{ "data": { "a": { "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": 772, "ranked": true, "rankOf": 1510, "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": "2026-11-07T19:22:33.544970142Z", "lastOk": true, "lastStatus": 401, "lastMs": 362, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 362, "p95ms24h": 429, "samples24h": 210, "samples30d": 210, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 13 }, { "date": "2026-11-07", "probes": 197, "ok": 197 } ] }, "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": "2026-11-07T19:22:33.544970142Z" } }, "answer": "Speechify API Voice Cloning scores 76.9 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in 6 of 7 scored categories.", "b": { "slug": "speechify-voice-cloning", "name": "Speechify API Voice Cloning", "vendor": "Speechify", "vendorUrl": "https://speechify.ai", "kind": "model", "category": "voice-cloning", "summary": "Zero-shot voice cloning on the SpeechifyAI API from a 10 to 30 second sample, with verified spoken consent.", "url": "https://www.anchorterminal.com/tools/speechify-voice-cloning", "markdownUrl": "https://www.anchorterminal.com/tools/speechify-voice-cloning.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/speechify-voice-cloning.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/speechify-voice-cloning.json", "dns": "speechify-voice-cloning.grade.anchorterminal.com", "repo": "https://github.com/speechify-ai/sdk-python", "license": "MIT (SDKs)", "transports": [ "http" ], "remoteUrl": "https://api.speechify.ai/v1", "packages": [ { "registry": "pypi", "name": "speechify-api" }, { "registry": "npm", "name": "@speechify/api" } ], "auth": "api-key", "authNotes": "`Authorization: Bearer` API key. Keys can be scoped (voices, audio, write) and pinned to a project. Dated API versions through the `Speechify-Version` header.", "pricing": "paid", "pricingNotes": "Cloning needs a paid plan. Starter $10 a month includes 1.9M characters then $10 per 1M, Pro $99 includes 13.5M then $8 per 1M and has no clone limit, Scale $499 includes 78M then $6 per 1M, on Simba 3.0 and 3.2. Simba 3.5 lists at $20, $16 and $12 per 1M and is billed at the lower rates until 21 November 2026. Free ($0, 500K characters) can't clone. No per-clone fee. Speech from a clone is billed as normal characters (https://speechify.ai/pricing).", "priceSummary": "$10 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 or machine payment in the docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 3, "npmWeekly": 1926, "pypiWeekly": 6476, "asOf": "2026-09-30" }, "docsUrl": "https://docs.speechify.ai/build/guides/voice-cloning/overview", "llmsTxt": "https://docs.speechify.ai/llms.txt", "openapi": "https://docs.speechify.ai/openapi.json", "capabilities": [ "voice.clone", "voice.consent", "speech.tts" ], "tags": [ "hosted", "card-required", "closed-source", "python", "typescript", "openapi", "llms-txt", "watermark", "status-page" ], "lastRelease": "2026-10-29", "graded": true, "anchor": { "graded": true, "score": 76.9, "grade": "BB", "agentReady": true, "rank": 37, "ranked": true, "rankOf": 1510, "categoryRank": 1, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 97, "maintenance": 75, "payments": 20, "reliability": 90, "schema": 94, "security": 87, "transparency": 75 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-01" }, "negative": -3, "negativeNotes": [ "-3: 7 October 2026. `POST /v1/voices` and `POST /v1/voices/consent-challenges` began returning 403 `voice_cloning_unavailable_in_region` to requests from jurisdictions Speechify doesn't name, located by the calling IP, announced in the changelog the day it took effect, with no API version change. Existing voices keep working and the block follows stated legal obligations, so the lowest deduction for a breaking change shipped without notice (https://docs.speechify.ai/build/changelog/2026/10/7)." ], "verdict": "Verified consent on every clone, phrase and speaker matched, recording kept, and clones speak 48 languages on Simba 3.5. No cloning on the Free plan, and cloning is refused from unnamed jurisdictions.", "bestFor": "Best where a consent record and a published destruction schedule for voice data matter, such as cloning staff or talent voices for a product.", "strengths": [ "Verified consent on every clone, phrase and speaker matched, recording kept", "A published destruction schedule for voice samples and models, 30 days after deletion and at most 24 months after last use", "Scoped service-account keys, minted child keys capped at 24 hours and a 90-day project access audit trail", "429 with `Retry-After`, named error codes, published rate limits and `Idempotency-Key` on voice creation", "Watermarked output with a detection endpoint" ], "weaknesses": [ "No cloning on the Free plan", "Simba 3.5, the model that gives clones 48 languages, lists at twice the Simba 3.0 rate from 21 November 2026", "Cloning is refused from unnamed jurisdictions since 7 October, judged by the calling server's IP and announced the same day", "API terms forbid end-user uploads, which the consent guide presents as a supported flow", "No public DPA or subprocessor list found, and no retention period for TTS inputs and outputs" ], "agentNotes": [ "Create the consent challenge only when the speaker is ready, and show the phrase word for word as returned. It's single use and short-lived, and rewording fails the match", "Send an `Idempotency-Key` on `POST /v1/voices` so a lost response can be replayed without spending the challenge", "List clones with `GET /v1/voices?type=personal` so the shared catalogue doesn't fill the context", "On 429 wait for `Retry-After`, then check `error.code` to tell a rate limit from a concurrency cap", "Treat 403 `voice_cloning_unavailable_in_region` as final from that server. It follows the caller's IP, and no key, plan or retry lifts it" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 8, "avgRating": 3.6, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 76.9 } ], "editorialScores": { "ergonomics": 97, "maintenance": 75, "payments": 20, "reliability": 90, "schema": 94, "security": 87, "transparency": 63 }, "provenanceScore": 86, "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": "2026-10-27", "oldest": "2026-11-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl -X POST https://api.speechify.ai/v1/voices/consent-challenges \\\n -H \"Authorization: Bearer $SPEECHIFY_API_KEY\" -H \"content-type: application/json\" \\\n -d '{\"full_name\":\"Jane Doe\"}'" }, "letme": { "capability": "https://letme.dev/voice.clone", "tool": "https://letme.dev/speechify-voice-cloning" }, "area": "voice", "unitPrices": [ { "item": "Starter plan", "unit": "month", "usd": 10, "note": "1.9M characters, cloning included" }, { "item": "Pro plan", "unit": "month", "usd": 99, "note": "13.5M characters, no clone limit" }, { "item": "Scale plan", "unit": "month", "usd": 499, "note": "78M characters" }, { "item": "Speech from a clone on Scale", "unit": "1m-chars", "usd": 6, "note": "after the included balance on Simba 3.0 and 3.2, $10 on Starter and $8 on Pro. Simba 3.5 lists at $12 on Scale, billed at $6 until 21 November 2026" } ], "provenance": { "legalEntity": "Speechify, Inc.", "domain": "speechify.ai", "domainRegistered": "2023-01-24", "endpointOnVendorDomain": true, "terms": "https://speechify.com/terms-ai-voice-api/", "privacy": "https://speechify.com/privacy", "statusPage": "https://status.speechify.ai", "changelog": "https://docs.speechify.ai/build/changelog", "securityTxt": "valid", "checked": "2026-11-01", "notes": [ "The AI Voice API terms supplement the general terms at https://speechify.com/terms, which are shared with the Speechify reader app", "security.txt at speechify.ai/.well-known/security.txt names security@speechify.ai, points to speechify.ai/trust and on 2026-11-01 expired 2027-11-01, a year from the fetch (2027-10-17 when read on 2026-10-17).", "The trust page at speechify.ai/trust claims SOC 2 Type II and no training on customer data. The biometric data policy at speechify.ai/biometric-data-policy is effective 2026-10-06." ], "score": 86 }, "requirements": { "setupChecked": true, "complianceChecked": true, "card": "yes", "freeTier": true, "minutes": 10, "credential": "api-key", "hosting": [ "US" ], "euResidency": "unknown", "trainsOnData": "no", "zeroRetention": "unknown", "certifications": [ "SOC 2 Type II" ], "dpa": true, "selfHost": "no" }, "pageJsonUrl": "https://www.anchorterminal.com/tools/speechify-voice-cloning.json", "live": { "slug": "speechify-voice-cloning", "probe": { "target": "https://api.speechify.ai/v1", "method": "get", "lastAt": "2026-11-07T19:22:35.058586404Z", "lastOk": true, "lastStatus": 404, "lastMs": 251, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 143, "p95ms24h": 400, "samples24h": 238, "samples30d": 7920, "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": 250, "ok": 250 }, { "date": "2026-10-29", "probes": 249, "ok": 249 }, { "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": 197, "ok": 197 } ] }, "vendorStatus": { "page": "https://status.speechify.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:48:47.839714519Z" }, "versions": [ { "registry": "github", "name": "speechify-ai/sdk-python", "version": "5.0.0", "released": "2026-10-29", "seenAt": "2026-11-07T00:07:29.014135802Z" }, { "registry": "npm", "name": "@speechify/api", "version": "5.0.0", "seenAt": "2026-11-07T00:07:28.09449181Z" }, { "registry": "pypi", "name": "speechify-api", "version": "5.0.0", "released": "2026-10-29", "seenAt": "2026-11-07T00:07:27.79262001Z" } ], "githubStars": 3, "npmWeekly": 12586, "pypiWeekly": 8929, "securityTxt": { "url": "https://speechify.ai/.well-known/security.txt", "state": "valid", "expires": "2027-11-07T15:11:41.785Z", "checkedAt": "2026-11-07T15:59:40.146684101Z" }, "llmsTxt": { "url": "https://docs.speechify.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:34:00.375681756Z" }, "domain": { "domain": "speechify.ai", "registered": "2023-01-24", "source": "https://rdap.identitydigital.services/rdap/domain/speechify.ai", "checkedAt": "2026-11-01T14:21:33.267966139Z" }, "pages": [ { "url": "https://docs.speechify.ai/build/changelog", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:08:05.79301797Z", "changedAt": "2026-10-28T04:16:33.355685307Z", "fingerprint": "9bd1660d5601" }, { "url": "https://docs.speechify.ai/build/changelog/2026/10/17", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:08:08.476243313Z", "changedAt": "2026-10-28T04:16:36.180604293Z", "fingerprint": "05ac75cec652" }, { "url": "https://docs.speechify.ai/build/changelog/2026/10/7", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:08:10.499702037Z", "changedAt": "2026-10-28T04:16:37.76721881Z", "fingerprint": "be8f4b09ccac" }, { "url": "https://docs.speechify.ai/build/changelog/2026/9/21", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:08:12.220350317Z", "changedAt": "2026-10-28T04:16:40.067345219Z", "fingerprint": "04386b9241c9" }, { "url": "https://docs.speechify.ai/build/changelog/2026/9/23", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:08:14.190971776Z", "changedAt": "2026-10-28T04:16:41.768613283Z", "fingerprint": "4ed0a51875f8" }, { "url": "https://speechify.ai/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-11-07T14:20:28.482585855Z", "changedAt": "2026-11-05T13:04:49.420587532Z", "fingerprint": "befd9c79c48a" }, { "url": "https://speechify.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:20:29.062639741Z", "changedAt": "2026-11-06T13:41:56.050855769Z", "fingerprint": "85d97a31af51" }, { "url": "https://speechify.com/terms-ai-voice-api/", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:20:31.32257707Z", "changedAt": "2026-10-08T18:24:39.006829501Z", "fingerprint": "f7201b0d9c76" } ], "github": { "repo": "speechify-ai/sdk-python", "checkedAt": "2026-11-02T09:26:58.188244954Z", "stars": 3, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-29T15:11:33Z", "openIssues": 1, "openPRs": 2, "issuesOpened90d": 1, "issuesClosed90d": 0, "prsMerged90d": 9, "ci": { "branch": "main", "runs": 9, "success": 9, "failure": 0, "other": 0, "latest": "success", "latestAt": "2026-10-29T14:06:32Z" }, "replies": { "sampled": 3, "unanswered": 1, "medianDays": 133.8 } }, "updatedAt": "2026-11-07T19:22:35.058586404Z" } }, "edges": [ { "by": 39, "category": "security", "leads": "speechify-voice-cloning", "name": "Security \u0026 auth", "reasons": { "a": "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.", "b": "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. Service-account keys with scopes (`voices:read`, `voices:write`, `audio:all`), rotation with a grace window, and minted child keys capped at 24 hours (30). Every clone needs a single-use consent challenge, the speaker reads the phrase, and the create call is refused unless the words and speaker match, plus output watermarking with a detection endpoint (20). The trust page says Speechify never trains on customer data. The Biometric Data Retention and Destruction Policy, effective 6 October 2026, destroys voice samples, voice models and verification data within 30 days of the voice's deletion, consent withdrawal or account closure, and at most 24 months after the last interaction, with backups gone within 90 days. Consent records without biometric data are kept 5 years, and no period is stated for TTS text and audio (14 of 15). Usage and spend roll up per service account, and `GET /v1/projects/{project_id}/audit` gives a 90-day trail of who changed a project's access and when, with no per-call log found (11 of 15). security.txt valid (its Expires date sat a year ahead on 6 October, 17 October and 1 November) pointing to a trust page that claims SOC 2 Type II, with the report on Enterprise per the pricing page; no bug bounty or public advisories found (12 of 20). 30 + 20 + 14 + 11 + 12 = 87." }, "scores": { "a": 48, "b": 87 } }, { "by": 35, "category": "ergonomics", "leads": "speechify-voice-cloning", "name": "Agent ergonomics", "reasons": { "a": "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.", "b": "Creating a voice returns a compact voice object, and `GET /v1/voices` takes `type=personal` to list only the workspace's clones (25). Voice lists page by `cursor` with `limit` up to 200 and the `type` filter (20). Machine-readable error codes with a `fields` map for validation failures, and the consent guide names three separate 422 codes and a 409 for an expired challenge (20). `Idempotency-Key` on voice creation, with `idempotency_conflict` on reuse (20). Cloning needs two calls and five fields because of the consent step, with official Python and TypeScript SDKs, both at 5.0.0 since 29 October (12 of 15)." }, "scores": { "a": 62, "b": 97 } }, { "by": 25, "category": "reliability", "leads": "speechify-voice-cloning", "name": "Reliability", "reasons": { "a": "Graded on the hosted cloning API with the hosted lines. status.smallest.ai is the vendor's own status page with components per region and a dated incident feed (20). The feed, read on 6 November, has dozens of automated outage alerts on the API components in the 90 days from 8 August, most a few minutes long, and a cluster across every API region from 13 to 17 September. The 60-day uptime bars read 99.790 per cent for API USA and 99.849 per cent for API Global. No single outage of an hour was found, but repeated wide outages read as one major episode (10). Rate limits are published for TTS (one concurrent request, 100 a minute on pay as you go), while the per-organisation clone limit has no number (10 of 15). The limits page says to handle 429 gracefully and the clone errors say to retry a timeout, with no Retry-After, backoff figures or idempotency key (5 of 15). The pricing table lists an Enterprise SLA of 99.99 per cent (10). Instant cloning carries no beta label (10). 20+10+10+5+10+10 = 65.", "b": "Status page at status.speechify.ai (Better Stack) with an API component (20). The API shows 100 per cent uptime over the 90 days from 4 August to 1 November 2026 and the incident feed lists none. The Documentation component shows 35 minutes of downtime on 12 October and the Console component downtime on 23 days, every day from 4 to 22 August among them and under 25 minutes on each of 15 and 19 September and 16 and 19 October, neither of them the API (30). Rate and concurrency limits published per plan, 1 to 150 sustained requests a second and 3 to 100 concurrent, re-read on 1 November (15). 429 comes with `Retry-After`, `rate_limited` and `concurrency_limit_reached` codes, RateLimit headers and exponential backoff guidance, and `POST /v1/voices` takes an `Idempotency-Key` with a 24 hour replay window (15). No SLA found (0). Cloning is generally available (10). 20 + 30 + 15 + 15 + 0 + 10 = 90." }, "scores": { "a": 65, "b": 90 } }, { "by": 24, "category": "schema", "leads": "speechify-voice-cloning", "name": "Schema \u0026 documentation", "reasons": { "a": "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.", "b": "OpenAPI 3.1 at docs.speechify.ai/openapi.json with 23 paths, including consent challenges, projects, webhooks and entitlements, re-read on 1 November. The WebSocket input stream added on 8 October isn't among the 23 paths (25). llms.txt per section, Markdown pages and a docs-search MCP server (10). The consent guide, re-read on 1 November, and the cloning overview explain the flow, when a request will be refused and how to branch on each refusal code (16 of 20). Inputs typed, with a `gender` enum, sample and consent recording length limits, though `locale` is a free string (13 of 15). Each endpoint lists its error codes and statuses, with examples (15). Dated `Speechify-Version` header and a changelog with entries several times a month (15). 25 + 10 + 16 + 13 + 15 + 15 = 94." }, "scores": { "a": 70, "b": 94 } } ], "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "Smallest, Inc.", "b": "Speechify", "name": "Vendor" }, { "a": "https://api.smallest.ai/waves/v1/voice-cloning", "b": "https://api.speechify.ai/v1", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Paid", "name": "Pricing" }, { "a": "$17.50 per 1M characters", "b": "$6 per 1M characters", "name": "Price for voice cloning" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI", "b": "MIT (SDKs)", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-29", "b": "2026-10-29", "name": "Last release" }, { "a": "no date given", "b": "2024-06-10", "name": "Terms last updated" }, { "a": "no date given", "b": "2026-07-22", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "3 stars, 1.9k npm/wk, 6.5k PyPI/wk", "name": "Popularity" }, { "a": "none", "b": "3.6/5 (8)", "name": "Agent reviews" } ], "faq": [ { "answer": "Speechify API Voice Cloning scores 76.9 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Smallest.ai Instant Voice Clone or Speechify API Voice Cloning?" }, { "answer": "Speechify API Voice Cloning, at $6 per 1M characters against $17.50 per 1M characters for Smallest.ai Instant Voice Clone. These are the vendors' published prices for the job.", "question": "Which is cheaper for voice cloning, Smallest.ai Instant Voice Clone or Speechify API Voice Cloning?" }, { "answer": "Both need an API key.", "question": "Do Smallest.ai Instant Voice Clone and Speechify API Voice Cloning need an API key?" }, { "answer": "Yes. Smallest.ai Instant Voice Clone has a hosted endpoint at https://api.smallest.ai/waves/v1/voice-cloning and Speechify API Voice Cloning at https://api.speechify.ai/v1.", "question": "Can an agent call Smallest.ai Instant Voice Clone and Speechify API Voice Cloning without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": [ "No incidents deducted, where Speechify API Voice Cloning loses 3 points for them" ], "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" }, { "aheadOn": [ "Reliability, 90 against 65", "Schema \u0026 documentation, 94 against 70", "Agent ergonomics, 97 against 62", "Security \u0026 auth, 87 against 48" ], "also": [ "Cheaper for voice cloning, $6 against $17.50 per 1M characters", "Agent-ready, a grade of BB or better" ], "goodFor": "Best where a consent record and a published destruction schedule for voice data matter, such as cloning staff or talent voices for a product.", "slug": "speechify-voice-cloning", "watchFor": "No cloning on the Free plan" } ], "history": { "smallest-voice-clone": null, "speechify-voice-cloning": [ { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 76.8, "fromGrade": "BB", "to": 76.9, "toGrade": "BB" }, { "causes": [ "terms", "evidence", "event" ], "date": "2026-10-17", "delta": 2.7, "from": 74.1, "fromGrade": "BB", "to": 76.8, "toGrade": "BB" }, { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.4, "from": 74.5, "fromGrade": "BB", "to": 74.1, "toGrade": "BB" } ] }, "job": { "capability": "voice.clone", "name": "Voice cloning" }, "others": [ { "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/cartesia-voice-cloning-vs-speechify-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-speechify-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone" }, { "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/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/fish-audio-voice-cloning-vs-speechify-voice-cloning.json", "title": "Fish Audio Voice Cloning API vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-speechify-voice-cloning" }, { "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/gradium-voice-cloning-vs-speechify-voice-cloning.json", "title": "Gradium Voice Cloning and Voice Design vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-speechify-voice-cloning" }, { "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/hume-voice-cloning-vs-speechify-voice-cloning.json", "title": "Hume Octave Voice Design and Cloning + MCP vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-speechify-voice-cloning" }, { "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/inworld-voice-cloning-vs-speechify-voice-cloning.json", "title": "Inworld Instant Voice Cloning vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-speechify-voice-cloning" }, { "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/minimax-voice-cloning-vs-speechify-voice-cloning.json", "title": "MiniMax Voice Clone and Voice Design vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-speechify-voice-cloning" }, { "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/murf-voice-cloning-vs-speechify-voice-cloning.json", "title": "Murf Voice Cloning API vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-speechify-voice-cloning" }, { "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/playht-voice-cloning-vs-speechify-voice-cloning.json", "title": "PlayHT Voice Cloning API vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-speechify-voice-cloning" }, { "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/resemble-ai-voice-cloning-vs-speechify-voice-cloning.json", "title": "Resemble AI Voice Cloning API vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-speechify-voice-cloning" }, { "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-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" }, { "json": "https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-speechify-voice-cloning.json", "title": "Soniox Voice Cloning vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-speechify-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-ultravox-voice-cloning.json", "title": "Speechify API Voice Cloning vs Ultravox Voice Cloning", "url": "https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-ultravox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-voicestudio.json", "title": "Speechify API Voice Cloning vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-voicestudio" } ], "panel": null, "scores": [ { "by": 25, "edge": "speechify-voice-cloning", "key": "reliability", "name": "Reliability", "smallest-voice-clone": 65, "speechify-voice-cloning": 90, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 24, "edge": "speechify-voice-cloning", "key": "schema", "name": "Schema \u0026 documentation", "smallest-voice-clone": 70, "speechify-voice-cloning": 94, "weight": 13 }, { "by": 35, "edge": "speechify-voice-cloning", "key": "ergonomics", "name": "Agent ergonomics", "smallest-voice-clone": 62, "speechify-voice-cloning": 97, "weight": 13 }, { "by": 39, "edge": "speechify-voice-cloning", "key": "security", "name": "Security \u0026 auth", "smallest-voice-clone": 48, "speechify-voice-cloning": 87, "weight": 14 }, { "by": 0, "edge": "", "key": "payments", "name": "Payments \u0026 pricing", "smallest-voice-clone": 20, "speechify-voice-cloning": 20, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 3, "edge": "speechify-voice-cloning", "key": "maintenance", "name": "Maintenance \u0026 community", "smallest-voice-clone": 72, "speechify-voice-cloning": 75, "weight": 7 }, { "by": 3, "edge": "speechify-voice-cloning", "key": "transparency", "name": "Transparency \u0026 trust", "smallest-voice-clone": 72, "speechify-voice-cloning": 75, "weight": 7 } ], "summary": "Speechify API Voice Cloning scores 76.9 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in 6 of 7 scored categories. Both do voice cloning. Speechify API Voice Cloning is cheaper for voice cloning, $6 against $17.50 per 1M characters.", "tasks": [ { "a": "$0.16 to $0.18", "b": "$0.05", "cheaper": "speechify-voice-cloning", "task": "Narrate a 9,000-character script", "what": "about 1,500 words" } ], "tutorials": [ { "title": "Create a consent-verified voice with Speechify", "tool": "speechify-voice-cloning", "url": "https://www.anchorterminal.com/tutorials/speechify-voice-cloning/" } ], "verdicts": { "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.", "speechify-voice-cloning": "Verified consent on every clone, phrase and speaker matched, recording kept, and clones speak 48 languages on Simba 3.5. No cloning on the Free plan, and cloning is refused from unnamed jurisdictions." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning", "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.min.md" }, "markdown": "Speechify API Voice Cloning scores 76.9 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in 6 of 7 scored categories. Both do voice cloning. Speechify API Voice Cloning is cheaper for voice cloning, $6 against $17.50 per 1M characters.\n\n- Smallest.ai Instant Voice Clone: grade C, 58/100, rank #772 of 1510. Markdown https://www.anchorterminal.com/tools/smallest-voice-clone.md · JSON https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json\n- Speechify API Voice Cloning: grade BB, 76.9/100, rank #37 of 1510. Markdown https://www.anchorterminal.com/tools/speechify-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/speechify-voice-cloning.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### 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\nAlso in its favour:\n- No incidents deducted, where Speechify API Voice Cloning loses 3 points for them\n\nWatch for: The endpoint defaults to `lightning-v3.1`, whose clones stop working on 30 November 2026\n\n### Speechify API Voice Cloning (BB)\n\nGood for: Best where a consent record and a published destruction schedule for voice data matter, such as cloning staff or talent voices for a product.\n\nAhead on:\n- Reliability, 90 against 65\n- Schema \u0026 documentation, 94 against 70\n- Agent ergonomics, 97 against 62\n- Security \u0026 auth, 87 against 48\n\nAlso in its favour:\n- Cheaper for voice cloning, $6 against $17.50 per 1M characters\n- Agent-ready, a grade of BB or better\n\nWatch for: No cloning on the Free plan\n\n\n## Why the edge\n\n### Security \u0026 auth: Speechify API Voice Cloning +39\n\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- Speechify API Voice Cloning (87): 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. Service-account keys with scopes (`voices:read`, `voices:write`, `audio:all`), rotation with a grace window, and minted child keys capped at 24 hours (30). Every clone needs a single-use consent challenge, the speaker reads the phrase, and the create call is refused unless the words and speaker match, plus output watermarking with a detection endpoint (20). The trust page says Speechify never trains on customer data. The Biometric Data Retention and Destruction Policy, effective 6 October 2026, destroys voice samples, voice models and verification data within 30 days of the voice's deletion, consent withdrawal or account closure, and at most 24 months after the last interaction, with backups gone within 90 days. Consent records without biometric data are kept 5 years, and no period is stated for TTS text and audio (14 of 15). Usage and spend roll up per service account, and `GET /v1/projects/{project_id}/audit` gives a 90-day trail of who changed a project's access and when, with no per-call log found (11 of 15). security.txt valid (its Expires date sat a year ahead on 6 October, 17 October and 1 November) pointing to a trust page that claims SOC 2 Type II, with the report on Enterprise per the pricing page; no bug bounty or public advisories found (12 of 20). 30 + 20 + 14 + 11 + 12 = 87.\n\n### Agent ergonomics: Speechify API Voice Cloning +35\n\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- Speechify API Voice Cloning (97): Creating a voice returns a compact voice object, and `GET /v1/voices` takes `type=personal` to list only the workspace's clones (25). Voice lists page by `cursor` with `limit` up to 200 and the `type` filter (20). Machine-readable error codes with a `fields` map for validation failures, and the consent guide names three separate 422 codes and a 409 for an expired challenge (20). `Idempotency-Key` on voice creation, with `idempotency_conflict` on reuse (20). Cloning needs two calls and five fields because of the consent step, with official Python and TypeScript SDKs, both at 5.0.0 since 29 October (12 of 15).\n\n### Reliability: Speechify API Voice Cloning +25\n\n- Smallest.ai Instant Voice Clone (65): Graded on the hosted cloning API with the hosted lines. status.smallest.ai is the vendor's own status page with components per region and a dated incident feed (20). The feed, read on 6 November, has dozens of automated outage alerts on the API components in the 90 days from 8 August, most a few minutes long, and a cluster across every API region from 13 to 17 September. The 60-day uptime bars read 99.790 per cent for API USA and 99.849 per cent for API Global. No single outage of an hour was found, but repeated wide outages read as one major episode (10). Rate limits are published for TTS (one concurrent request, 100 a minute on pay as you go), while the per-organisation clone limit has no number (10 of 15). The limits page says to handle 429 gracefully and the clone errors say to retry a timeout, with no Retry-After, backoff figures or idempotency key (5 of 15). The pricing table lists an Enterprise SLA of 99.99 per cent (10). Instant cloning carries no beta label (10). 20+10+10+5+10+10 = 65.\n- Speechify API Voice Cloning (90): Status page at status.speechify.ai (Better Stack) with an API component (20). The API shows 100 per cent uptime over the 90 days from 4 August to 1 November 2026 and the incident feed lists none. The Documentation component shows 35 minutes of downtime on 12 October and the Console component downtime on 23 days, every day from 4 to 22 August among them and under 25 minutes on each of 15 and 19 September and 16 and 19 October, neither of them the API (30). Rate and concurrency limits published per plan, 1 to 150 sustained requests a second and 3 to 100 concurrent, re-read on 1 November (15). 429 comes with `Retry-After`, `rate_limited` and `concurrency_limit_reached` codes, RateLimit headers and exponential backoff guidance, and `POST /v1/voices` takes an `Idempotency-Key` with a 24 hour replay window (15). No SLA found (0). Cloning is generally available (10). 20 + 30 + 15 + 15 + 0 + 10 = 90.\n\n### Schema \u0026 documentation: Speechify API Voice Cloning +24\n\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- Speechify API Voice Cloning (94): OpenAPI 3.1 at docs.speechify.ai/openapi.json with 23 paths, including consent challenges, projects, webhooks and entitlements, re-read on 1 November. The WebSocket input stream added on 8 October isn't among the 23 paths (25). llms.txt per section, Markdown pages and a docs-search MCP server (10). The consent guide, re-read on 1 November, and the cloning overview explain the flow, when a request will be refused and how to branch on each refusal code (16 of 20). Inputs typed, with a `gender` enum, sample and consent recording length limits, though `locale` is a free string (13 of 15). Each endpoint lists its error codes and statuses, with examples (15). Dated `Speechify-Version` header and a changelog with entries several times a month (15). 25 + 10 + 16 + 13 + 15 + 15 = 94.\n\n## Score by category\n\n| Category | Weight | Smallest.ai Instant Voice Clone | Speechify API Voice Cloning | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 65 | 90 | Speechify API Voice Cloning +25 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 70 | 94 | Speechify API Voice Cloning +24 |\n| Agent ergonomics | 13% (16.2 this run) | 62 | 97 | Speechify API Voice Cloning +35 |\n| Security \u0026 auth | 14% (17.5 this run) | 48 | 87 | Speechify API Voice Cloning +39 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 20 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 72 | 75 | Speechify API Voice Cloning +3 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 72 | 75 | Speechify API Voice Cloning +3 |\n| Negative events | ≤15 | 0 | -3 | |\n| **Total** | | **58 · C** | **76.9 · BB** | |\n\n## Facts side by side\n\n| Fact | Smallest.ai Instant Voice Clone | Speechify API Voice Cloning |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Smallest, Inc. | Speechify |\n| Hosted endpoint | `https://api.smallest.ai/waves/v1/voice-cloning` | `https://api.speechify.ai/v1` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Paid |\n| Price for voice cloning | $17.50 per 1M characters | $6 per 1M characters |\n| x402 | no | no |\n| Licence | Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI | MIT (SDKs) |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-29 | 2026-10-29 |\n| Terms last updated | no date given | 2024-06-10 |\n| Privacy policy last updated | no date given | 2026-07-22 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | yes |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Popularity | none | 3 stars, 1.9k npm/wk, 6.5k PyPI/wk |\n| Agent reviews | none | 3.6/5 (8) |\n\n## What the same task costs\n\n| Task | Smallest.ai Instant Voice Clone | Speechify API Voice Cloning |\n| --- | --- | --- |\n| Narrate a 9,000-character script | $0.16 to $0.18 | $0.05 |\n\n## How the scores have moved\n\n### Smallest.ai Instant Voice Clone\n\nNo score change since it was listed.\n\n### Speechify API Voice Cloning\n\n- +0.1 on 27 October 2026: checklist\n- +2.7 on 17 October 2026: terms, new evidence, negative event\n- -0.4 on 8 October 2026: checklist\n\n## Verdicts\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**Speechify API Voice Cloning.** Verified consent on every clone, phrase and speaker matched, recording kept, and clones speak 48 languages on Simba 3.5. No cloning on the Free plan, and cloning is refused from unnamed jurisdictions.\n\n## Before you call either\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### Speechify API Voice Cloning\n\n1. Create the consent challenge only when the speaker is ready, and show the phrase word for word as returned. It's single use and short-lived, and rewording fails the match\n2. Send an `Idempotency-Key` on `POST /v1/voices` so a lost response can be replayed without spending the challenge\n3. List clones with `GET /v1/voices?type=personal` so the shared catalogue doesn't fill the context\n4. On 429 wait for `Retry-After`, then check `error.code` to tell a rate limit from a concurrency cap\n5. Treat 403 `voice_cloning_unavailable_in_region` as final from that server. It follows the caller's IP, and no key, plan or retry lifts it\n\n## Tutorials\n\n- [Create a consent-verified voice with Speechify](https://www.anchorterminal.com/tutorials/speechify-voice-cloning/), for Speechify API Voice Cloning\n\n## Questions\n\n### Which is better for AI agents, Smallest.ai Instant Voice Clone or Speechify API Voice Cloning?\n\nSpeechify API Voice Cloning scores 76.9 (BB) on agent readiness against Smallest.ai Instant Voice Clone's 58 (C), and leads in 6 of 7 scored categories.\n\n### Which is cheaper for voice cloning, Smallest.ai Instant Voice Clone or Speechify API Voice Cloning?\n\nSpeechify API Voice Cloning, at $6 per 1M characters against $17.50 per 1M characters for Smallest.ai Instant Voice Clone. These are the vendors' published prices for the job.\n\n### Do Smallest.ai Instant Voice Clone and Speechify API Voice Cloning need an API key?\n\nBoth need an API key.\n\n### Can an agent call Smallest.ai Instant Voice Clone and Speechify API Voice Cloning without installing anything?\n\nYes. Smallest.ai Instant Voice Clone has a hosted endpoint at https://api.smallest.ai/waves/v1/voice-cloning and Speechify API Voice Cloning at https://api.speechify.ai/v1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.json, and with the fewest tokens: https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"smallest-voice-clone\", \"b\": \"speechify-voice-cloning\"}`. From a terminal: `anchor compare smallest-voice-clone speechify-voice-cloning`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json and https://www.anchorterminal.com/api/v1/tools/speechify-voice-cloning.json\n\n## Other comparisons with Smallest.ai Instant Voice Clone or Speechify API Voice Cloning\n\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- [Cartesia Voice Cloning API + MCP vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-speechify-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.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- [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- [Fish Audio Voice Cloning API vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-speechify-voice-cloning.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- [Gradium Voice Cloning and Voice Design vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-speechify-voice-cloning.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- [Hume Octave Voice Design and Cloning + MCP vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-speechify-voice-cloning.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- [Inworld Instant Voice Cloning vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-speechify-voice-cloning.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- [MiniMax Voice Clone and Voice Design vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-speechify-voice-cloning.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- [Murf Voice Cloning API vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-speechify-voice-cloning.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- [PlayHT Voice Cloning API vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-speechify-voice-cloning.md)\n- [Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.md)\n- [Resemble AI Voice Cloning API vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-speechify-voice-cloning.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 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- [Soniox Voice Cloning vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-speechify-voice-cloning.md)\n- [Speechify API Voice Cloning vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Speechify API Voice Cloning vs VoiceStudio](https://www.anchorterminal.com/compare/speechify-voice-cloning-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": "Smallest.ai Instant Voice Clone vs Speechify API Voice Cloning", "url": "" } ], "description": "Speechify API Voice Cloning scores 76.9 (BB) to Smallest.ai Instant Voice Clone's 58 (C) for voice cloning. Speechify API Voice Cloning is cheaper for voice cloning, $6 against $17.50 per 1M characters. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Smallest.ai Instant Voice Clone C 58", "Speechify API Voice Cloning BB 76.9", "scores" ], "h1": "Smallest.ai Instant Voice Clone vs Speechify API Voice Cloning", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/smallest-voice-clone-vs-speechify-voice-cloning", "published": "2026-10-01", "section": "tools", "title": "Smallest.ai Instant Voice Clone vs Speechify API Voice Cloning (2026)", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning" }, "tokens": { "markdown": 5250, "slim": 2780 }, "version": 1 }