{ "data": { "a": { "slug": "resemble-ai-voice-cloning", "name": "Resemble AI Voice Cloning API", "vendor": "Resemble AI", "vendorUrl": "https://www.resemble.ai", "kind": "model", "category": "voice-cloning", "summary": "Resemble AI's service for creating custom voices for speech generation.", "url": "https://www.anchorterminal.com/tools/resemble-ai-voice-cloning", "markdownUrl": "https://www.anchorterminal.com/tools/resemble-ai-voice-cloning.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/resemble-ai-voice-cloning.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/resemble-ai-voice-cloning.json", "dns": "resemble-ai-voice-cloning.grade.anchorterminal.com", "repo": "https://github.com/resemble-ai/resemble-node", "transports": [ "http" ], "remoteUrl": "https://app.resemble.ai/api/v2", "packages": [ { "registry": "npm", "name": "@resemble/node" }, { "registry": "pypi", "name": "resemble" } ], "auth": "api-key", "authNotes": "`Authorization: Bearer` API key. Voice creation, recordings and builds run on `app.resemble.ai/api/v2`, speech from the clone on `f.cluster.resemble.ai`.", "pricing": "paid", "pricingNotes": "The Voice Cloning API needs a Business or Enterprise plan per the 2 October 2026 check. The changelog says the first clone is free and later ones $2, with card capture after the first. Per-second and per-slot prices weren't re-read on 4 November 2026, and the earlier figures came from a billing data endpoint this run doesn't read.", "priceSummary": "Paid", "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": 15, "npmWeekly": 8053, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://docs.resemble.ai/voice-creation/voices/clone-overview", "llmsTxt": "https://docs.resemble.ai/llms.txt", "openapi": "https://docs.resemble.ai/openapi.json", "capabilities": [ "voice.clone", "speech.tts" ], "tags": [ "hosted", "closed-source", "python", "typescript", "openapi", "llms-txt", "webhooks", "async-jobs", "watermark", "enterprise" ], "lastRelease": "2026-06-30", "graded": true, "anchor": { "graded": true, "score": 52.5, "grade": "D", "agentReady": false, "rank": 979, "ranked": true, "rankOf": 1486, "categoryRank": 12, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 66, "maintenance": 30, "payments": 0, "reliability": 65, "schema": 81, "security": 54, "transparency": 75 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-04" }, "negative": -3, "negativeNotes": [ "2026-06-29: the changelog says Resemble 'began deprecating all older voice models' that day, with no model list or notice period, and the model versions page says voices on the seven end-of-life models can no longer generate audio until upgraded to Resemble Ultra. On 2026-06-30 API-created voices switched to rapid clones by default, announced the same day. Previously working requests fail with notice only after the change, so this run's same-day -3, the two folded into one term. Per the 2 October check, not re-read on 4 November. https://www.resemble.ai/changelog and https://docs.resemble.ai/getting-started/model-versions" ], "verdict": "Rapid clones from 10 seconds of audio, ready in under a minute, with a public OpenAPI file and a stated no-training policy for customer voice data. Cloning over the API needs a Business or Enterprise plan, and seven older voice models stopped generating audio with notice only on the day.", "bestFor": "Teams already paying for Resemble's detection and watermarking who want clones in the same account.", "strengths": [ "Rapid clones from 10 seconds of audio, ready in under a minute", "Training webhook through `callback_uri`, and STOI, PESQ and SI-SDR scores for problem recordings", "Privacy policy says customer voice data isn't used to train general-purpose models, and synthesis text and audio aren't kept after delivery", "Named subprocessor list and US hosting regions published, ISO 27001:2022 listed as attested", "Public OpenAPI file, llms.txt and a published limit of 40 requests a second" ], "weaknesses": [ "Cloning API only on Business and Enterprise plans, and no per-unit API price we could read today", "No consent or speaker verification step in the API reference", "Seven older TTS models are end of life and their voices can't generate audio until upgraded. The 29 June 2026 changelog entry gave no notice period", "Error responses carry no codes, create-voice documents only a 200, and nothing is documented for 429", "No security.txt, disclosure policy or bug bounty, and SOC 2 Type 2 was still in observation two days after its expected report date" ], "agentNotes": [ "Create the voice, upload recordings or pass `dataset_url`, then call `/build`. Nothing trains until you do", "Set `callback_uri` rather than polling for `status` to reach `finished`", "Expect a rapid clone. Since 2026-06-30 API-created voices default to rapid, and create-voice has no field to pick another type", "Upgrade any voice on a pre-Ultra model before synthesis, since those voices can no longer generate audio", "Check `success` in every response body, log the request ID, and stay under 40 requests a second per token with your own backoff" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 52.5 } ], "editorialScores": { "ergonomics": 66, "maintenance": 30, "payments": 0, "reliability": 65, "schema": 81, "security": 54, "transparency": 70 }, "provenanceScore": 80, "checked": { "categories": { "ergonomics": "2026-11-04", "maintenance": "2026-11-04", "payments": "2026-11-04", "reliability": "2026-11-04", "schema": "2026-11-04", "security": "2026-11-04", "transparency": "2026-11-04" }, "last": "2026-11-04", "lastMoved": "2026-11-04", "oldest": "2026-11-04", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl -X POST https://app.resemble.ai/api/v2/voices -H \"Authorization: Bearer $RESEMBLE_API_KEY\" \\\n -H \"content-type: application/json\" \\\n -d '{\"name\":\"Support voice\",\"dataset_url\":\"https://example.com/sample.wav\",\"callback_uri\":\"https://example.com/hooks/resemble\"}'" }, "letme": { "capability": "https://letme.dev/voice.clone", "tool": "https://letme.dev/resemble-ai-voice-cloning" }, "sameCompany": [ "resemble-ai-tts" ], "area": "voice", "provenance": { "legalEntity": "Resemble AI, Inc.", "domain": "resemble.ai", "domainRegistered": "2018-11-12", "endpointOnVendorDomain": true, "terms": "https://www.resemble.ai/terms-of-service", "privacy": "https://www.resemble.ai/privacy-policy", "statusPage": "https://status.resemble.ai", "changelog": "https://www.resemble.ai/changelog", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "The privacy policy gives the address as 812 W Dana St, Mountain View, California" ], "score": 80 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/resemble-ai-voice-cloning.json", "live": { "slug": "resemble-ai-voice-cloning", "probe": { "target": "https://app.resemble.ai/api/v2", "method": "get", "lastAt": "2026-11-07T18:20:51.024938334Z", "lastOk": true, "lastStatus": 404, "lastMs": 193, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 174, "p95ms24h": 374, "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": 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": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.resemble.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:48:40.575174845Z" }, "versions": [ { "registry": "npm", "name": "@resemble/node", "version": "3.5.3", "seenAt": "2026-11-07T00:01:29.153330736Z" }, { "registry": "pypi", "name": "resemble", "version": "1.9.0", "released": "2026-04-06", "seenAt": "2026-11-07T00:01:29.367926456Z" } ], "githubStars": 15, "npmWeekly": 2708, "pypiWeekly": 266, "securityTxt": { "url": "https://resemble.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:01:21.226972005Z" }, "llmsTxt": { "url": "https://docs.resemble.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:49.024704863Z" }, "domain": { "domain": "resemble.ai", "registered": "2018-11-12", "source": "https://rdap.identitydigital.services/rdap/domain/resemble.ai", "checkedAt": "2026-11-01T14:11:31.603734411Z" }, "github": { "repo": "resemble-ai/resemble-node", "checkedAt": "2026-11-02T09:21:24.993832128Z", "stars": 15, "archived": false, "issuesEnabled": true, "pushedAt": "2026-04-06T21:14:23Z", "openIssues": 3, "openPRs": 0, "issuesOpened90d": 0, "issuesClosed90d": 0, "prsMerged90d": 0, "replies": { "sampled": 4, "unanswered": 3, "medianDays": 50.5 } }, "updatedAt": "2026-11-07T18:20:51.024938334Z" } }, "answer": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Resemble AI Voice Cloning API's 52.5 (D), and leads in 2 of 7 scored categories. Resemble AI Voice Cloning API leads on schema \u0026 documentation and security \u0026 auth.", "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": 42, "category": "maintenance", "leads": "smallest-voice-clone", "name": "Maintenance \u0026 community", "reasons": { "a": "Newest changelog entry 2026-06-30 per the 2 October check, not re-read on 4 November (terms), 127 days old (10 of 30). No dated entries in the last 90 days that we could read (0). Public changelog, no answering support channel confirmed (5 of 15). The Node SDK clone on 4 November still ends at 754a91e (6 April 2026, 3.5.3, zero-retention mode); Python 1.9.0 of 6 April per PyPI on 2 October, not re-read. Neither has a release since the June model changes (12 of 15). The Node repository has Jest tests but no CI workflow and no release tags (3 of 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": 30, "b": 72 } }, { "by": 20, "category": "payments", "leads": "smallest-voice-clone", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402 (0). The per-second speech and per-slot prices were read on 30 September from app.resemble.ai/billing/api/v1/plans, a billing data endpoint this run doesn't read, so that reading is struck, and the pricing pages can't be re-read under the terms, so no per-unit price for the API stands today (0). The changelog's $2 for later clones is the Flex web app's, not the API's. No API cloning below Business per the 2 October check, and the free first clone in the Flex web app captures a card for later clones (0). 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": 0, "b": 20 } }, { "by": 11, "category": "schema", "leads": "resemble-ai-voice-cloning", "name": "Schema \u0026 documentation", "reasons": { "a": "Public OpenAPI 3.1 at docs.resemble.ai/openapi.json (25). llms.txt (10). The clone overview separates rapid and professional clones and says how much audio each needs (12 of 20). Typed create fields, including `dataset_url`, `callback_uri` and `language`, and `page_size` bounded to 10 to 1,000 (12 of 15). Examples, plus dataset quality scores (STOI, PESQ, SI-SDR) for bad recordings. The spec documents only 200 responses on the voice, build and delete operations, and the errors page gives one generic shape, `success: false` with a message (7 of 15). Versioned `/api/v2` paths and a dated public changelog (15). All per the 2 October check, not re-read on 4 November (Resemble's terms bar automated means).", "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": 81, "b": 70 } }, { "by": 6, "category": "security", "leads": "resemble-ai-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. Plain Bearer API keys, no scopes found (20 of 30). The terms say Resemble may require verbal consent from the person cloned. The API reference has no consent field, though the Node SDK still sends an optional `consent` value added in 2023. Watermarking and deepfake detection sit in the same account (4 of 20). The privacy policy of 14 August 2026 says customer voice data isn't used to train general-purpose models or for research, recordings and voice models are kept while the account is active plus a 30-day grace period, and synthesis text and audio aren't kept after delivery (12 of 15). Clone slots and usage readable through the Billing API, no per-call log found (8 of 15). The Secureframe trust centre lists ISO 27001:2022 as certified, an annual third-party penetration test, and SOC 2 Type 2 still in its observation period on 2 October, two days after the date it gave for the report. No security.txt, disclosure policy or bug bounty found (10 of 20). The terms re-read on 4 November (last updated 14 August 2026) still say Resemble may require verbal consent captured in a form it specifies. OSV lists no records for @resemble/node or resemble. The rest per the 2 October check, not re-read on 4 November (Resemble's terms bar automated means).", "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": 54, "b": 48 } } ], "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "Resemble AI", "b": "Smallest, Inc.", "name": "Vendor" }, { "a": "https://app.resemble.ai/api/v2", "b": "https://api.smallest.ai/waves/v1/voice-cloning", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Paid", "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": "none", "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": "2026-06-30", "b": "2026-10-29", "name": "Last release" }, { "a": "2026-08-14", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-08-14", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "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": "15 stars, 8.1k npm/wk", "b": "none", "name": "Popularity" }, { "a": "2.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Resemble AI Voice Cloning API's 52.5 (D), and leads in 2 of 7 scored categories. Resemble AI Voice Cloning API leads on schema \u0026 documentation and security \u0026 auth.", "question": "Which is better for AI agents, Resemble AI Voice Cloning API or Smallest.ai Instant Voice Clone?" }, { "answer": "Both need an API key.", "question": "Do Resemble AI Voice Cloning API and Smallest.ai Instant Voice Clone need an API key?" }, { "answer": "Yes. Resemble AI Voice Cloning API has a hosted endpoint at https://app.resemble.ai/api/v2 and Smallest.ai Instant Voice Clone at https://api.smallest.ai/waves/v1/voice-cloning.", "question": "Can an agent call Resemble AI Voice Cloning API and Smallest.ai Instant Voice Clone without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 81 against 70", "Security \u0026 auth, 54 against 48" ], "also": null, "goodFor": "Teams already paying for Resemble's detection and watermarking who want clones in the same account.", "slug": "resemble-ai-voice-cloning", "watchFor": "Cloning API only on Business and Enterprise plans, and no per-unit API price we could read today" }, { "aheadOn": [ "Payments \u0026 pricing, 20 against 0", "Maintenance \u0026 community, 72 against 30" ], "also": [ "No incidents deducted, where Resemble AI Voice Cloning API 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" } ], "history": { "resemble-ai-voice-cloning": [ { "causes": [ "correction" ], "date": "2026-11-04", "delta": -1.5, "from": 54, "fromGrade": "C", "to": 52.5, "toGrade": "D" }, { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.3, "from": 54.3, "fromGrade": "C", "to": 54, "toGrade": "C" } ], "smallest-voice-clone": null }, "job": { "capability": "voice.clone", "name": "Voice cloning" }, "others": [ { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-resemble-ai-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-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-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/fish-audio-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "Fish Audio Voice Cloning API vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-resemble-ai-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/gradium-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "Gradium Voice Cloning and Voice Design vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-resemble-ai-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/hume-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "Hume Octave Voice Design and Cloning + MCP vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-resemble-ai-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/inworld-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "Inworld Instant Voice Cloning vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-resemble-ai-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/minimax-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "MiniMax Voice Clone and Voice Design vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-resemble-ai-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/murf-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "Murf Voice Cloning API vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-resemble-ai-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/playht-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "PlayHT Voice Cloning API vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-resemble-ai-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/resemble-ai-voice-cloning-vs-soniox-voice-cloning.json", "title": "Resemble AI Voice Cloning API vs Soniox Voice Cloning", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-soniox-voice-cloning" }, { "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/resemble-ai-voice-cloning-vs-ultravox-voice-cloning.json", "title": "Resemble AI Voice Cloning API vs Ultravox Voice Cloning", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-ultravox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-voicestudio.json", "title": "Resemble AI Voice Cloning API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-voicestudio" }, { "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": 0, "edge": "", "key": "reliability", "name": "Reliability", "resemble-ai-voice-cloning": 65, "smallest-voice-clone": 65, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 11, "edge": "resemble-ai-voice-cloning", "key": "schema", "name": "Schema \u0026 documentation", "resemble-ai-voice-cloning": 81, "smallest-voice-clone": 70, "weight": 13 }, { "by": 4, "edge": "resemble-ai-voice-cloning", "key": "ergonomics", "name": "Agent ergonomics", "resemble-ai-voice-cloning": 66, "smallest-voice-clone": 62, "weight": 13 }, { "by": 6, "edge": "resemble-ai-voice-cloning", "key": "security", "name": "Security \u0026 auth", "resemble-ai-voice-cloning": 54, "smallest-voice-clone": 48, "weight": 14 }, { "by": 20, "edge": "smallest-voice-clone", "key": "payments", "name": "Payments \u0026 pricing", "resemble-ai-voice-cloning": 0, "smallest-voice-clone": 20, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 42, "edge": "smallest-voice-clone", "key": "maintenance", "name": "Maintenance \u0026 community", "resemble-ai-voice-cloning": 30, "smallest-voice-clone": 72, "weight": 7 }, { "by": 3, "edge": "resemble-ai-voice-cloning", "key": "transparency", "name": "Transparency \u0026 trust", "resemble-ai-voice-cloning": 75, "smallest-voice-clone": 72, "weight": 7 } ], "summary": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Resemble AI Voice Cloning API's 52.5 (D), and leads in 2 of 7 scored categories. Resemble AI Voice Cloning API leads on schema \u0026 documentation and security \u0026 auth. Both do voice cloning.", "tasks": null, "tutorials": [ { "title": "Build a voice from a dataset with Resemble", "tool": "resemble-ai-voice-cloning", "url": "https://www.anchorterminal.com/tutorials/resemble-ai-voice-cloning/" } ], "verdicts": { "resemble-ai-voice-cloning": "Rapid clones from 10 seconds of audio, ready in under a minute, with a public OpenAPI file and a stated no-training policy for customer voice data. Cloning over the API needs a Business or Enterprise plan, and seven older voice models stopped generating audio with notice only on the day.", "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/resemble-ai-voice-cloning-vs-smallest-voice-clone", "json": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.min.md" }, "markdown": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Resemble AI Voice Cloning API's 52.5 (D), and leads in 2 of 7 scored categories. Resemble AI Voice Cloning API leads on schema \u0026 documentation and security \u0026 auth. Both do voice cloning.\n\n- Resemble AI Voice Cloning API: grade D, 52.5/100, rank #979 of 1486. Markdown https://www.anchorterminal.com/tools/resemble-ai-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/resemble-ai-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### Resemble AI Voice Cloning API (D)\n\nGood for: Teams already paying for Resemble's detection and watermarking who want clones in the same account.\n\nAhead on:\n- Schema \u0026 documentation, 81 against 70\n- Security \u0026 auth, 54 against 48\n\nWatch for: Cloning API only on Business and Enterprise plans, and no per-unit API price we could read today\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\nAhead on:\n- Payments \u0026 pricing, 20 against 0\n- Maintenance \u0026 community, 72 against 30\n\nAlso in its favour:\n- No incidents deducted, where Resemble AI Voice Cloning API 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\n## Why the edge\n\n### Maintenance \u0026 community: Smallest.ai Instant Voice Clone +42\n\n- Resemble AI Voice Cloning API (30): Newest changelog entry 2026-06-30 per the 2 October check, not re-read on 4 November (terms), 127 days old (10 of 30). No dated entries in the last 90 days that we could read (0). Public changelog, no answering support channel confirmed (5 of 15). The Node SDK clone on 4 November still ends at 754a91e (6 April 2026, 3.5.3, zero-retention mode); Python 1.9.0 of 6 April per PyPI on 2 October, not re-read. Neither has a release since the June model changes (12 of 15). The Node repository has Jest tests but no CI workflow and no release tags (3 of 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### Payments \u0026 pricing: Smallest.ai Instant Voice Clone +20\n\n- Resemble AI Voice Cloning API (0): No x402, MPP or L402 (0). The per-second speech and per-slot prices were read on 30 September from app.resemble.ai/billing/api/v1/plans, a billing data endpoint this run doesn't read, so that reading is struck, and the pricing pages can't be re-read under the terms, so no per-unit price for the API stands today (0). The changelog's $2 for later clones is the Flex web app's, not the API's. No API cloning below Business per the 2 October check, and the free first clone in the Flex web app captures a card for later clones (0). 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### Schema \u0026 documentation: Resemble AI Voice Cloning API +11\n\n- Resemble AI Voice Cloning API (81): Public OpenAPI 3.1 at docs.resemble.ai/openapi.json (25). llms.txt (10). The clone overview separates rapid and professional clones and says how much audio each needs (12 of 20). Typed create fields, including `dataset_url`, `callback_uri` and `language`, and `page_size` bounded to 10 to 1,000 (12 of 15). Examples, plus dataset quality scores (STOI, PESQ, SI-SDR) for bad recordings. The spec documents only 200 responses on the voice, build and delete operations, and the errors page gives one generic shape, `success: false` with a message (7 of 15). Versioned `/api/v2` paths and a dated public changelog (15). All per the 2 October check, not re-read on 4 November (Resemble's terms bar automated means).\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### Security \u0026 auth: Resemble AI Voice Cloning API +6\n\n- Resemble AI Voice Cloning API (54): 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. Plain Bearer API keys, no scopes found (20 of 30). The terms say Resemble may require verbal consent from the person cloned. The API reference has no consent field, though the Node SDK still sends an optional `consent` value added in 2023. Watermarking and deepfake detection sit in the same account (4 of 20). The privacy policy of 14 August 2026 says customer voice data isn't used to train general-purpose models or for research, recordings and voice models are kept while the account is active plus a 30-day grace period, and synthesis text and audio aren't kept after delivery (12 of 15). Clone slots and usage readable through the Billing API, no per-call log found (8 of 15). The Secureframe trust centre lists ISO 27001:2022 as certified, an annual third-party penetration test, and SOC 2 Type 2 still in its observation period on 2 October, two days after the date it gave for the report. No security.txt, disclosure policy or bug bounty found (10 of 20). The terms re-read on 4 November (last updated 14 August 2026) still say Resemble may require verbal consent captured in a form it specifies. OSV lists no records for @resemble/node or resemble. The rest per the 2 October check, not re-read on 4 November (Resemble's terms bar automated means).\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## Score by category\n\n| Category | Weight | Resemble AI Voice Cloning API | Smallest.ai Instant Voice Clone | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 65 | 65 | even |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 81 | 70 | Resemble AI Voice Cloning API +11 |\n| Agent ergonomics | 13% (16.2 this run) | 66 | 62 | Resemble AI Voice Cloning API +4 |\n| Security \u0026 auth | 14% (17.5 this run) | 54 | 48 | Resemble AI Voice Cloning API +6 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 0 | 20 | Smallest.ai Instant Voice Clone +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 30 | 72 | Smallest.ai Instant Voice Clone +42 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 75 | 72 | Resemble AI Voice Cloning API +3 |\n| Negative events | ≤15 | -3 | 0 | |\n| **Total** | | **52.5 · D** | **58 · C** | |\n\n## Facts side by side\n\n| Fact | Resemble AI Voice Cloning API | Smallest.ai Instant Voice Clone |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Resemble AI | Smallest, Inc. |\n| Hosted endpoint | `https://app.resemble.ai/api/v2` | `https://api.smallest.ai/waves/v1/voice-cloning` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Paid | Pay per use |\n| Price for voice cloning | not published | $17.50 per 1M characters |\n| x402 | no | no |\n| Licence | none | 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 | 2026-06-30 | 2026-10-29 |\n| Terms last updated | 2026-08-14 | no date given |\n| Privacy policy last updated | 2026-08-14 | no date given |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | 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 | 15 stars, 8.1k npm/wk | none |\n| Agent reviews | 2.5/5 (2) | none |\n\n## How the scores have moved\n\n### Resemble AI Voice Cloning API\n\n- -1.5 on 4 November 2026 (C to D): correction\n- -0.3 on 8 October 2026: checklist\n\n### Smallest.ai Instant Voice Clone\n\nNo score change since it was listed.\n\n## Verdicts\n\n**Resemble AI Voice Cloning API.** Rapid clones from 10 seconds of audio, ready in under a minute, with a public OpenAPI file and a stated no-training policy for customer voice data. Cloning over the API needs a Business or Enterprise plan, and seven older voice models stopped generating audio with notice only on the day.\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### Resemble AI Voice Cloning API\n\n1. Create the voice, upload recordings or pass `dataset_url`, then call `/build`. Nothing trains until you do\n2. Set `callback_uri` rather than polling for `status` to reach `finished`\n3. Expect a rapid clone. Since 2026-06-30 API-created voices default to rapid, and create-voice has no field to pick another type\n4. Upgrade any voice on a pre-Ultra model before synthesis, since those voices can no longer generate audio\n5. Check `success` in every response body, log the request ID, and stay under 40 requests a second per token with your own backoff\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- [Build a voice from a dataset with Resemble](https://www.anchorterminal.com/tutorials/resemble-ai-voice-cloning/), for Resemble AI Voice Cloning API\n\n## Questions\n\n### Which is better for AI agents, Resemble AI Voice Cloning API or Smallest.ai Instant Voice Clone?\n\nSmallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Resemble AI Voice Cloning API's 52.5 (D), and leads in 2 of 7 scored categories. Resemble AI Voice Cloning API leads on schema \u0026 documentation and security \u0026 auth.\n\n### Do Resemble AI Voice Cloning API and Smallest.ai Instant Voice Clone need an API key?\n\nBoth need an API key.\n\n### Can an agent call Resemble AI Voice Cloning API and Smallest.ai Instant Voice Clone without installing anything?\n\nYes. Resemble AI Voice Cloning API has a hosted endpoint at https://app.resemble.ai/api/v2 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/resemble-ai-voice-cloning-vs-smallest-voice-clone.json, and with the fewest tokens: https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"resemble-ai-voice-cloning\", \"b\": \"smallest-voice-clone\"}`. From a terminal: `anchor compare resemble-ai-voice-cloning smallest-voice-clone`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/resemble-ai-voice-cloning.json and https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json\n\n## Other comparisons with Resemble AI Voice Cloning API or Smallest.ai Instant Voice Clone\n\n- [Cartesia Voice Cloning API + MCP vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-resemble-ai-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 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 Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.md)\n- [Fish Audio Voice Cloning API vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-resemble-ai-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- [Gradium Voice Cloning and Voice Design vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-resemble-ai-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- [Hume Octave Voice Design and Cloning + MCP vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-resemble-ai-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- [Inworld Instant Voice Cloning vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-resemble-ai-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- [MiniMax Voice Clone and Voice Design vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-resemble-ai-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- [Murf Voice Cloning API vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-resemble-ai-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- [PlayHT Voice Cloning API vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-resemble-ai-voice-cloning.md)\n- [PlayHT Voice Cloning API vs 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 Soniox Voice Cloning](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-soniox-voice-cloning.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- [Resemble AI Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Resemble AI Voice Cloning API vs VoiceStudio](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-voicestudio.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": "Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "" } ], "description": "Smallest.ai Instant Voice Clone scores 58 (C) to Resemble AI Voice Cloning's 52.5 (D) for voice cloning. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Resemble AI Voice Cloning API D 52.5", "Smallest.ai Instant Voice Clone C 58", "scores" ], "h1": "Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone", "published": "2026-10-01", "section": "tools", "title": "Resemble AI Voice Cloning vs Smallest.ai Instant Voice Clone (2026)", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone" }, "tokens": { "markdown": 4950, "slim": 2480 }, "version": 1 }