{ "data": { "a": { "slug": "hume-voice-cloning", "name": "Hume Octave Voice Design and Cloning + MCP", "vendor": "Hume AI", "vendorUrl": "https://www.hume.ai", "kind": "model", "category": "voice-cloning", "summary": "Custom voices for Hume's Octave TTS and EVI.", "url": "https://www.anchorterminal.com/tools/hume-voice-cloning", "markdownUrl": "https://www.anchorterminal.com/tools/hume-voice-cloning.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/hume-voice-cloning.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/hume-voice-cloning.json", "dns": "hume-voice-cloning.grade.anchorterminal.com", "repo": "https://github.com/HumeAI/hume-python-sdk", "license": "MIT (SDKs)", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.hume.ai/v0/tts", "packages": [ { "registry": "npm", "name": "hume" }, { "registry": "pypi", "name": "hume" }, { "registry": "npm", "name": "@humeai/mcp-server" } ], "auth": "api-key", "authNotes": "`X-Hume-Api-Key` header. The MCP server reads `HUME_API_KEY`.", "pricing": "freemium", "pricingNotes": "Voice design is billed as TTS characters. Free $0 includes 10,000 characters, Starter $3 30,000, Creator $14 ($7 first month) 140,000 then $0.15 per 1,000, Pro $70 1M then $0.12, Scale $200 3.3M then $0.10, Business $500 10M then $0.05. Cloning in the UI is unlimited on every plan. Cloning over the API needs Enterprise. Free and Starter are for non-commercial use only (https://www.hume.ai/pricing).", "priceSummary": "$14 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 or machine payment in the docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 5, "popularity": { "githubStars": 180, "npmWeekly": 79177, "pypiWeekly": 23750, "asOf": "2026-09-30" }, "docsUrl": "https://dev.hume.ai/docs/voice/overview", "llmsTxt": "https://dev.hume.ai/llms.txt", "openapi": "https://dev.hume.ai/openapi.json", "capabilities": [ "voice.clone", "voice.design", "speech.tts" ], "tags": [ "hosted", "freemium", "free-tier", "closed-source", "python", "typescript", "llms-txt", "mcp", "enterprise", "status-page" ], "lastRelease": "2026-08-18", "graded": true, "anchor": { "graded": true, "score": 54.6, "grade": "C", "agentReady": false, "rank": 899, "ranked": true, "rankOf": 1486, "categoryRank": 11, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 75, "maintenance": 45, "payments": 30, "reliability": 58, "schema": 87, "security": 23, "transparency": 57 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-04" }, "negative": 0, "verdict": "Voice design from a natural-language description, saved with one call. Cloning over the API is Enterprise-only. Hume ends API access on 13 November 2026.", "bestFor": "Designing a voice from a description, and for teams already on EVI.", "strengths": [ "Voice design from a natural-language description, saved with one call", "Official MCP server with 5 tools to design, save, list and delete voices", "Public OpenAPI and AsyncAPI files and named error codes", "API data isn't used for training, per the privacy statement", "Custom voices work in both Octave TTS and EVI" ], "weaknesses": [ "Hume ends access to the TTS and EVI APIs on 13 November 2026 and deletes account data after that date", "Cloning over the API is Enterprise-only", "Consent is a legal checkbox in the Platform, not a check", "One account-wide API key, shown in a WebSocket query string in the docs", "No changelog entry since 15 May 2026, and the last SDK release touching TTS code is Python 0.14.1 (17 August 2026)", "No security.txt, SOC 2 report or subprocessor list found" ], "agentNotes": [ "Design with `POST /v0/tts` using an utterance `description` plus sample `text`, then save a `generation_id` with `POST /v0/tts/voices`", "Request several generations and pick one. A saved voice can't be tuned afterwards", "List your own voices with `GET /v0/tts/voices?provider=CUSTOM_VOICE`", "Use `/v0/tts/file` or streaming rather than the JSON endpoint to keep base64 audio out of context", "On E0811 back off and retry, the request was rate limited" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 54.6 } ], "editorialScores": { "ergonomics": 75, "maintenance": 45, "payments": 30, "reliability": 58, "schema": 87, "security": 23, "transparency": 40 }, "provenanceScore": 74, "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": "2026-10-08", "oldest": "2026-11-04", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl https://api.hume.ai/v0/tts -H \"X-Hume-Api-Key: $HUME_API_KEY\" \\\n --json '{\"utterances\":[{\"description\":\"Calm, warm support agent with a slight Irish accent\",\"text\":\"Thanks for calling, how can I help today?\"}],\"num_generations\":2}'", "claudeCode": "claude mcp add hume -e HUME_API_KEY=$HUME_API_KEY -- npx @humeai/mcp-server", "config": { "mcpServers": { "hume": { "args": [ "@humeai/mcp-server" ], "command": "npx", "env": { "HUME_API_KEY": "${HUME_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/voice.clone", "tool": "https://letme.dev/hume-voice-cloning" }, "sameCompany": [ "hume-evi" ], "area": "voice", "unitPrices": [ { "item": "Creator plan", "unit": "month", "usd": 14, "note": "commercial use, 140,000 characters, $7 first month" }, { "item": "Pro plan", "unit": "month", "usd": 70, "note": "1M characters" }, { "item": "Voice design and speech on Creator", "unit": "1m-chars", "usd": 150, "note": "$0.15 per 1,000 characters over the allowance" }, { "item": "Voice design and speech on Business", "unit": "1m-chars", "usd": 50, "note": "$0.05 per 1,000 characters over the allowance" } ], "provenance": { "legalEntity": "Hume AI, Inc.", "domain": "hume.ai", "domainRegistered": "2020-04-06", "endpointOnVendorDomain": true, "terms": "https://www.hume.ai/terms-of-use", "privacy": "https://www.hume.ai/privacy-policy", "statusPage": "https://status.hume.ai", "changelog": "https://dev.hume.ai/changelog", "securityTxt": "none", "checked": "2026-09-30", "score": 74 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/hume-voice-cloning.json", "live": { "slug": "hume-voice-cloning", "probe": { "target": "https://api.hume.ai/v0/tts", "method": "get", "lastAt": "2026-11-07T18:20:31.188122159Z", "lastOk": true, "lastStatus": 404, "lastMs": 247, "authRequired": false, "uptime24h": 100, "uptime30d": 99.97, "p50ms24h": 180, "p95ms24h": 286, "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": 252 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 251, "ok": 250 }, { "date": "2026-10-29", "probes": 248, "ok": 248 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.hume.ai", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:21:16.323054271Z" }, "versions": [ { "registry": "github", "name": "HumeAI/hume-python-sdk", "version": "v0.14.0", "released": "2026-06-17", "seenAt": "2026-11-06T23:33:39.106316489Z" }, { "registry": "npm", "name": "@humeai/mcp-server", "version": "0.3.0", "seenAt": "2026-11-06T23:33:36.910988013Z" }, { "registry": "npm", "name": "hume", "version": "0.16.1", "seenAt": "2026-11-06T23:33:36.600677328Z" }, { "registry": "pypi", "name": "hume", "version": "0.14.1", "released": "2026-08-17", "seenAt": "2026-11-06T23:33:36.719534459Z" } ], "githubStars": 182, "npmWeekly": 112038, "pypiWeekly": 35235, "securityTxt": { "url": "https://hume.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:00:06.21640031Z" }, "llmsTxt": { "url": "https://dev.hume.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:45.160448645Z" }, "domain": { "domain": "hume.ai", "registered": "2020-04-06", "source": "https://rdap.identitydigital.services/rdap/domain/hume.ai", "checkedAt": "2026-11-01T14:15:47.929579773Z" }, "github": { "repo": "humeai/hume-python-sdk", "checkedAt": "2026-11-02T08:55:18.175954656Z", "stars": 181, "archived": false, "issuesEnabled": true, "pushedAt": "2026-08-17T21:04:05Z", "openIssues": 2, "openPRs": 3, "issuesOpened90d": 2, "issuesClosed90d": 0, "prsMerged90d": 0, "ci": { "branch": "main", "runs": 39, "success": 34, "failure": 4, "other": 1, "latest": "success", "latestAt": "2026-06-17T16:43:53Z" }, "replies": { "sampled": 25, "unanswered": 2, "medianDays": 62.1 } }, "updatedAt": "2026-11-07T18:21:16.323054271Z" } }, "answer": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Hume Octave Voice Design and Cloning + MCP's 54.6 (C), and leads in 4 of 7 scored categories. Hume Octave Voice Design and Cloning + MCP leads on schema \u0026 documentation, agent ergonomics and payments \u0026 pricing.", "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": 27, "category": "maintenance", "leads": "smallest-voice-clone", "name": "Maintenance \u0026 community", "reasons": { "a": "Read as a closing service, since TTS and EVI API access ends on 13 November 2026, with recency from the last change to the listed product's code, and the umbrella rule for the `hume` SDKs. The last release touching TTS code is Python SDK 0.14.1 (17 August 2026, on PyPI per the 1 October check), built from the Fern regeneration dd9d2c4 of the same day, which sets the version to 0.14.1 and changes the TTS validation error types. It is reached only from a Fern generation tag, not from main or a version tag. 79 days, so 20 of 30, as on 1 October. From 6 August there are only 0.14.1 and the 2 October shutdown notice. TypeScript 0.16.1 (18 August) removed the uuid dependency with no TTS code and isn't counted. That is two dated entries, short of three (0). @humeai/mcp-server's newest tag is 0.3.0 on 8 January 2026. A public changelog, gone quiet, and no answering support channel confirmed (5 of 15). Official Python and TypeScript SDKs (15). TypeScript SDK released within 90 days, Python 3.9 to 3.15 (5 of 10). 20 + 0 + 5 + 15 + 5 = 45.", "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": 45, "b": 72 } }, { "by": 25, "category": "security", "leads": "smallest-voice-clone", "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. One account-wide API key and secret pair, regenerated together (10), and 30 minute OAuth client-credential tokens for clients (5), less 10 because the docs show the API key in a WebSocket query string, `?api_key=` (net 5 of 30). Cloning outside Enterprise happens in the Platform behind a legal agreement checkbox, with no verification (5 of 20). API data isn't used for training, but cloning outside Enterprise is a Platform submission, which may be used unless you opt out in settings, and no retention period is published (5 of 15). Usage is tracked in the portal, no per-call log found for TTS (8 of 15). No security.txt, bug bounty, SOC 2 or trust centre found, HIPAA compliance and a DPA on request are claimed (0 of 20). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.", "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": 23, "b": 48 } }, { "by": 17, "category": "schema", "leads": "hume-voice-cloning", "name": "Schema \u0026 documentation", "reasons": { "a": "OpenAPI and AsyncAPI files at dev.hume.ai/openapi.json and asyncapi.json, listed in llms.txt (25). llms.txt and Markdown pages (10). The voice guides explain designing from a description and saving a generation, with less on when not to use it (12 of 20). Inputs typed, utterances take a description and text, saving takes a generation ID and a name (12 of 15). Examples throughout and a page of named error codes with fixes (13 of 15). Versioned `/v0` paths and a public changelog (15). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.", "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": 87, "b": 70 } }, { "by": 15, "category": "transparency", "leads": "smallest-voice-clone", "name": "Transparency \u0026 trust", "reasons": { "a": "Closed service with clear terms, SDKs under MIT (15 of 30). The privacy statement says API data isn't used for training and also that anonymised EVI API data is used by default, a DPA is on request only, and no retention period or subprocessor list is published (10 of 30). Dated deprecations in the changelog, EVI 1 and 2 retired on 30 August 2025 after six weeks' notice (15 of 20). No subprocessor list or data locations found (0 of 20). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.", "b": "Closed service with clear terms naming Smallest, Inc. under California law, effective 21 October 2026 (15 of 30). The Terms rule out training on customer content, the Privacy Policy (18 September 2026) gives retention criteria but no periods, and the Zero Data Retention page is specific about Enterprise options, with nothing on how long cloning samples are kept (16 of 30). A deprecation page with dated statuses (deprecated, rejects, removed, scheduled, retiring) and migration targets (16 of 20). Two regions named with locations. No sub-processor list was found and a DPA page exists unread (10 of 20). 15+16+16+10 = 57." }, "scores": { "a": 57, "b": 72 } }, { "by": 13, "category": "ergonomics", "leads": "hume-voice-cloning", "name": "Agent ergonomics", "reasons": { "a": "The official MCP server has 5 tools, but the JSON TTS endpoint returns base64 audio inside the response, which is heavy in a context window (20 of 25). The voice list paginates and filters by `provider`, so `CUSTOM_VOICE` returns only your voices (20). Named error codes (E0601, E0811 and others) say whether to retry (20). No idempotency key and no job to poll, a design call simply runs again (0 of 20). Few required fields, official Python and TypeScript SDKs (15). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.", "b": "The clone response is a compact object with the voice ID, status and signed URLs to sample clips rather than inline audio (20 of 25). The list call returns every clone on the organisation with no pagination or filter found (10 of 20). Errors carry a message and, on 500, an `error_code` enum with a stated fix, such as retrying `voice_clone_timeout` (16 of 20). No idempotency key, and retrying a timeout can leave a duplicate clone, with deletion through an oddly named route (4 of 20). Two required fields. The Python SDK `smallestai` 5.14.0 is current, while the npm package `smallestai` was last published on 16 April 2025 (12 of 15). 20+10+16+4+12 = 62." }, "scores": { "a": 75, "b": 62 } }, { "by": 10, "category": "payments", "leads": "hume-voice-cloning", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402 (0). Per-unit overage prices are public, $0.15 per 1,000 characters on Creator down to $0.05 on Business (20). A $0 Free plan includes voice design over the API, but cloning over the API is Enterprise-only and the card requirement isn't stated (10 of 20). Signup is a human browser flow (0). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.", "b": "No x402, MPP or L402 (0). Per-character TTS prices are public, about $0.175 per 10,000 characters on Lightning v3.1, but no price per clone is published and the models pricing table marks voice cloning No on pay as you go, against the docs (10). The agents pricing page states $10 in free credits, and whether a card is needed wasn't established (10 of 20). A person signs up in a browser and creates the key in the dashboard (0). 0+10+10+0 = 20." }, "scores": { "a": 30, "b": 20 } } ], "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "Hume AI", "b": "Smallest, Inc.", "name": "Vendor" }, { "a": "https://api.hume.ai/v0/tts", "b": "https://api.smallest.ai/waves/v1/voice-cloning", "name": "Hosted endpoint" }, { "a": "HTTP, stdio", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "not published", "b": "$17.50 per 1M characters", "name": "Price for voice cloning" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT (SDKs)", "b": "Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI", "name": "Licence" }, { "a": "5", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-08-18", "b": "2026-10-29", "name": "Last release" }, { "a": "2026-10-05", "b": "no date given", "name": "Terms last updated" }, { "a": "2025-02-25", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "yes", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "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": "180 stars, 79k npm/wk, 24k PyPI/wk", "b": "none", "name": "Popularity" }, { "a": "2/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Hume Octave Voice Design and Cloning + MCP's 54.6 (C), and leads in 4 of 7 scored categories. Hume Octave Voice Design and Cloning + MCP leads on schema \u0026 documentation, agent ergonomics and payments \u0026 pricing.", "question": "Which is better for AI agents, Hume Octave Voice Design and Cloning + MCP or Smallest.ai Instant Voice Clone?" }, { "answer": "Both need an API key.", "question": "Do Hume Octave Voice Design and Cloning + MCP and Smallest.ai Instant Voice Clone need an API key?" }, { "answer": "Yes. Hume Octave Voice Design and Cloning + MCP has a hosted endpoint at https://api.hume.ai/v0/tts and Smallest.ai Instant Voice Clone at https://api.smallest.ai/waves/v1/voice-cloning.", "question": "Can an agent call Hume Octave Voice Design and Cloning + MCP and Smallest.ai Instant Voice Clone without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 87 against 70", "Agent ergonomics, 75 against 62", "Payments \u0026 pricing, 30 against 20" ], "also": [ "Runs on your own machine" ], "goodFor": "Designing a voice from a description, and for teams already on EVI.", "slug": "hume-voice-cloning", "watchFor": "Hume ends access to the TTS and EVI APIs on 13 November 2026 and deletes account data after that date" }, { "aheadOn": [ "Reliability, 65 against 58", "Security \u0026 auth, 48 against 23", "Maintenance \u0026 community, 72 against 45", "Transparency \u0026 trust, 72 against 57" ], "also": null, "goodFor": "Teams already on Smallest's Lightning TTS or voice agents who want a clone from a short clip in one call.", "slug": "smallest-voice-clone", "watchFor": "The endpoint defaults to `lightning-v3.1`, whose clones stop working on 30 November 2026" } ], "history": { "hume-voice-cloning": [ { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.6, "from": 55.2, "fromGrade": "C", "to": 54.6, "toGrade": "C" } ], "smallest-voice-clone": null }, "job": { "capability": "voice.clone", "name": "Voice cloning" }, "others": [ { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-hume-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Hume Octave Voice Design and Cloning + MCP", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-hume-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-hume-voice-cloning.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Hume Octave Voice Design and Cloning + MCP", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-hume-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-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-hume-voice-cloning.json", "title": "Fish Audio Voice Cloning API vs Hume Octave Voice Design and Cloning + MCP", "url": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-hume-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-hume-voice-cloning.json", "title": "Gradium Voice Cloning and Voice Design vs Hume Octave Voice Design and Cloning + MCP", "url": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-hume-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-inworld-voice-cloning.json", "title": "Hume Octave Voice Design and Cloning + MCP vs Inworld Instant Voice Cloning", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-inworld-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-minimax-voice-cloning.json", "title": "Hume Octave Voice Design and Cloning + MCP vs MiniMax Voice Clone and Voice Design", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-minimax-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-murf-voice-cloning.json", "title": "Hume Octave Voice Design and Cloning + MCP vs Murf Voice Cloning API", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-murf-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-playht-voice-cloning.json", "title": "Hume Octave Voice Design and Cloning + MCP vs PlayHT Voice Cloning API", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-playht-voice-cloning" }, { "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-soniox-voice-cloning.json", "title": "Hume Octave Voice Design and Cloning + MCP vs Soniox Voice Cloning", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-soniox-voice-cloning" }, { "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/hume-voice-cloning-vs-ultravox-voice-cloning.json", "title": "Hume Octave Voice Design and Cloning + MCP vs Ultravox Voice Cloning", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-ultravox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-voicestudio.json", "title": "Hume Octave Voice Design and Cloning + MCP vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-smallest-voice-clone.json", "title": "Inworld Instant Voice Cloning vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone.json", "title": "MiniMax Voice Clone and Voice Design vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone.json", "title": "Murf Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone.json", "title": "PlayHT Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.json", "title": "Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-soniox-voice-cloning.json", "title": "Smallest.ai Instant Voice Clone vs Soniox Voice Cloning", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-soniox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.json", "title": "Smallest.ai Instant Voice Clone vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-ultravox-voice-cloning.json", "title": "Smallest.ai Instant Voice Clone vs Ultravox Voice Cloning", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-ultravox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.json", "title": "Smallest.ai Instant Voice Clone vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio" } ], "panel": null, "scores": [ { "by": 7, "edge": "smallest-voice-clone", "hume-voice-cloning": 58, "key": "reliability", "name": "Reliability", "smallest-voice-clone": 65, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 17, "edge": "hume-voice-cloning", "hume-voice-cloning": 87, "key": "schema", "name": "Schema \u0026 documentation", "smallest-voice-clone": 70, "weight": 13 }, { "by": 13, "edge": "hume-voice-cloning", "hume-voice-cloning": 75, "key": "ergonomics", "name": "Agent ergonomics", "smallest-voice-clone": 62, "weight": 13 }, { "by": 25, "edge": "smallest-voice-clone", "hume-voice-cloning": 23, "key": "security", "name": "Security \u0026 auth", "smallest-voice-clone": 48, "weight": 14 }, { "by": 10, "edge": "hume-voice-cloning", "hume-voice-cloning": 30, "key": "payments", "name": "Payments \u0026 pricing", "smallest-voice-clone": 20, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 27, "edge": "smallest-voice-clone", "hume-voice-cloning": 45, "key": "maintenance", "name": "Maintenance \u0026 community", "smallest-voice-clone": 72, "weight": 7 }, { "by": 15, "edge": "smallest-voice-clone", "hume-voice-cloning": 57, "key": "transparency", "name": "Transparency \u0026 trust", "smallest-voice-clone": 72, "weight": 7 } ], "summary": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Hume Octave Voice Design and Cloning + MCP's 54.6 (C), and leads in 4 of 7 scored categories. Hume Octave Voice Design and Cloning + MCP leads on schema \u0026 documentation, agent ergonomics and payments \u0026 pricing. Both do voice cloning.", "tasks": [ { "a": "$0.45 to $1.35", "b": "$0.16 to $0.18", "cheaper": "smallest-voice-clone", "task": "Narrate a 9,000-character script", "what": "about 1,500 words" } ], "tutorials": [ { "title": "Create and preview a voice in Hume", "tool": "hume-voice-cloning", "url": "https://www.anchorterminal.com/tutorials/hume-voice-cloning/" } ], "verdicts": { "hume-voice-cloning": "Voice design from a natural-language description, saved with one call. Cloning over the API is Enterprise-only. Hume ends API access on 13 November 2026.", "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/hume-voice-cloning-vs-smallest-voice-clone", "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone.min.md" }, "markdown": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Hume Octave Voice Design and Cloning + MCP's 54.6 (C), and leads in 4 of 7 scored categories. Hume Octave Voice Design and Cloning + MCP leads on schema \u0026 documentation, agent ergonomics and payments \u0026 pricing. Both do voice cloning.\n\n- Hume Octave Voice Design and Cloning + MCP: grade C, 54.6/100, rank #899 of 1486. Markdown https://www.anchorterminal.com/tools/hume-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/hume-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### Hume Octave Voice Design and Cloning + MCP (C)\n\nGood for: Designing a voice from a description, and for teams already on EVI.\n\nAhead on:\n- Schema \u0026 documentation, 87 against 70\n- Agent ergonomics, 75 against 62\n- Payments \u0026 pricing, 30 against 20\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: Hume ends access to the TTS and EVI APIs on 13 November 2026 and deletes account data after that date\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- Reliability, 65 against 58\n- Security \u0026 auth, 48 against 23\n- Maintenance \u0026 community, 72 against 45\n- Transparency \u0026 trust, 72 against 57\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 +27\n\n- Hume Octave Voice Design and Cloning + MCP (45): Read as a closing service, since TTS and EVI API access ends on 13 November 2026, with recency from the last change to the listed product's code, and the umbrella rule for the `hume` SDKs. The last release touching TTS code is Python SDK 0.14.1 (17 August 2026, on PyPI per the 1 October check), built from the Fern regeneration dd9d2c4 of the same day, which sets the version to 0.14.1 and changes the TTS validation error types. It is reached only from a Fern generation tag, not from main or a version tag. 79 days, so 20 of 30, as on 1 October. From 6 August there are only 0.14.1 and the 2 October shutdown notice. TypeScript 0.16.1 (18 August) removed the uuid dependency with no TTS code and isn't counted. That is two dated entries, short of three (0). @humeai/mcp-server's newest tag is 0.3.0 on 8 January 2026. A public changelog, gone quiet, and no answering support channel confirmed (5 of 15). Official Python and TypeScript SDKs (15). TypeScript SDK released within 90 days, Python 3.9 to 3.15 (5 of 10). 20 + 0 + 5 + 15 + 5 = 45.\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### Security \u0026 auth: Smallest.ai Instant Voice Clone +25\n\n- Hume Octave Voice Design and Cloning + MCP (23): 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. One account-wide API key and secret pair, regenerated together (10), and 30 minute OAuth client-credential tokens for clients (5), less 10 because the docs show the API key in a WebSocket query string, `?api_key=` (net 5 of 30). Cloning outside Enterprise happens in the Platform behind a legal agreement checkbox, with no verification (5 of 20). API data isn't used for training, but cloning outside Enterprise is a Platform submission, which may be used unless you opt out in settings, and no retention period is published (5 of 15). Usage is tracked in the portal, no per-call log found for TTS (8 of 15). No security.txt, bug bounty, SOC 2 or trust centre found, HIPAA compliance and a DPA on request are claimed (0 of 20). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.\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### Schema \u0026 documentation: Hume Octave Voice Design and Cloning + MCP +17\n\n- Hume Octave Voice Design and Cloning + MCP (87): OpenAPI and AsyncAPI files at dev.hume.ai/openapi.json and asyncapi.json, listed in llms.txt (25). llms.txt and Markdown pages (10). The voice guides explain designing from a description and saving a generation, with less on when not to use it (12 of 20). Inputs typed, utterances take a description and text, saving takes a generation ID and a name (12 of 15). Examples throughout and a page of named error codes with fixes (13 of 15). Versioned `/v0` paths and a public changelog (15). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.\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### Transparency \u0026 trust: Smallest.ai Instant Voice Clone +15\n\n- Hume Octave Voice Design and Cloning + MCP (57): Closed service with clear terms, SDKs under MIT (15 of 30). The privacy statement says API data isn't used for training and also that anonymised EVI API data is used by default, a DPA is on request only, and no retention period or subprocessor list is published (10 of 30). Dated deprecations in the changelog, EVI 1 and 2 retired on 30 August 2025 after six weeks' notice (15 of 20). No subprocessor list or data locations found (0 of 20). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.\n- Smallest.ai Instant Voice Clone (72): Closed service with clear terms naming Smallest, Inc. under California law, effective 21 October 2026 (15 of 30). The Terms rule out training on customer content, the Privacy Policy (18 September 2026) gives retention criteria but no periods, and the Zero Data Retention page is specific about Enterprise options, with nothing on how long cloning samples are kept (16 of 30). A deprecation page with dated statuses (deprecated, rejects, removed, scheduled, retiring) and migration targets (16 of 20). Two regions named with locations. No sub-processor list was found and a DPA page exists unread (10 of 20). 15+16+16+10 = 57.\n\n### Agent ergonomics: Hume Octave Voice Design and Cloning + MCP +13\n\n- Hume Octave Voice Design and Cloning + MCP (75): The official MCP server has 5 tools, but the JSON TTS endpoint returns base64 audio inside the response, which is heavy in a context window (20 of 25). The voice list paginates and filters by `provider`, so `CUSTOM_VOICE` returns only your voices (20). Named error codes (E0601, E0811 and others) say whether to retry (20). No idempotency key and no job to poll, a design call simply runs again (0 of 20). Few required fields, official Python and TypeScript SDKs (15). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.\n- Smallest.ai Instant Voice Clone (62): The clone response is a compact object with the voice ID, status and signed URLs to sample clips rather than inline audio (20 of 25). The list call returns every clone on the organisation with no pagination or filter found (10 of 20). Errors carry a message and, on 500, an `error_code` enum with a stated fix, such as retrying `voice_clone_timeout` (16 of 20). No idempotency key, and retrying a timeout can leave a duplicate clone, with deletion through an oddly named route (4 of 20). Two required fields. The Python SDK `smallestai` 5.14.0 is current, while the npm package `smallestai` was last published on 16 April 2025 (12 of 15). 20+10+16+4+12 = 62.\n\n### Payments \u0026 pricing: Hume Octave Voice Design and Cloning + MCP +10\n\n- Hume Octave Voice Design and Cloning + MCP (30): No x402, MPP or L402 (0). Per-unit overage prices are public, $0.15 per 1,000 characters on Creator down to $0.05 on Business (20). A $0 Free plan includes voice design over the API, but cloning over the API is Enterprise-only and the card requirement isn't stated (10 of 20). Signup is a human browser flow (0). Per the 1 October check, not re-read on 4 November, because Hume's terms of 5 October 2026 (clause 9.4) bar robots and other automated tools from its websites, so every hume.ai host, status.hume.ai included, is paused.\n- Smallest.ai Instant Voice Clone (20): No x402, MPP or L402 (0). Per-character TTS prices are public, about $0.175 per 10,000 characters on Lightning v3.1, but no price per clone is published and the models pricing table marks voice cloning No on pay as you go, against the docs (10). The agents pricing page states $10 in free credits, and whether a card is needed wasn't established (10 of 20). A person signs up in a browser and creates the key in the dashboard (0). 0+10+10+0 = 20.\n\n## Score by category\n\n| Category | Weight | Hume Octave Voice Design and Cloning + MCP | Smallest.ai Instant Voice Clone | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 58 | 65 | Smallest.ai Instant Voice Clone +7 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 87 | 70 | Hume Octave Voice Design and Cloning + MCP +17 |\n| Agent ergonomics | 13% (16.2 this run) | 75 | 62 | Hume Octave Voice Design and Cloning + MCP +13 |\n| Security \u0026 auth | 14% (17.5 this run) | 23 | 48 | Smallest.ai Instant Voice Clone +25 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 20 | Hume Octave Voice Design and Cloning + MCP +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 45 | 72 | Smallest.ai Instant Voice Clone +27 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 57 | 72 | Smallest.ai Instant Voice Clone +15 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **54.6 · C** | **58 · C** | |\n\n## Facts side by side\n\n| Fact | Hume Octave Voice Design and Cloning + MCP | Smallest.ai Instant Voice Clone |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Hume AI | Smallest, Inc. |\n| Hosted endpoint | `https://api.hume.ai/v0/tts` | `https://api.smallest.ai/waves/v1/voice-cloning` |\n| Transports | HTTP, stdio | HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Pay per use |\n| Price for voice cloning | not published | $17.50 per 1M characters |\n| x402 | no | no |\n| Licence | MIT (SDKs) | Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI |\n| Tools exposed | 5 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-08-18 | 2026-10-29 |\n| Terms last updated | 2026-10-05 | no date given |\n| Privacy policy last updated | 2025-02-25 | no date given |\n| Customer content may train models | yes | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | 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 | 180 stars, 79k npm/wk, 24k PyPI/wk | none |\n| Agent reviews | 2/5 (2) | none |\n\n## What the same task costs\n\n| Task | Hume Octave Voice Design and Cloning + MCP | Smallest.ai Instant Voice Clone |\n| --- | --- | --- |\n| Narrate a 9,000-character script | $0.45 to $1.35 | $0.16 to $0.18 |\n\n## How the scores have moved\n\n### Hume Octave Voice Design and Cloning + MCP\n\n- -0.6 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**Hume Octave Voice Design and Cloning + MCP.** Voice design from a natural-language description, saved with one call. Cloning over the API is Enterprise-only. Hume ends API access on 13 November 2026.\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### Hume Octave Voice Design and Cloning + MCP\n\n1. Design with `POST /v0/tts` using an utterance `description` plus sample `text`, then save a `generation_id` with `POST /v0/tts/voices`\n2. Request several generations and pick one. A saved voice can't be tuned afterwards\n3. List your own voices with `GET /v0/tts/voices?provider=CUSTOM_VOICE`\n4. Use `/v0/tts/file` or streaming rather than the JSON endpoint to keep base64 audio out of context\n5. On E0811 back off and retry, the request was rate limited\n\n### Smallest.ai Instant Voice Clone\n\n1. Always pass `model=lightning-v3.1-pro`. The default `lightning-v3.1` clones stop working on 30 November 2026\n2. Use the returned `voiceId` with the matching TTS model and check `modelIds` from `GET /waves/v1/voice-cloning` if a TTS call returns a tiny WAV\n3. Before retrying a `voice_clone_timeout`, list clones by `displayName` so a retry doesn't create a duplicate\n4. Send the server API key, not an access token. The cloning endpoint refuses short-lived tokens\n5. Keep TTS calls from a clone to one at a time on the self-serve plan and back off on 429\n\n## Tutorials\n\n- [Create and preview a voice in Hume](https://www.anchorterminal.com/tutorials/hume-voice-cloning/), for Hume Octave Voice Design and Cloning + MCP\n\n## Questions\n\n### Which is better for AI agents, Hume Octave Voice Design and Cloning + MCP or Smallest.ai Instant Voice Clone?\n\nSmallest.ai Instant Voice Clone scores 58 (C) on agent readiness against Hume Octave Voice Design and Cloning + MCP's 54.6 (C), and leads in 4 of 7 scored categories. Hume Octave Voice Design and Cloning + MCP leads on schema \u0026 documentation, agent ergonomics and payments \u0026 pricing.\n\n### Do Hume Octave Voice Design and Cloning + MCP and Smallest.ai Instant Voice Clone need an API key?\n\nBoth need an API key.\n\n### Can an agent call Hume Octave Voice Design and Cloning + MCP and Smallest.ai Instant Voice Clone without installing anything?\n\nYes. Hume Octave Voice Design and Cloning + MCP has a hosted endpoint at https://api.hume.ai/v0/tts 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/hume-voice-cloning-vs-smallest-voice-clone.json, and with the fewest tokens: https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"hume-voice-cloning\", \"b\": \"smallest-voice-clone\"}`. From a terminal: `anchor compare hume-voice-cloning smallest-voice-clone`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/hume-voice-cloning.json and https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json\n\n## Other comparisons with Hume Octave Voice Design and Cloning + MCP or Smallest.ai Instant Voice Clone\n\n- [Cartesia Voice Cloning API + MCP vs Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-hume-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 Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-hume-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs 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 Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-hume-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 Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-hume-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 Inworld Instant Voice Cloning](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-inworld-voice-cloning.md)\n- [Hume Octave Voice Design and Cloning + MCP vs MiniMax Voice Clone and Voice Design](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-minimax-voice-cloning.md)\n- [Hume Octave Voice Design and Cloning + MCP vs Murf Voice Cloning API](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-murf-voice-cloning.md)\n- [Hume Octave Voice Design and Cloning + MCP vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-playht-voice-cloning.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 Soniox Voice Cloning](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-soniox-voice-cloning.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- [Hume Octave Voice Design and Cloning + MCP vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Hume Octave Voice Design and Cloning + MCP vs VoiceStudio](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-voicestudio.md)\n- [Inworld Instant Voice Cloning vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-smallest-voice-clone.md)\n- [MiniMax Voice Clone and Voice Design vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone.md)\n- [Murf Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone.md)\n- [PlayHT Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone.md)\n- [Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.md)\n- [Smallest.ai Instant Voice Clone vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/smallest-voice-clone-vs-soniox-voice-cloning.md)\n- [Smallest.ai Instant Voice Clone vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/smallest-voice-clone-vs-speechify-voice-cloning.md)\n- [Smallest.ai Instant Voice Clone vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/smallest-voice-clone-vs-ultravox-voice-cloning.md)\n- [Smallest.ai Instant Voice Clone vs VoiceStudio](https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", 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