored categories. Fish Audio TTS API leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.", "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": 63.7, "grade": "B", "agentReady": false, "rank": 340, "ranked": true, "rankOf": 842, "categoryRank": 7, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 68, "maintenance": 50, "payments": 20, "reliability": 83, "schema": 60, "security": 75, "transparency": 72 }, "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.", "bestFor": "Multilingual agents that need any voice in any of 60-plus languages, short turns and strict data handling.", "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": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.7 } ], "editorialScores": { "ergonomics": 68, "maintenance": 50, "payments": 20, "reliability": 83, "schema": 60, "security": 75, "transparency": 62 }, "provenanceScore": 81 }, "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": 81 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/soniox-tts.json", "live": { "slug": "soniox-tts", "probe": { "target": "https://tts-rt.soniox.com", "method": "get", "lastAt": "2026-10-09T11:46:41.399604619Z", "lastOk": true, "lastStatus": 404, "lastMs": 306, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 317, "p95ms24h": 376, "samples24h": 259, "samples30d": 2311, "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": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 125, "ok": 125 } ] }, "vendorStatus": { "page": "https://status.soniox.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:39:11.788792364Z" }, "versions": [ { "registry": "npm", "name": "@soniox/node", "version": "2.3.0", "seenAt": "2026-10-08T16:29:54.509363425Z" }, { "registry": "pypi", "name": "soniox", "version": "2.10.0", "released": "2026-10-02", "seenAt": "2026-10-08T16:29:54.731087454Z" } ], "githubStars": 12, "npmWeekly": 26231, "pypiWeekly": 124290, "securityTxt": { "url": "https://soniox.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:50.110847376Z" }, "llmsTxt": { "url": "https://soniox.com/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:54.589979077Z" }, "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": "2026-10-08T18:24:33.536176426Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "a63d4a072013" } ], "updatedAt": "2026-10-09T11:46:41.399604619Z" } }, "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "Fish Audio", "b": "Soniox", "name": "Vendor" }, { "a": "https://api.fish.audio", "b": "https://tts-rt.soniox.com", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "not published", "b": "$0.0117 per minute of audio", "name": "Price for speech tts" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Apache-2.0 (Python SDK), MIT (JavaScript SDK)", "b": "Apache-2.0 (Python SDK)", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-23", "b": "2026-08-11", "name": "Last release" }, { "a": "2024-08-18", "b": "2026-06-29", "name": "Terms last updated" }, { "a": "2024-08-28", "b": "2026-06-29", "name": "Privacy policy last updated" }, { "a": "yes", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "5.2k npm/wk, 34k PyPI/wk", "b": "12 stars, 22k npm/wk", "name": "Popularity" }, { "a": "none", "b": "3/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "Soniox Text-to-Speech scores 63.7 (B) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 4 of 7 scored categories. Fish Audio TTS API leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.", "question": "Which is better for AI agents, Fish Audio TTS API or Soniox Text-to-Speech?" }, { "answer": "Fish Audio TTS API takes an API key or an OAuth sign-in. Soniox Text-to-Speech needs an API key.", "question": "Do Fish Audio TTS API and Soniox Text-to-Speech need an API key?" }, { "answer": "Yes. Fish Audio TTS API has a hosted endpoint at https://api.fish.audio and Soniox Text-to-Speech at https://tts-rt.soniox.com.", "question": "Can an agent call Fish Audio TTS API and Soniox Text-to-Speech without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 84 against 60", "Payments \u0026 pricing, 30 against 20", "Maintenance \u0026 community, 69 against 50" ], "also": null, "goodFor": "Voice agents that stream LLM text into speech at a low per-byte price, multilingual output from one model, and teams moving from OpenAI or ElevenLabs request shapes.", "slug": "fish-audio-tts", "watchFor": "The terms allow Usage Data and Content to train models, with no opt-out found" }, { "aheadOn": [ "Reliability, 83 against 75", "Security \u0026 auth, 75 against 35", "Transparency \u0026 trust, 72 against 60" ], "also": null, "goodFor": "Multilingual agents that need any voice in any of 60-plus languages, short turns and strict data handling.", "slug": "soniox-tts", "watchFor": "Audio stops at 2 minutes per request or stream and the cap can't be raised" } ], "job": { "capability": "speech.tts", "name": "Speech tts" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amazon-polly-vs-fish-audio-tts.json", "title": "Amazon Polly vs Fish Audio TTS API", "url": "https://www.anchorterminal.com/compare/amazon-polly-vs-fish-audio-tts" }, { "json": "https://www.anchorterminal.com/compare/amazon-polly-vs-soniox-tts.json", "title": "Amazon Polly vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/amazon-polly-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/azure-text-to-speech-vs-fish-audio-tts.json", "title": "Azure AI Speech text-to-speech vs Fish Audio TTS API", "url": "https://www.anchorterminal.com/compare/azure-text-to-speech-vs-fish-audio-tts" }, { "json": "https://www.anchorterminal.com/compare/azure-text-to-speech-vs-soniox-tts.json", "title": "Azure AI Speech text-to-speech vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/azure-text-to-speech-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/cartesia-tts-vs-fish-audio-tts.json", "title": "Cartesia Sonic TTS API + MCP vs Fish Audio TTS API", "url": "https://www.anchorterminal.com/compare/cartesia-tts-vs-fish-audio-tts" }, { "json": "https://www.anchorterminal.com/compare/cartesia-tts-vs-soniox-tts.json", "title": "Cartesia Sonic TTS API + MCP vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/cartesia-tts-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/deepgram-tts-vs-fish-audio-tts.json", "title": "Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Fish Audio TTS API", "url": "https://www.anchorterminal.com/compare/deepgram-tts-vs-fish-audio-tts" }, { "json": "https://www.anchorterminal.com/compare/deepgram-tts-vs-soniox-tts.json", "title": "Deepgram Text-to-Speech (Aura-2, Flux TTS) vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/deepgram-tts-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-tts-vs-fish-audio-tts.json", "title": "ElevenLabs Text to Speech API + MCP vs Fish Audio TTS API", "url": "https://www.anchorterminal.com/compare/elevenlabs-tts-vs-fish-audio-tts" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-tts-vs-soniox-tts.json", "title": "ElevenLabs Text to Speech API + MCP vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/elevenlabs-tts-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-murf-tts.json", "title": "Fish Audio TTS API vs Murf TTS API + MCP", "url": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-murf-tts" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-playht-tts.json", "title": "Fish Audio TTS API vs PlayHT Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-playht-tts" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-resemble-ai-tts.json", "title": "Fish Audio TTS API vs Resemble AI Text-to-Speech API", "url": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-resemble-ai-tts" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-rime-tts.json", "title": "Fish Audio TTS API vs Rime TTS API + MCP", "url": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-rime-tts" }, { "json": "https://www.anchorterminal.com/compare/murf-tts-vs-soniox-tts.json", "title": "Murf TTS API + MCP vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/murf-tts-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/playht-tts-vs-soniox-tts.json", "title": "PlayHT Text-to-Speech API vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/playht-tts-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-tts-vs-soniox-tts.json", "title": "Resemble AI Text-to-Speech API vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/resemble-ai-tts-vs-soniox-tts" }, { "json": "https://www.anchorterminal.com/compare/rime-tts-vs-soniox-tts.json", "title": "Rime TTS API + MCP vs Soniox Text-to-Speech", "url": "https://www.anchorterminal.com/compare/rime-tts-vs-soniox-tts" } ], "scores": [ { "by": 8, "edge": "soniox-tts", "fish-audio-tts": 75, "key": "reliability", "name": "Reliability", "soniox-tts": 83, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 24, "edge": "fish-audio-tts", "fish-audio-tts": 84, "key": "schema", "name": "Schema \u0026 documentation", "soniox-tts": 60, "weight": 13 }, { "by": 1, "edge": "soniox-tts", "fish-audio-tts": 67, "key": "ergonomics", "name": "Agent ergonomics", "soniox-tts": 68, "weight": 13 }, { "by": 40, "edge": "soniox-tts", "fish-audio-tts": 35, "key": "security", "name": "Security \u0026 auth", "soniox-tts": 75, "weight": 14 }, { "by": 10, "edge": "fish-audio-tts", "fish-audio-tts": 30, "key": "payments", "name": "Payments \u0026 pricing", "soniox-tts": 20, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 19, "edge": "fish-audio-tts", "fish-audio-tts": 69, "key": "maintenance", "name": "Maintenance \u0026 community", "soniox-tts": 50, "weight": 7 }, { "by": 12, "edge": "soniox-tts", "fish-audio-tts": 60, "key": "transparency", "name": "Transparency \u0026 trust", "soniox-tts": 72, "weight": 7 } ], "summary": "Soniox Text-to-Speech scores 63.7 (B) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 4 of 7 scored categories. Fish Audio TTS API leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do speech tts.", "verdicts": { "fish-audio-tts": "The API accepts streamed text over a WebSocket, returns word timestamps, and prices speech at $15 per million UTF-8 bytes with a $0 model for development. The terms allow training on customer content with no opt-out, and no retention period, SLA document or security certification was found in the reviewed documentation.", "soniox-tts": "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." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-soniox-tts", "json": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-soniox-tts.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-soniox-tts.md", "slim": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-soniox-tts.min.md" }, "markdown": "Soniox Text-to-Speech scores 63.7 (B) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 4 of 7 scored categories. Fish Audio TTS API leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do speech tts.\n\n- Fish Audio TTS API: grade C, 60.7/100, rank #453 of 842. Markdown https://www.anchorterminal.com/tools/fish-audio-tts.md · JSON https://www.anchorterminal.com/api/v1/tools/fish-audio-tts.json\n- Soniox Text-to-Speech: grade B, 63.7/100, rank #340 of 842. 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\n### Fish Audio TTS API (C)\n\nGood for: Voice agents that stream LLM text into speech at a low per-byte price, multilingual output from one model, and teams moving from OpenAI or ElevenLabs request shapes.\n\nAhead on:\n- Schema \u0026 documentation, 84 against 60\n- Payments \u0026 pricing, 30 against 20\n- Maintenance \u0026 community, 69 against 50\n\nWatch for: The terms allow Usage Data and Content to train models, with no opt-out found\n\n### Soniox Text-to-Speech (B)\n\nGood for: Multilingual agents that need any voice in any of 60-plus languages, short turns and strict data handling.\n\nAhead on:\n- Reliability, 83 against 75\n- Security \u0026 auth, 75 against 35\n- Transparency \u0026 trust, 72 against 60\n\nWatch for: Audio stops at 2 minutes per request or stream and the cap can't be raised\n\n\n## Score by category\n\n| Category | Weight | Fish Audio TTS API | Soniox Text-to-Speech | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 75 | 83 | Soniox Text-to-Speech +8 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 84 | 60 | Fish Audio TTS API +24 |\n| Agent ergonomics | 13% (16.2 this run) | 67 | 68 | Soniox Text-to-Speech +1 |\n| Security \u0026 auth | 14% (17.5 this run) | 35 | 75 | Soniox Text-to-Speech +40 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 20 | Fish Audio TTS API +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 69 | 50 | Fish Audio TTS API +19 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 60 | 72 | Soniox Text-to-Speech +12 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **60.7 · C** | **63.7 · B** | |\n\n## Facts side by side\n\n| Fact | Fish Audio TTS API | Soniox Text-to-Speech |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Fish Audio | Soniox |\n| Hosted endpoint | `https://api.fish.audio` | `https://tts-rt.soniox.com` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Pay per use | Pay per use |\n| Price for speech tts | not published | $0.0117 per minute of audio |\n| x402 | no | no |\n| Licence | Apache-2.0 (Python SDK), MIT (JavaScript SDK) | Apache-2.0 (Python SDK) |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-23 | 2026-08-11 |\n| Terms last updated | 2024-08-18 | 2026-06-29 |\n| Privacy policy last updated | 2024-08-28 | 2026-06-29 |\n| Customer content may train models | yes | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Popularity | 5.2k npm/wk, 34k PyPI/wk | 12 stars, 22k npm/wk |\n| Agent reviews | none | 3/5 (2) |\n\n## Verdicts\n\n**Fish Audio TTS API.** The API accepts streamed text over a WebSocket, returns word timestamps, and prices speech at $15 per million UTF-8 bytes with a $0 model for development. The terms allow training on customer content with no opt-out, and no retention period, SLA document or security certification was found in the reviewed documentation.\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### Fish Audio TTS API\n\n1. Send the `model` header on every request and check its spelling. A missing or unknown value is served and billed as `s2.1-pro`.\n2. Budget by UTF-8 bytes, not characters. Chinese, Japanese and Korean text costs about three bytes a character.\n3. Retry 429 and 5xx with exponential backoff. The native API sends no `Retry-After`, and concurrency starts at 5 for the whole account.\n4. Use `[bracket]` cues on the S2 family. `(parenthesis)` tags from `s1` are read aloud as text.\n5. Pass the model explicitly in the JavaScript SDK, because npm release 0.1.0 defaults to `s1`.\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## Questions\n\n### Which is better for AI agents, Fish Audio TTS API or Soniox Text-to-Speech?\n\nSoniox Text-to-Speech scores 63.7 (B) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 4 of 7 scored categories. Fish Audio TTS API leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.\n\n### Do Fish Audio TTS API and Soniox Text-to-Speech need an API key?\n\nFish Audio TTS API takes an API key or an OAuth sign-in. Soniox Text-to-Speech needs an API key.\n\n### Can an agent call Fish Audio TTS API and Soniox Text-to-Speech without installing anything?\n\nYes. Fish Audio TTS API has a hosted endpoint at https://api.fish.audio and Soniox Text-to-Speech at https://tts-rt.soniox.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/fish-audio-tts-vs-soniox-tts.json, and with the fewest tokens: https://www.anchorterminal.com/compare/fish-audio-tts-vs-soniox-tts.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"fish-audio-tts\", \"b\": \"soniox-tts\"}`. From a terminal: `anchor compare fish-audio-tts soniox-tts`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/fish-audio-tts.json and https://www.anchorterminal.com/api/v1/tools/soniox-tts.json\n\n## Other comparisons with Fish Audio TTS API or Soniox Text-to-Speech\n\n- [Amazon Polly vs Fish Audio TTS API](https://www.anchorterminal.com/compare/amazon-polly-vs-fish-audio-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 Fish Audio TTS API](https://www.anchorterminal.com/compare/azure-text-to-speech-vs-fish-audio-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 Fish Audio TTS API](https://www.anchorterminal.com/compare/cartesia-tts-vs-fish-audio-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 Fish Audio TTS API](https://www.anchorterminal.com/compare/deepgram-tts-vs-fish-audio-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 Fish Audio TTS API](https://www.anchorterminal.com/compare/elevenlabs-tts-vs-fish-audio-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- [Fish Audio TTS API vs Murf TTS API + MCP](https://www.anchorterminal.com/compare/fish-audio-tts-vs-murf-tts.md)\n- [Fish Audio TTS API vs PlayHT Text-to-Speech API](https://www.anchorterminal.com/compare/fish-audio-tts-vs-playht-tts.md)\n- [Fish Audio TTS API vs Resemble AI Text-to-Speech API](https://www.anchorterminal.com/compare/fish-audio-tts-vs-resemble-ai-tts.md)\n- [Fish Audio TTS API vs Rime TTS API + MCP](https://www.anchorterminal.com/compare/fish-audio-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- [PlayHT Text-to-Speech API vs Soniox Text-to-Speech](https://www.anchorterminal.com/compare/playht-tts-vs-soniox-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/", "generatedAt": "2026-10-09", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "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": "Fish Audio TTS API vs Soniox Text-to-Speech", "url": "" } ], "description": "Soniox Text-to-Speech scores 63.7 (B) on agent readiness against Fish Audio TTS API's 60.7 (C), and leads in 4 of 7 scored categories. Fish Audio TTS API leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do speech tts. Category scores, facts…", "facts": [ "Fish Audio TTS API C 60.7", "Soniox Text-to-Speech B 63.7", "scores" ], "h1": "Fish Audio TTS API vs Soniox Text-to-Speech", "image": "https://www.anchorterminal.com/assets/og/compare-fish-audio-tts-vs-soniox-tts.png", "path": "/compare/fish-audio-tts-vs-soniox-tts", "published": "2026-10-01", "section": "tools", "title": "Fish Audio TTS API vs Soniox Text-to-Speech for AI agents", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/fish-audio-tts-vs-soniox-tts" }, "tokens": { "markdown": 2350, "slim": 730 }, "version": 1 }