{ "data": { "a": { "slug": "elevenlabs-voice-cloning", "name": "ElevenLabs Voice Cloning and Voice Design API", "vendor": "ElevenLabs", "vendorUrl": "https://elevenlabs.io", "kind": "model", "category": "voice-cloning", "summary": "ElevenLabs' voice cloning service creates voices from audio samples. Professional cloning uses verified recordings, while Voice Design generates voices from text prompts.", "url": "https://www.anchorterminal.com/tools/elevenlabs-voice-cloning", "markdownUrl": "https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/elevenlabs-voice-cloning.json", "dns": "elevenlabs-voice-cloning.grade.anchorterminal.com", "repo": "https://github.com/elevenlabs/elevenlabs-python", "license": "MIT (SDKs)", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.elevenlabs.io/v1", "packages": [ { "registry": "npm", "name": "@elevenlabs/elevenlabs-js" }, { "registry": "pypi", "name": "elevenlabs" }, { "registry": "pypi", "name": "elevenlabs-mcp" } ], "auth": "api-key", "authNotes": "`xi-api-key` header. The hosted MCP server is scoped to Agents and Text to Speech and doesn't clone. The deprecated local `elevenlabs-mcp` server has `voice_clone` and `text_to_voice` tools.", "pricing": "freemium", "pricingNotes": "Instant Voice Cloning is included from Starter at $6 a month. Professional Voice Cloning needs Creator at $22 a month (1 PVC slot), Pro $99 (1), Scale $299 (3) or Business $990 (10). Voice Design is on every plan including Free and charges only the preview text as TTS characters. Speech from a clone is billed at normal TTS rates (https://elevenlabs.io/pricing).", "priceSummary": "$6 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 or machine payment in the docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 3122, "npmWeekly": 1063065, "pypiWeekly": 2223099, "asOf": "2026-09-30" }, "docsUrl": "https://elevenlabs.io/docs/eleven-creative/voices/voice-cloning", "llmsTxt": "https://elevenlabs.io/docs/llms.txt", "openapi": "https://api.elevenlabs.io/openapi.json", "capabilities": [ "voice.clone", "voice.design", "voice.consent", "speech.tts" ], "tags": [ "hosted", "freemium", "closed-source", "python", "typescript", "openapi", "llms-txt", "async-jobs", "enterprise" ], "lastRelease": "2026-10-27", "graded": true, "anchor": { "graded": true, "score": 76.8, "grade": "BB", "agentReady": true, "rank": 40, "ranked": true, "rankOf": 1486, "categoryRank": 2, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 88, "maintenance": 85, "payments": 30, "reliability": 73, "schema": 91, "security": 84, "transparency": 83 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "high", "date": "2026-11-01" }, "negative": 0, "verdict": "Instant clones from 1 to 2 minutes of audio on the $6 Starter plan. Instant clones rely on an attestation, not a check.", "bestFor": "Teams that need instant clones, professional clones and prompt-designed voices in one account, with consent checks on the professional tier.", "strengths": [ "Instant clones from 1 to 2 minutes of audio on the $6 Starter plan", "Professional clones gated by a spoken verification matched to the training audio", "Voice Design from a text prompt on every plan, including Free", "API keys scoped to endpoints, with credit quotas, IP allowlists and expiry", "History API with per-generation records, filterable by voice and date" ], "weaknesses": [ "Instant clones rely on an attestation, not a check", "Training on your content is on by default until switched off in settings", "Terms take a perpetual, irrevocable licence to User Voice Models", "Clones can't be exported", "Only 1 PVC slot until the $299 Scale plan" ], "agentNotes": [ "Keep the source samples. A clone can't be downloaded and re-cloning sounds slightly different", "Check `requires_verification` in the create response before using the voice ID", "List your own clones with `GET /v2/voices?category=cloned` instead of paging the whole library", "On `system_busy` retry with backoff. On a concurrency 429 (`too_many_concurrent_requests` or `concurrent_limit_exceeded`) queue instead, the plan cap won't lift", "PVC is asynchronous. Create, add samples, verify, train, then poll `fine_tuning_state`. For v4 voices, start with `clone_strength` 0, the documented default for most uses" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "high", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 76.8 } ], "editorialScores": { "ergonomics": 88, "maintenance": 85, "payments": 30, "reliability": 73, "schema": 91, "security": 84, "transparency": 75 }, "provenanceScore": 91, "checked": { "categories": { "ergonomics": "2026-11-01", "maintenance": "2026-11-01", "payments": "2026-11-01", "reliability": "2026-11-01", "schema": "2026-11-01", "security": "2026-11-01", "transparency": "2026-11-01" }, "last": "2026-11-01", "lastMoved": "2026-11-01", "oldest": "2026-11-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl -X POST https://api.elevenlabs.io/v1/voices/add -H \"xi-api-key: $ELEVENLABS_API_KEY\" \\\n -F name=\"Support voice\" -F files=@sample.mp3", "config": { "mcpServers": { "elevenlabs": { "args": [ "elevenlabs-mcp" ], "command": "uvx", "env": { "ELEVENLABS_API_KEY": "${ELEVENLABS_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/voice.clone", "tool": "https://letme.dev/elevenlabs-voice-cloning" }, "sameCompany": [ "elevenlabs-music", "elevenlabs-scribe", "elevenlabs-tts", "elevenlabs-agents" ], "area": "voice", "unitPrices": [ { "item": "Starter plan", "unit": "month", "usd": 6, "note": "Instant Voice Cloning, $1 first month (83 per cent off) shown on 1 November 2026" }, { "item": "Creator plan", "unit": "month", "usd": 22, "note": "1 PVC slot, $11 first month" }, { "item": "Scale plan", "unit": "month", "usd": 299, "note": "3 PVC slots" }, { "item": "Business plan", "unit": "month", "usd": 990, "note": "10 PVC slots" } ], "provenance": { "legalEntity": "Eleven Labs Inc.", "domain": "elevenlabs.io", "domainRegistered": "2021-12-15", "endpointOnVendorDomain": true, "terms": "https://elevenlabs.io/terms-of-use", "privacy": "https://elevenlabs.io/privacy-policy", "statusPage": "https://status.elevenlabs.io", "changelog": "https://elevenlabs.io/docs/changelog", "securityTxt": "valid", "checked": "2026-09-30", "score": 91 }, "requirements": { "setupChecked": true, "complianceChecked": true, "card": "paid-only", "freeTier": true, "minutes": 8, "credential": "api-key", "hosting": [ "US", "EU", "APAC" ], "euResidency": "enterprise", "trainsOnData": "opt-out", "zeroRetention": "enterprise", "certifications": [ "SOC 2 Type II", "HIPAA (BAA available)", "GDPR" ], "dpa": true, "selfHost": "no" }, "pageJsonUrl": "https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.json", "live": { "slug": "elevenlabs-voice-cloning", "probe": { "target": "https://api.elevenlabs.io/v1", "method": "get", "lastAt": "2026-11-07T18:20:23.054614018Z", "lastOk": true, "lastStatus": 404, "lastMs": 158, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 127, "p95ms24h": 193, "samples24h": 239, "samples30d": 7910, "days": [ { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 251, "ok": 251 }, { "date": "2026-10-29", "probes": 248, "ok": 248 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.elevenlabs.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:21:05.013753269Z" }, "versions": [ { "registry": "github", "name": "elevenlabs/elevenlabs-python", "version": "v2.77.0", "released": "2026-11-06", "seenAt": "2026-11-06T23:23:54.035968494Z" }, { "registry": "npm", "name": "@elevenlabs/elevenlabs-js", "version": "2.77.0", "seenAt": "2026-11-06T23:23:51.780381975Z" }, { "registry": "pypi", "name": "elevenlabs", "version": "2.77.0", "released": "2026-11-06", "seenAt": "2026-11-06T23:23:52.016036128Z" }, { "registry": "pypi", "name": "elevenlabs-mcp", "version": "0.12.2", "released": "2026-08-04", "seenAt": "2026-11-06T23:23:52.155560042Z" } ], "githubStars": 3174, "npmWeekly": 1372717, "pypiWeekly": 2780548, "securityTxt": { "url": "https://elevenlabs.io/.well-known/security.txt", "state": "valid", "expires": "2027-10-06T00:00:00.000Z", "checkedAt": "2026-11-07T16:01:30.458873656Z" }, "llmsTxt": { "url": "https://elevenlabs.io/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:29.07359Z" }, "domain": { "domain": "elevenlabs.io", "checkedAt": "2026-11-01T14:12:37.895521288Z" }, "pages": [ { "url": "https://elevenlabs.io/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:09:14.825467659Z", "changedAt": "2026-11-07T14:09:14.825467659Z", "fingerprint": "8b16c7ea7fd4" } ], "github": { "repo": "elevenlabs/elevenlabs-python", "checkedAt": "2026-11-02T08:46:10.308861891Z", "stars": 3170, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-30T19:21:45Z", "openIssues": 20, "openPRs": 35, "issuesOpened90d": 13, "issuesClosed90d": 7, "prsMerged90d": 33, "ci": { "branch": "main", "runs": 50, "success": 49, "failure": 1, "other": 0, "latest": "success", "latestAt": "2026-10-27T23:12:03Z" }, "replies": { "sampled": 25, "unanswered": 8, "medianDays": 2.3 } }, "updatedAt": "2026-11-07T18:21:05.013753269Z" } }, "answer": "ElevenLabs Voice Cloning and Voice Design API scores 76.8 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in every scored category.", "b": { "slug": "smallest-voice-clone", "name": "Smallest.ai Instant Voice Clone", "vendor": "Smallest, Inc.", "vendorUrl": "https://smallest.ai", "kind": "model", "category": "voice-cloning", "summary": "Smallest.ai's instant voice cloning API creates a reusable voice for its Lightning text-to-speech models from a 5 to 15 second sample in one multipart POST, returning the voice ID and sample clips of the cloned voice.", "url": "https://www.anchorterminal.com/tools/smallest-voice-clone", "markdownUrl": "https://www.anchorterminal.com/tools/smallest-voice-clone.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/smallest-voice-clone.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json", "dns": "smallest-voice-clone.grade.anchorterminal.com", "license": "Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI", "transports": [ "http" ], "remoteUrl": "https://api.smallest.ai/waves/v1/voice-cloning", "packages": [ { "registry": "pypi", "name": "smallestai" } ], "auth": "api-key", "authNotes": "Bearer API key created in the Smallest dashboard after a browser signup, shown once, revoked by deleting it. Keys have no scopes. Short-lived access tokens minted from a key work on TTS, STT and speech-to-speech routes but are not accepted on the cloning endpoint.", "pricing": "usage", "pricingNotes": "No price per clone is published. Speech from a clone is about $0.175 per 10,000 characters on Lightning v3.1 and $0.195 on v3.1 Pro, pay as you go. The agents pricing page states $10 in free credits. The models pricing table marks voice cloning No on pay as you go, while the docs let any API key clone (checked 2026-11-06).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, llms.txt or the pricing pages (checked 2026-11-06).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://docs.smallest.ai/models/voice-cloning/instant-clone-api", "llmsTxt": "https://docs.smallest.ai/llms.txt", "capabilities": [ "voice.clone", "speech.tts" ], "tags": [ "hosted", "official", "closed-source", "usage", "python", "llms-txt", "status-page", "enterprise", "data-residency" ], "lastRelease": "2026-10-29", "graded": true, "anchor": { "graded": true, "score": 58, "grade": "C", "agentReady": false, "rank": 768, "ranked": true, "rankOf": 1486, "categoryRank": 8, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 62, "maintenance": 72, "payments": 20, "reliability": 65, "schema": 70, "security": 48, "transparency": 72 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "One multipart POST clones a voice from 5 to 15 seconds of audio and returns sample clips, with dated deprecation notices and current changelog entries. The endpoint still defaults to a model whose clones stop working on 30 November 2026, there's no consent field or clone price, and the status feed shows frequent short API outages.", "bestFor": "Teams already on Smallest's Lightning TTS or voice agents who want a clone from a short clip in one call.", "strengths": [ "Synchronous clone from 5 to 15 seconds of audio that returns the voice ID and signed URLs to sample clips of the new voice", "Seven documented error cases with causes, including `voice_clone_timeout` and `voice_clone_error` codes", "A deprecation page dates every retirement and gives the migration steps for clones", "The Terms say customer content isn't used for training, and India and USA region hostnames are documented", "llms.txt and a Markdown copy of every docs page" ], "weaknesses": [ "The endpoint defaults to `lightning-v3.1`, whose clones stop working on 30 November 2026", "No consent or verification field, and no price per clone or clone limit published", "The pricing table marks voice cloning unavailable on pay as you go, while the docs let any key clone", "status.smallest.ai lists dozens of short API outages in 90 days, with a cluster across every region on 13 to 17 September 2026", "No idempotency key, no pagination on the clone list, and plain unscoped API keys" ], "agentNotes": [ "Always pass `model=lightning-v3.1-pro`. The default `lightning-v3.1` clones stop working on 30 November 2026", "Use the returned `voiceId` with the matching TTS model and check `modelIds` from `GET /waves/v1/voice-cloning` if a TTS call returns a tiny WAV", "Before retrying a `voice_clone_timeout`, list clones by `displayName` so a retry doesn't create a duplicate", "Send the server API key, not an access token. The cloning endpoint refuses short-lived tokens", "Keep TTS calls from a clone to one at a time on the self-serve plan and back off on 429" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 58 } ], "editorialScores": { "ergonomics": 62, "maintenance": 72, "payments": 20, "reliability": 65, "schema": 70, "security": 48, "transparency": 57 }, "provenanceScore": 87, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install smallestai", "http": "curl -X POST \"https://api.smallest.ai/waves/v1/voice-cloning\" \\\n -H \"Authorization: Bearer $SMALLEST_API_KEY\" \\\n -F \"displayName=my-custom-voice\" \\\n -F \"file=@/path/to/sample.wav\" \\\n -F \"model=lightning-v3.1-pro\" \\\n -F \"language=en\"" }, "letme": { "capability": "https://letme.dev/voice.clone", "tool": "https://letme.dev/smallest-voice-clone" }, "sameCompany": [ "smallest-pulse-stt", "smallest-lightning-tts" ], "area": "voice", "unitPrices": [ { "item": "Speech from a clone, Lightning v3.1", "unit": "1m-chars", "usd": 17.5, "note": "about $0.175 per 10,000 characters, pay as you go" }, { "item": "Speech from a clone, Lightning v3.1 Pro", "unit": "1m-chars", "usd": 19.5, "note": "about $0.195 per 10,000 characters, pay as you go" } ], "provenance": { "legalEntity": "Smallest, Inc.", "domain": "smallest.ai", "domainRegistered": "2023-09-02", "endpointOnVendorDomain": true, "terms": "https://smallest.ai/terms-of-service", "privacy": "https://smallest.ai/privacy-policy", "statusPage": "https://status.smallest.ai", "changelog": "https://docs.smallest.ai/changelog/models", "securityTxt": "valid", "checked": "2026-11-06", "notes": [ "The Terms of Service (effective 21 October 2026) name Smallest, Inc. under California law with arbitration. The Privacy Policy and Prohibited Use Policy are effective 18 September 2026.", "The Prohibited Use Policy bars data mining, robots or scraping except as the site's robots.txt allows. smallest.ai/robots.txt allows ClaudeBot and all agents on the pages read and sets `Content-Signal: ai-train=yes, search=yes, ai-input=yes`.", "security.txt at smallest.ai/.well-known/security.txt is valid until 31 December 2026, with security@smallest.ai.", "RDAP gives smallest.ai a registration date of 2 September 2023.", "trust.smallest.ai did not answer through our proxy (502) and smallest.ai/security returns 404." ], "score": 87 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/smallest-voice-clone.json", "live": { "slug": "smallest-voice-clone", "probe": { "target": "https://api.smallest.ai/waves/v1/voice-cloning", "method": "get", "lastAt": "2026-11-07T18:20:55.191256377Z", "lastOk": true, "lastStatus": 401, "lastMs": 378, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 361, "p95ms24h": 429, "samples24h": 200, "samples30d": 200, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 13 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.smallest.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:48:45.839717169Z" }, "versions": [ { "registry": "pypi", "name": "smallestai", "version": "5.14.0", "released": "2026-10-07", "seenAt": "2026-11-07T00:06:42.794457962Z" } ], "pypiWeekly": 850, "securityTxt": { "url": "https://smallest.ai/.well-known/security.txt", "state": "valid", "expires": "2026-12-31T23:59:59.000Z", "checkedAt": "2026-11-07T16:01:21.76871346Z" }, "llmsTxt": { "url": "https://docs.smallest.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:34:00.872777157Z" }, "updatedAt": "2026-11-07T18:20:55.191256377Z" } }, "edges": [ { "by": 36, "category": "security", "leads": "elevenlabs-voice-cloning", "name": "Security \u0026 auth", "reasons": { "a": "Graded for voice cloning, with consent and misuse controls in place of the read-only line and training and retention of voice data in place of the prompt-injection line, since the API returns audio and IDs rather than third-party text. API keys can be limited to chosen endpoints, given a credit quota, user keys can expire after 15 minutes to 30 days, service-account keys exist and accept an expiry of up to 90 days since 26 October, keys can be limited to IP ranges, and leaked keys are disabled through GitHub secret scanning (30). PVC is own-voice only and needs a spoken verification matched to the samples, IVC relies on an attestation, high-risk and celebrity voices are blocked, and an AI speech classifier and C2PA support are public (14 of 20). Training on content is on by default with a self-serve opt-out, and the privacy policy caps voice data retention at 3 years after the last interaction (10 of 15). The History API lists each generation with voice, model, characters and date (15). security.txt valid to 2027-10-06 (re-read on 1 November, contact elevenlabs.io/security/report) with a disclosure programme, SOC 2 Type II, and a trust centre at compliance.elevenlabs.io, no paid bug bounty found (15 of 20).", "b": "Graded for voice cloning as the other listings in this category, with consent and misuse controls in place of the read-only line and training and retention of voice data in place of the prompt-injection line. Plain bearer keys, shown once, revocable, with rotation guidance and no scopes. Short-lived access tokens are refused on the cloning endpoint (20 of 30). No consent or verification field. The Terms let Smallest demand proof that the speaker authorised a clone and remove voices without it, and the prohibited use policy bars unauthorised impersonation. No watermark found (6 of 20). The Terms say Smallest won't use User Content or Input to train its services. Zero retention and retention windows are Enterprise options, and no retention period for samples is published (9 of 15). A usage dashboard, with no audit log found (5 of 15). A valid security.txt naming security@smallest.ai and a HIPAA business associate agreement page. The trust centre didn't answer through our proxy, so no certification was confirmed first-hand, and no bug bounty was found (8 of 20). 20+6+9+5+8 = 48." }, "scores": { "a": 84, "b": 48 } }, { "by": 26, "category": "ergonomics", "leads": "elevenlabs-voice-cloning", "name": "Agent ergonomics", "reasons": { "a": "Creating a clone returns only `voice_id` and `requires_verification`, and `GET /v2/voices` can be narrowed to personal or cloned voices (25). Cursor pagination with `page_size` up to 100 and filters by type, category, fine-tuning state and labels (20). Errors carry a `type`, a named code and a `param` for validation failures, with recovery hints on many codes such as `voice_not_found`, `invalid_cursor` and `concurrent_modification`, though the two concurrency codes in different pages disagree (18 of 20, up from 15). No idempotency key, PVC exposes `fine_tuning_state` to poll (10 of 20). Two required fields for an instant clone, and official Python and TypeScript SDKs among others (15).", "b": "The clone response is a compact object with the voice ID, status and signed URLs to sample clips rather than inline audio (20 of 25). The list call returns every clone on the organisation with no pagination or filter found (10 of 20). Errors carry a message and, on 500, an `error_code` enum with a stated fix, such as retrying `voice_clone_timeout` (16 of 20). No idempotency key, and retrying a timeout can leave a duplicate clone, with deletion through an oddly named route (4 of 20). Two required fields. The Python SDK `smallestai` 5.14.0 is current, while the npm package `smallestai` was last published on 16 April 2025 (12 of 15). 20+10+16+4+12 = 62." }, "scores": { "a": 88, "b": 62 } }, { "by": 21, "category": "schema", "leads": "elevenlabs-voice-cloning", "name": "Schema \u0026 documentation", "reasons": { "a": "Public OpenAPI at api.elevenlabs.io/openapi.json, 313 paths per the 6 October check, not re-read on 17 October or 1 November because api.elevenlabs.io's robots.txt now disallows every path (25). llms.txt and Markdown docs, with a `.md` twin of every page (10). The cloning guides say when to use IVC or PVC and warn that more than 3 minutes of IVC audio can make a clone worse (16 of 20). Inputs are typed, but `labels` is a free-form map (11 of 15). Plenty of examples, and an errors reference in the API docs lists 10 error types with their HTTP statuses and about 70 named codes, though endpoint pages in the OpenAPI still list only 200 and 422 (14 of 15, up from 10, which read the codes as living only in help-centre articles). Versioned paths (`/v1`, `/v2`) and a changelog published several times a month, the latest entries dated 12, 19 and 26 October (15).", "b": "The API reference pages are generated with typed fields, enums and error schemas, but no OpenAPI file was found linked from the docs or llms.txt (5 of 25). llms.txt and a Markdown copy of every page (10). The guide says when to use the Pro pool, how to check `modelIds` before synthesis and why a mismatched clone returns empty audio, while the reference still names the retiring default (14 of 20). `model` and `language` are enums validated by the server, with required `displayName` and `file`, a 5 MB limit and MIME types listed, and `tags` as a comma-separated string (12 of 15). Examples in curl, Python and Node.js and a table of seven error cases with causes (14 of 15). Paths under `/v1`, a deprecation page with dated statuses and a models changelog with entries on 21, 24, 26, 28 and 29 October 2026 (15). 5+10+14+12+14+15 = 70." }, "scores": { "a": 91, "b": 70 } }, { "by": 13, "category": "maintenance", "leads": "elevenlabs-voice-cloning", "name": "Maintenance \u0026 community", "reasons": { "a": "Python and JavaScript SDK 2.75.0, tagged on 27 October 2026 (23:02 UTC), after 2.74.0 and 2.74.1 on 20 October and 2.73.1 on 17 October (30). Changelog entries weekly, on 5, 12, 19 and 26 October, and seven Python SDK releases in October (20). Public changelog and a help centre, and SDK issues get labels, but the ten newest open issues showed no maintainer replies on 1 October, per the 1 October check, not re-read since (10 of 15). Current official SDKs (15). The Python SDK supports 3.8 and later and shipped five days before this check (10).", "b": "Read as a model, on the lines the other hosted cloning listings use (recency 30, dated releases 10, deprecation notice 10, support 15, SDKs 15, health 10). The models changelog has entries dated 29 October 2026 (30). Entries on 21, 24, 26, 28 and 29 October and in September (10). The deprecation page dates each retirement, such as `lightning-v3.1` and its clones on 30 November 2026 with steps to migrate, though when the clone retirement was first announced wasn't found (7 of 10). Public changelog, support@smallest.ai and a Discord server, with no evidence read of how they answer (10 of 15). `smallestai` on PyPI released 5.12.3 to 5.14.0 between 1 and 7 October 2026, from a repository under fern-demo. The npm package is stale (10 of 15). Package repositories weren't cloned (5 of 10). 30+10+7+10+10+5 = 72." }, "scores": { "a": 85, "b": 72 } }, { "by": 11, "category": "transparency", "leads": "elevenlabs-voice-cloning", "name": "Transparency \u0026 trust", "reasons": { "a": "Closed service with clear terms, SDKs under MIT (15 of 30). Privacy policy updated 9 October 2026 (unchanged on 1 November), still with a 3 year retention cap for voice data and a training opt-out under Data use, a DPA, subprocessors through the compliance portal and a training opt-out that matches the Terms, but the Terms (last updated 9 October 2026, unchanged on 1 November) also take a perpetual, irrevocable licence to User Voice Models while promising deletion on request, which sit uneasily together (25 of 30). Dated deprecations in the changelog, no written notice policy found (15 of 20). Data locations named (United States, the Netherlands, Singapore) and Enterprise residency in the EU, India and Singapore (20).", "b": "Closed service with clear terms naming Smallest, Inc. under California law, effective 21 October 2026 (15 of 30). The Terms rule out training on customer content, the Privacy Policy (18 September 2026) gives retention criteria but no periods, and the Zero Data Retention page is specific about Enterprise options, with nothing on how long cloning samples are kept (16 of 30). A deprecation page with dated statuses (deprecated, rejects, removed, scheduled, retiring) and migration targets (16 of 20). Two regions named with locations. No sub-processor list was found and a DPA page exists unread (10 of 20). 15+16+16+10 = 57." }, "scores": { "a": 83, "b": 72 } }, { "by": 10, "category": "payments", "leads": "elevenlabs-voice-cloning", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402 (0). Per-unit prices for speech from a clone are public, such as $0.08 per 1,000 characters for TTS v4 on the API pricing page (20). The Free plan needs no card, per the 6 October check (the pricing page read on 1 November doesn't say either way), and includes Voice Design, but no cloning (10 of 20). Signup is a human browser flow (0).", "b": "No x402, MPP or L402 (0). Per-character TTS prices are public, about $0.175 per 10,000 characters on Lightning v3.1, but no price per clone is published and the models pricing table marks voice cloning No on pay as you go, against the docs (10). The agents pricing page states $10 in free credits, and whether a card is needed wasn't established (10 of 20). A person signs up in a browser and creates the key in the dashboard (0). 0+10+10+0 = 20." }, "scores": { "a": 30, "b": 20 } } ], "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "ElevenLabs", "b": "Smallest, Inc.", "name": "Vendor" }, { "a": "https://api.elevenlabs.io/v1", "b": "https://api.smallest.ai/waves/v1/voice-cloning", "name": "Hosted endpoint" }, { "a": "HTTP, stdio", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "not published", "b": "$17.50 per 1M characters", "name": "Price for voice cloning" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT (SDKs)", "b": "Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-27", "b": "2026-10-29", "name": "Last release" }, { "a": "2026-03-31", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-05-20", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "yes, with an opt-out", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "3.1k stars, 1.1M npm/wk, 2.2M PyPI/wk", "b": "none", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "ElevenLabs Voice Cloning and Voice Design API scores 76.8 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in every scored category.", "question": "Which is better for AI agents, ElevenLabs Voice Cloning and Voice Design API or Smallest.ai Instant Voice Clone?" }, { "answer": "Both need an API key.", "question": "Do ElevenLabs Voice Cloning and Voice Design API and Smallest.ai Instant Voice Clone need an API key?" }, { "answer": "Yes. ElevenLabs Voice Cloning and Voice Design API has a hosted endpoint at https://api.elevenlabs.io/v1 and Smallest.ai Instant Voice Clone at https://api.smallest.ai/waves/v1/voice-cloning.", "question": "Can an agent call ElevenLabs Voice Cloning and Voice Design API and Smallest.ai Instant Voice Clone without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 73 against 65", "Schema \u0026 documentation, 91 against 70", "Agent ergonomics, 88 against 62", "Security \u0026 auth, 84 against 48", "Payments \u0026 pricing, 30 against 20", "Maintenance \u0026 community, 85 against 72", "Transparency \u0026 trust, 83 against 72" ], "also": [ "Agent-ready, a grade of BB or better", "Runs on your own machine" ], "goodFor": "Teams that need instant clones, professional clones and prompt-designed voices in one account, with consent checks on the professional tier.", "slug": "elevenlabs-voice-cloning", "watchFor": "Instant clones rely on an attestation, not a check" }, { "aheadOn": null, "also": null, "goodFor": "Teams already on Smallest's Lightning TTS or voice agents who want a clone from a short clip in one call.", "slug": "smallest-voice-clone", "watchFor": "The endpoint defaults to `lightning-v3.1`, whose clones stop working on 30 November 2026" } ], "history": { "elevenlabs-voice-cloning": [ { "causes": [ "correction" ], "date": "2026-11-01", "delta": 2, "from": 74.8, "fromGrade": "BB", "to": 76.8, "toGrade": "BB" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0, "from": 74.8, "fromGrade": "BB", "to": 74.8, "toGrade": "BB" }, { "causes": [ "evidence" ], "date": "2026-10-17", "delta": 1.2, "from": 73.6, "fromGrade": "BB", "to": 74.8, "toGrade": "BB" } ], "smallest-voice-clone": null }, "job": { "capability": "voice.clone", "name": "Voice cloning" }, "others": [ { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-elevenlabs-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs ElevenLabs Voice Cloning and Voice Design API", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-elevenlabs-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-smallest-voice-clone.json", "title": "Cartesia Voice Cloning API + MCP vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-fish-audio-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Fish Audio Voice Cloning API", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-fish-audio-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-gradium-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Gradium Voice Cloning and Voice Design", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-gradium-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-hume-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Hume Octave Voice Design and Cloning + MCP", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-hume-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-inworld-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Inworld Instant Voice Cloning", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-inworld-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-minimax-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs MiniMax Voice Clone and Voice Design", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-minimax-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-murf-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Murf Voice Cloning API", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-murf-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-playht-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs PlayHT Voice Cloning API", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-playht-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-resemble-ai-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-soniox-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Soniox Voice Cloning", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-soniox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-speechify-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-speechify-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-ultravox-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Ultravox Voice Cloning", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-ultravox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-smallest-voice-clone.json", "title": "Fish Audio Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-smallest-voice-clone.json", "title": "Gradium Voice Cloning and Voice Design vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone.json", "title": "Hume Octave Voice Design and Cloning + MCP vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-smallest-voice-clone.json", "title": "Inworld Instant Voice Cloning vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone.json", "title": "MiniMax Voice Clone and Voice Design vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone.json", "title": "Murf Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone.json", "title": "PlayHT Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.json", "title": "Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-soniox-voice-cloning.json", "title": "Smallest.ai Instant Voice Clone vs Soniox Voice Cloning", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-soniox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.json", "title": "Smallest.ai Instant Voice Clone vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-ultravox-voice-cloning.json", "title": "Smallest.ai Instant Voice Clone vs Ultravox Voice Cloning", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-ultravox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.json", "title": "Smallest.ai Instant Voice Clone vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio" } ], "panel": null, "scores": [ { "by": 8, "edge": "elevenlabs-voice-cloning", "elevenlabs-voice-cloning": 73, "key": "reliability", "name": "Reliability", "smallest-voice-clone": 65, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 21, "edge": "elevenlabs-voice-cloning", "elevenlabs-voice-cloning": 91, "key": "schema", "name": "Schema \u0026 documentation", "smallest-voice-clone": 70, "weight": 13 }, { "by": 26, "edge": "elevenlabs-voice-cloning", "elevenlabs-voice-cloning": 88, "key": "ergonomics", "name": "Agent ergonomics", "smallest-voice-clone": 62, "weight": 13 }, { "by": 36, "edge": "elevenlabs-voice-cloning", "elevenlabs-voice-cloning": 84, "key": "security", "name": "Security \u0026 auth", "smallest-voice-clone": 48, "weight": 14 }, { "by": 10, "edge": "elevenlabs-voice-cloning", "elevenlabs-voice-cloning": 30, "key": "payments", "name": "Payments \u0026 pricing", "smallest-voice-clone": 20, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 13, "edge": "elevenlabs-voice-cloning", "elevenlabs-voice-cloning": 85, "key": "maintenance", "name": "Maintenance \u0026 community", "smallest-voice-clone": 72, "weight": 7 }, { "by": 11, "edge": "elevenlabs-voice-cloning", "elevenlabs-voice-cloning": 83, "key": "transparency", "name": "Transparency \u0026 trust", "smallest-voice-clone": 72, "weight": 7 } ], "summary": "ElevenLabs Voice Cloning and Voice Design API scores 76.8 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in every scored category. Both do voice cloning.", "tasks": null, "tutorials": [ { "title": "Create an instant voice clone with ElevenLabs", "tool": "elevenlabs-voice-cloning", "url": "https://www.anchorterminal.com/tutorials/elevenlabs-voice-cloning/" } ], "verdicts": { "elevenlabs-voice-cloning": "Instant clones from 1 to 2 minutes of audio on the $6 Starter plan. Instant clones rely on an attestation, not a check.", "smallest-voice-clone": "One multipart POST clones a voice from 5 to 15 seconds of audio and returns sample clips, with dated deprecation notices and current changelog entries. The endpoint still defaults to a model whose clones stop working on 30 November 2026, there's no consent field or clone price, and the status feed shows frequent short API outages." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone", "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.min.md" }, "markdown": "ElevenLabs Voice Cloning and Voice Design API scores 76.8 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in every scored category. Both do voice cloning.\n\n- ElevenLabs Voice Cloning and Voice Design API: grade BB, 76.8/100, rank #40 of 1486. Markdown https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/elevenlabs-voice-cloning.json\n- Smallest.ai Instant Voice Clone: grade C, 58/100, rank #768 of 1486. Markdown https://www.anchorterminal.com/tools/smallest-voice-clone.md · JSON https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json\n- Best voice cloning and custom voice APIs for AI agents: https://www.anchorterminal.com/best/voice-cloning/index.md\n- All 133 cloning comparisons: https://www.anchorterminal.com/compare/voice-cloning/index.md\n\n## Which one, for what\n\n### ElevenLabs Voice Cloning and Voice Design API (BB)\n\nGood for: Teams that need instant clones, professional clones and prompt-designed voices in one account, with consent checks on the professional tier.\n\nAhead on:\n- Reliability, 73 against 65\n- Schema \u0026 documentation, 91 against 70\n- Agent ergonomics, 88 against 62\n- Security \u0026 auth, 84 against 48\n- Payments \u0026 pricing, 30 against 20\n- Maintenance \u0026 community, 85 against 72\n- Transparency \u0026 trust, 83 against 72\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- Runs on your own machine\n\nWatch for: Instant clones rely on an attestation, not a check\n\n### Smallest.ai Instant Voice Clone (C)\n\nGood for: Teams already on Smallest's Lightning TTS or voice agents who want a clone from a short clip in one call.\n\nWatch for: The endpoint defaults to `lightning-v3.1`, whose clones stop working on 30 November 2026\n\n\n## Why the edge\n\n### Security \u0026 auth: ElevenLabs Voice Cloning and Voice Design API +36\n\n- ElevenLabs Voice Cloning and Voice Design API (84): Graded for voice cloning, with consent and misuse controls in place of the read-only line and training and retention of voice data in place of the prompt-injection line, since the API returns audio and IDs rather than third-party text. API keys can be limited to chosen endpoints, given a credit quota, user keys can expire after 15 minutes to 30 days, service-account keys exist and accept an expiry of up to 90 days since 26 October, keys can be limited to IP ranges, and leaked keys are disabled through GitHub secret scanning (30). PVC is own-voice only and needs a spoken verification matched to the samples, IVC relies on an attestation, high-risk and celebrity voices are blocked, and an AI speech classifier and C2PA support are public (14 of 20). Training on content is on by default with a self-serve opt-out, and the privacy policy caps voice data retention at 3 years after the last interaction (10 of 15). The History API lists each generation with voice, model, characters and date (15). security.txt valid to 2027-10-06 (re-read on 1 November, contact elevenlabs.io/security/report) with a disclosure programme, SOC 2 Type II, and a trust centre at compliance.elevenlabs.io, no paid bug bounty found (15 of 20).\n- Smallest.ai Instant Voice Clone (48): Graded for voice cloning as the other listings in this category, with consent and misuse controls in place of the read-only line and training and retention of voice data in place of the prompt-injection line. Plain bearer keys, shown once, revocable, with rotation guidance and no scopes. Short-lived access tokens are refused on the cloning endpoint (20 of 30). No consent or verification field. The Terms let Smallest demand proof that the speaker authorised a clone and remove voices without it, and the prohibited use policy bars unauthorised impersonation. No watermark found (6 of 20). The Terms say Smallest won't use User Content or Input to train its services. Zero retention and retention windows are Enterprise options, and no retention period for samples is published (9 of 15). A usage dashboard, with no audit log found (5 of 15). A valid security.txt naming security@smallest.ai and a HIPAA business associate agreement page. The trust centre didn't answer through our proxy, so no certification was confirmed first-hand, and no bug bounty was found (8 of 20). 20+6+9+5+8 = 48.\n\n### Agent ergonomics: ElevenLabs Voice Cloning and Voice Design API +26\n\n- ElevenLabs Voice Cloning and Voice Design API (88): Creating a clone returns only `voice_id` and `requires_verification`, and `GET /v2/voices` can be narrowed to personal or cloned voices (25). Cursor pagination with `page_size` up to 100 and filters by type, category, fine-tuning state and labels (20). Errors carry a `type`, a named code and a `param` for validation failures, with recovery hints on many codes such as `voice_not_found`, `invalid_cursor` and `concurrent_modification`, though the two concurrency codes in different pages disagree (18 of 20, up from 15). No idempotency key, PVC exposes `fine_tuning_state` to poll (10 of 20). Two required fields for an instant clone, and official Python and TypeScript SDKs among others (15).\n- Smallest.ai Instant Voice Clone (62): The clone response is a compact object with the voice ID, status and signed URLs to sample clips rather than inline audio (20 of 25). The list call returns every clone on the organisation with no pagination or filter found (10 of 20). Errors carry a message and, on 500, an `error_code` enum with a stated fix, such as retrying `voice_clone_timeout` (16 of 20). No idempotency key, and retrying a timeout can leave a duplicate clone, with deletion through an oddly named route (4 of 20). Two required fields. The Python SDK `smallestai` 5.14.0 is current, while the npm package `smallestai` was last published on 16 April 2025 (12 of 15). 20+10+16+4+12 = 62.\n\n### Schema \u0026 documentation: ElevenLabs Voice Cloning and Voice Design API +21\n\n- ElevenLabs Voice Cloning and Voice Design API (91): Public OpenAPI at api.elevenlabs.io/openapi.json, 313 paths per the 6 October check, not re-read on 17 October or 1 November because api.elevenlabs.io's robots.txt now disallows every path (25). llms.txt and Markdown docs, with a `.md` twin of every page (10). The cloning guides say when to use IVC or PVC and warn that more than 3 minutes of IVC audio can make a clone worse (16 of 20). Inputs are typed, but `labels` is a free-form map (11 of 15). Plenty of examples, and an errors reference in the API docs lists 10 error types with their HTTP statuses and about 70 named codes, though endpoint pages in the OpenAPI still list only 200 and 422 (14 of 15, up from 10, which read the codes as living only in help-centre articles). Versioned paths (`/v1`, `/v2`) and a changelog published several times a month, the latest entries dated 12, 19 and 26 October (15).\n- Smallest.ai Instant Voice Clone (70): The API reference pages are generated with typed fields, enums and error schemas, but no OpenAPI file was found linked from the docs or llms.txt (5 of 25). llms.txt and a Markdown copy of every page (10). The guide says when to use the Pro pool, how to check `modelIds` before synthesis and why a mismatched clone returns empty audio, while the reference still names the retiring default (14 of 20). `model` and `language` are enums validated by the server, with required `displayName` and `file`, a 5 MB limit and MIME types listed, and `tags` as a comma-separated string (12 of 15). Examples in curl, Python and Node.js and a table of seven error cases with causes (14 of 15). Paths under `/v1`, a deprecation page with dated statuses and a models changelog with entries on 21, 24, 26, 28 and 29 October 2026 (15). 5+10+14+12+14+15 = 70.\n\n### Maintenance \u0026 community: ElevenLabs Voice Cloning and Voice Design API +13\n\n- ElevenLabs Voice Cloning and Voice Design API (85): Python and JavaScript SDK 2.75.0, tagged on 27 October 2026 (23:02 UTC), after 2.74.0 and 2.74.1 on 20 October and 2.73.1 on 17 October (30). Changelog entries weekly, on 5, 12, 19 and 26 October, and seven Python SDK releases in October (20). Public changelog and a help centre, and SDK issues get labels, but the ten newest open issues showed no maintainer replies on 1 October, per the 1 October check, not re-read since (10 of 15). Current official SDKs (15). The Python SDK supports 3.8 and later and shipped five days before this check (10).\n- Smallest.ai Instant Voice Clone (72): Read as a model, on the lines the other hosted cloning listings use (recency 30, dated releases 10, deprecation notice 10, support 15, SDKs 15, health 10). The models changelog has entries dated 29 October 2026 (30). Entries on 21, 24, 26, 28 and 29 October and in September (10). The deprecation page dates each retirement, such as `lightning-v3.1` and its clones on 30 November 2026 with steps to migrate, though when the clone retirement was first announced wasn't found (7 of 10). Public changelog, support@smallest.ai and a Discord server, with no evidence read of how they answer (10 of 15). `smallestai` on PyPI released 5.12.3 to 5.14.0 between 1 and 7 October 2026, from a repository under fern-demo. The npm package is stale (10 of 15). Package repositories weren't cloned (5 of 10). 30+10+7+10+10+5 = 72.\n\n### Transparency \u0026 trust: ElevenLabs Voice Cloning and Voice Design API +11\n\n- ElevenLabs Voice Cloning and Voice Design API (83): Closed service with clear terms, SDKs under MIT (15 of 30). Privacy policy updated 9 October 2026 (unchanged on 1 November), still with a 3 year retention cap for voice data and a training opt-out under Data use, a DPA, subprocessors through the compliance portal and a training opt-out that matches the Terms, but the Terms (last updated 9 October 2026, unchanged on 1 November) also take a perpetual, irrevocable licence to User Voice Models while promising deletion on request, which sit uneasily together (25 of 30). Dated deprecations in the changelog, no written notice policy found (15 of 20). Data locations named (United States, the Netherlands, Singapore) and Enterprise residency in the EU, India and Singapore (20).\n- Smallest.ai Instant Voice Clone (72): Closed service with clear terms naming Smallest, Inc. under California law, effective 21 October 2026 (15 of 30). The Terms rule out training on customer content, the Privacy Policy (18 September 2026) gives retention criteria but no periods, and the Zero Data Retention page is specific about Enterprise options, with nothing on how long cloning samples are kept (16 of 30). A deprecation page with dated statuses (deprecated, rejects, removed, scheduled, retiring) and migration targets (16 of 20). Two regions named with locations. No sub-processor list was found and a DPA page exists unread (10 of 20). 15+16+16+10 = 57.\n\n### Payments \u0026 pricing: ElevenLabs Voice Cloning and Voice Design API +10\n\n- ElevenLabs Voice Cloning and Voice Design API (30): No x402, MPP or L402 (0). Per-unit prices for speech from a clone are public, such as $0.08 per 1,000 characters for TTS v4 on the API pricing page (20). The Free plan needs no card, per the 6 October check (the pricing page read on 1 November doesn't say either way), and includes Voice Design, but no cloning (10 of 20). Signup is a human browser flow (0).\n- Smallest.ai Instant Voice Clone (20): No x402, MPP or L402 (0). Per-character TTS prices are public, about $0.175 per 10,000 characters on Lightning v3.1, but no price per clone is published and the models pricing table marks voice cloning No on pay as you go, against the docs (10). The agents pricing page states $10 in free credits, and whether a card is needed wasn't established (10 of 20). A person signs up in a browser and creates the key in the dashboard (0). 0+10+10+0 = 20.\n\n## Score by category\n\n| Category | Weight | ElevenLabs Voice Cloning and Voice Design API | Smallest.ai Instant Voice Clone | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 73 | 65 | ElevenLabs Voice Cloning and Voice Design API +8 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 91 | 70 | ElevenLabs Voice Cloning and Voice Design API +21 |\n| Agent ergonomics | 13% (16.2 this run) | 88 | 62 | ElevenLabs Voice Cloning and Voice Design API +26 |\n| Security \u0026 auth | 14% (17.5 this run) | 84 | 48 | ElevenLabs Voice Cloning and Voice Design API +36 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 20 | ElevenLabs Voice Cloning and Voice Design API +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 72 | ElevenLabs Voice Cloning and Voice Design API +13 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 83 | 72 | ElevenLabs Voice Cloning and Voice Design API +11 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **76.8 · BB** | **58 · C** | |\n\n## Facts side by side\n\n| Fact | ElevenLabs Voice Cloning and Voice Design API | Smallest.ai Instant Voice Clone |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | ElevenLabs | Smallest, Inc. |\n| Hosted endpoint | `https://api.elevenlabs.io/v1` | `https://api.smallest.ai/waves/v1/voice-cloning` |\n| Transports | HTTP, stdio | HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Pay per use |\n| Price for voice cloning | not published | $17.50 per 1M characters |\n| x402 | no | no |\n| Licence | MIT (SDKs) | Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-27 | 2026-10-29 |\n| Terms last updated | 2026-03-31 | no date given |\n| Privacy policy last updated | 2026-05-20 | no date given |\n| Customer content may train models | yes, with an opt-out | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | yes | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 3.1k stars, 1.1M npm/wk, 2.2M PyPI/wk | none |\n| Agent reviews | 3.5/5 (2) | none |\n\n## How the scores have moved\n\n### ElevenLabs Voice Cloning and Voice Design API\n\n- +2.0 on 1 November 2026: correction\n- no change on 27 October 2026: checklist\n- +1.2 on 17 October 2026: new evidence\n\n### Smallest.ai Instant Voice Clone\n\nNo score change since it was listed.\n\n## Verdicts\n\n**ElevenLabs Voice Cloning and Voice Design API.** Instant clones from 1 to 2 minutes of audio on the $6 Starter plan. Instant clones rely on an attestation, not a check.\n\n**Smallest.ai Instant Voice Clone.** One multipart POST clones a voice from 5 to 15 seconds of audio and returns sample clips, with dated deprecation notices and current changelog entries. The endpoint still defaults to a model whose clones stop working on 30 November 2026, there's no consent field or clone price, and the status feed shows frequent short API outages.\n\n## Before you call either\n\n### ElevenLabs Voice Cloning and Voice Design API\n\n1. Keep the source samples. A clone can't be downloaded and re-cloning sounds slightly different\n2. Check `requires_verification` in the create response before using the voice ID\n3. List your own clones with `GET /v2/voices?category=cloned` instead of paging the whole library\n4. On `system_busy` retry with backoff. On a concurrency 429 (`too_many_concurrent_requests` or `concurrent_limit_exceeded`) queue instead, the plan cap won't lift\n5. PVC is asynchronous. Create, add samples, verify, train, then poll `fine_tuning_state`. For v4 voices, start with `clone_strength` 0, the documented default for most uses\n\n### Smallest.ai Instant Voice Clone\n\n1. Always pass `model=lightning-v3.1-pro`. The default `lightning-v3.1` clones stop working on 30 November 2026\n2. Use the returned `voiceId` with the matching TTS model and check `modelIds` from `GET /waves/v1/voice-cloning` if a TTS call returns a tiny WAV\n3. Before retrying a `voice_clone_timeout`, list clones by `displayName` so a retry doesn't create a duplicate\n4. Send the server API key, not an access token. The cloning endpoint refuses short-lived tokens\n5. Keep TTS calls from a clone to one at a time on the self-serve plan and back off on 429\n\n## Tutorials\n\n- [Create an instant voice clone with ElevenLabs](https://www.anchorterminal.com/tutorials/elevenlabs-voice-cloning/), for ElevenLabs Voice Cloning and Voice Design API\n\n## Questions\n\n### Which is better for AI agents, ElevenLabs Voice Cloning and Voice Design API or Smallest.ai Instant Voice Clone?\n\nElevenLabs Voice Cloning and Voice Design API scores 76.8 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in every scored category.\n\n### Do ElevenLabs Voice Cloning and Voice Design API and Smallest.ai Instant Voice Clone need an API key?\n\nBoth need an API key.\n\n### Can an agent call ElevenLabs Voice Cloning and Voice Design API and Smallest.ai Instant Voice Clone without installing anything?\n\nYes. ElevenLabs Voice Cloning and Voice Design API has a hosted endpoint at https://api.elevenlabs.io/v1 and Smallest.ai Instant Voice Clone at https://api.smallest.ai/waves/v1/voice-cloning.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.json, and with the fewest tokens: https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"elevenlabs-voice-cloning\", \"b\": \"smallest-voice-clone\"}`. From a terminal: `anchor compare elevenlabs-voice-cloning smallest-voice-clone`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/elevenlabs-voice-cloning.json and https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json\n\n## Other comparisons with ElevenLabs Voice Cloning and Voice Design API or Smallest.ai Instant Voice Clone\n\n- [Cartesia Voice Cloning API + MCP vs ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-elevenlabs-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-smallest-voice-clone.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Fish Audio Voice Cloning API](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-fish-audio-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Gradium Voice Cloning and Voice Design](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-gradium-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-hume-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Inworld Instant Voice Cloning](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-inworld-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs MiniMax Voice Clone and Voice Design](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-minimax-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Murf Voice Cloning API](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-murf-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 Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-resemble-ai-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-soniox-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-speechify-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- [ElevenLabs Voice Cloning and Voice Design API vs VoiceStudio](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio.md)\n- [Fish Audio Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-smallest-voice-clone.md)\n- [Gradium Voice Cloning and Voice Design vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-smallest-voice-clone.md)\n- [Hume Octave Voice Design and Cloning + MCP vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone.md)\n- [Inworld Instant Voice Cloning vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-smallest-voice-clone.md)\n- [MiniMax Voice Clone and Voice Design vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone.md)\n- [Murf Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone.md)\n- [PlayHT Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone.md)\n- [Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.md)\n- [Smallest.ai Instant Voice Clone vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/smallest-voice-clone-vs-soniox-voice-cloning.md)\n- [Smallest.ai Instant Voice Clone vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.md)\n- [Smallest.ai Instant Voice Clone vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/smallest-voice-clone-vs-ultravox-voice-cloning.md)\n- [Smallest.ai Instant Voice Clone vs VoiceStudio](https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "ElevenLabs Voice Cloning and Voice Design API vs Smallest.ai Instant Voice Clone", "url": "" } ], "description": "ElevenLabs Voice Cloning and Voice Design scores 76.8 (BB) to Smallest.ai Instant Voice Clone's 58 (C) for voice cloning. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "ElevenLabs Voice Cloning and Voice Design API BB 76.8", "Smallest.ai Instant Voice Clone C 58", "scores" ], "h1": "ElevenLabs Voice Cloning and Voice Design API vs Smallest.ai Instant Voice Clone", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone", "published": "2026-10-01", "section": "tools", "title": "ElevenLabs Voice Cloning and Voice Design API vs Smallest.ai Instant…", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone" }, "tokens": { "markdown": 5750, "slim": 3180 }, "version": 1 }