{ "data": { "a": { "slug": "smallest-voice-clone", "name": "Smallest.ai Instant Voice Clone", "vendor": "Smallest, Inc.", "vendorUrl": "https://smallest.ai", "kind": "model", "category": "voice-cloning", "summary": "Smallest.ai's instant voice cloning API creates a reusable voice for its Lightning text-to-speech models from a 5 to 15 second sample in one multipart POST, returning the voice ID and sample clips of the cloned voice.", "url": "https://www.anchorterminal.com/tools/smallest-voice-clone", "markdownUrl": "https://www.anchorterminal.com/tools/smallest-voice-clone.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/smallest-voice-clone.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json", "dns": "smallest-voice-clone.grade.anchorterminal.com", "license": "Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI", "transports": [ "http" ], "remoteUrl": "https://api.smallest.ai/waves/v1/voice-cloning", "packages": [ { "registry": "pypi", "name": "smallestai" } ], "auth": "api-key", "authNotes": "Bearer API key created in the Smallest dashboard after a browser signup, shown once, revoked by deleting it. Keys have no scopes. Short-lived access tokens minted from a key work on TTS, STT and speech-to-speech routes but are not accepted on the cloning endpoint.", "pricing": "usage", "pricingNotes": "No price per clone is published. Speech from a clone is about $0.175 per 10,000 characters on Lightning v3.1 and $0.195 on v3.1 Pro, pay as you go. The agents pricing page states $10 in free credits. The models pricing table marks voice cloning No on pay as you go, while the docs let any API key clone (checked 2026-11-06).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, llms.txt or the pricing pages (checked 2026-11-06).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://docs.smallest.ai/models/voice-cloning/instant-clone-api", "llmsTxt": "https://docs.smallest.ai/llms.txt", "capabilities": [ "voice.clone", "speech.tts" ], "tags": [ "hosted", "official", "closed-source", "usage", "python", "llms-txt", "status-page", "enterprise", "data-residency" ], "lastRelease": "2026-10-29", "graded": true, "anchor": { "graded": true, "score": 58, "grade": "C", "agentReady": false, "rank": 772, "ranked": true, "rankOf": 1510, "categoryRank": 8, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 62, "maintenance": 72, "payments": 20, "reliability": 65, "schema": 70, "security": 48, "transparency": 72 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "One multipart POST clones a voice from 5 to 15 seconds of audio and returns sample clips, with dated deprecation notices and current changelog entries. The endpoint still defaults to a model whose clones stop working on 30 November 2026, there's no consent field or clone price, and the status feed shows frequent short API outages.", "bestFor": "Teams already on Smallest's Lightning TTS or voice agents who want a clone from a short clip in one call.", "strengths": [ "Synchronous clone from 5 to 15 seconds of audio that returns the voice ID and signed URLs to sample clips of the new voice", "Seven documented error cases with causes, including `voice_clone_timeout` and `voice_clone_error` codes", "A deprecation page dates every retirement and gives the migration steps for clones", "The Terms say customer content isn't used for training, and India and USA region hostnames are documented", "llms.txt and a Markdown copy of every docs page" ], "weaknesses": [ "The endpoint defaults to `lightning-v3.1`, whose clones stop working on 30 November 2026", "No consent or verification field, and no price per clone or clone limit published", "The pricing table marks voice cloning unavailable on pay as you go, while the docs let any key clone", "status.smallest.ai lists dozens of short API outages in 90 days, with a cluster across every region on 13 to 17 September 2026", "No idempotency key, no pagination on the clone list, and plain unscoped API keys" ], "agentNotes": [ "Always pass `model=lightning-v3.1-pro`. The default `lightning-v3.1` clones stop working on 30 November 2026", "Use the returned `voiceId` with the matching TTS model and check `modelIds` from `GET /waves/v1/voice-cloning` if a TTS call returns a tiny WAV", "Before retrying a `voice_clone_timeout`, list clones by `displayName` so a retry doesn't create a duplicate", "Send the server API key, not an access token. The cloning endpoint refuses short-lived tokens", "Keep TTS calls from a clone to one at a time on the self-serve plan and back off on 429" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 58 } ], "editorialScores": { "ergonomics": 62, "maintenance": 72, "payments": 20, "reliability": 65, "schema": 70, "security": 48, "transparency": 57 }, "provenanceScore": 87, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install smallestai", "http": "curl -X POST \"https://api.smallest.ai/waves/v1/voice-cloning\" \\\n -H \"Authorization: Bearer $SMALLEST_API_KEY\" \\\n -F \"displayName=my-custom-voice\" \\\n -F \"file=@/path/to/sample.wav\" \\\n -F \"model=lightning-v3.1-pro\" \\\n -F \"language=en\"" }, "letme": { "capability": "https://letme.dev/voice.clone", "tool": "https://letme.dev/smallest-voice-clone" }, "sameCompany": [ "smallest-pulse-stt", "smallest-lightning-tts" ], "area": "voice", "unitPrices": [ { "item": "Speech from a clone, Lightning v3.1", "unit": "1m-chars", "usd": 17.5, "note": "about $0.175 per 10,000 characters, pay as you go" }, { "item": "Speech from a clone, Lightning v3.1 Pro", "unit": "1m-chars", "usd": 19.5, "note": "about $0.195 per 10,000 characters, pay as you go" } ], "provenance": { "legalEntity": "Smallest, Inc.", "domain": "smallest.ai", "domainRegistered": "2023-09-02", "endpointOnVendorDomain": true, "terms": "https://smallest.ai/terms-of-service", "privacy": "https://smallest.ai/privacy-policy", "statusPage": "https://status.smallest.ai", "changelog": "https://docs.smallest.ai/changelog/models", "securityTxt": "valid", "checked": "2026-11-06", "notes": [ "The Terms of Service (effective 21 October 2026) name Smallest, Inc. under California law with arbitration. The Privacy Policy and Prohibited Use Policy are effective 18 September 2026.", "The Prohibited Use Policy bars data mining, robots or scraping except as the site's robots.txt allows. smallest.ai/robots.txt allows ClaudeBot and all agents on the pages read and sets `Content-Signal: ai-train=yes, search=yes, ai-input=yes`.", "security.txt at smallest.ai/.well-known/security.txt is valid until 31 December 2026, with security@smallest.ai.", "RDAP gives smallest.ai a registration date of 2 September 2023.", "trust.smallest.ai did not answer through our proxy (502) and smallest.ai/security returns 404." ], "score": 87 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/smallest-voice-clone.json", "live": { "slug": "smallest-voice-clone", "probe": { "target": "https://api.smallest.ai/waves/v1/voice-cloning", "method": "get", "lastAt": "2026-11-07T19:22:33.544970142Z", "lastOk": true, "lastStatus": 401, "lastMs": 362, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 362, "p95ms24h": 429, "samples24h": 210, "samples30d": 210, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 13 }, { "date": "2026-11-07", "probes": 197, "ok": 197 } ] }, "vendorStatus": { "page": "https://status.smallest.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:48:45.839717169Z" }, "versions": [ { "registry": "pypi", "name": "smallestai", "version": "5.14.0", "released": "2026-10-07", "seenAt": "2026-11-07T00:06:42.794457962Z" } ], "pypiWeekly": 850, "securityTxt": { "url": "https://smallest.ai/.well-known/security.txt", "state": "valid", "expires": "2026-12-31T23:59:59.000Z", "checkedAt": "2026-11-07T16:01:21.76871346Z" }, "llmsTxt": { "url": "https://docs.smallest.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:34:00.872777157Z" }, "updatedAt": "2026-11-07T19:22:33.544970142Z" } }, "answer": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against VoiceStudio's 50.4 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on agent ergonomics and payments \u0026 pricing.", "b": { "slug": "voicestudio", "name": "VoiceStudio", "vendor": "VoiceStudio maintainers", "vendorUrl": "https://voicestudio.sh", "kind": "mcp", "category": "voice-cloning", "summary": "VoiceStudio runs speech generation, voice cloning, transcription and dubbing on local hardware. Its desktop application exposes HTTP and MCP interfaces for agent-controlled audio workflows.", "url": "https://www.anchorterminal.com/tools/voicestudio", "markdownUrl": "https://www.anchorterminal.com/tools/voicestudio.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/voicestudio.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/voicestudio.json", "dns": "voicestudio.grade.anchorterminal.com", "repo": "https://github.com/debpalash/VoiceStudio", "license": "AGPL-3.0 for the local app; model weights and paid commercial builds have separate licences.", "transports": [ "stdio", "streamable-http" ], "packages": [], "auth": "mixed", "authNotes": "Local MCP over HTTP or a stdio shim. LAN sharing uses a PIN. A local reverse proxy must enforce its own authentication because loopback requests can bypass the sharing PIN.", "pricing": "freemium", "pricingNotes": "The AGPL desktop app is free to run on your own hardware. Pro lists $99 per user a year at launch ($199 list) and Lifetime $199 one-time ($499 list), with purchases marked as coming soon on 5 November 2026. Cloud is an early-access enquiry, not a generally available hosted API.", "priceSummary": "Freemium", "where": "local", "x402": { "level": "no", "evidence": "No machine payment protocol established in the reviewed project documentation.", "endpoints": [] }, "toolCount": 9, "popularity": { "githubStars": 76032, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-19" }, "docsUrl": "https://github.com/debpalash/VoiceStudio#readme", "capabilities": [ "audio.generate", "voice.clone", "audio.transcribe" ], "tags": [ "voice-cloning", "mcp", "freemium" ], "lastRelease": "2026-10-26", "graded": true, "anchor": { "graded": true, "score": 50.4, "grade": "D", "agentReady": false, "rank": 1062, "ranked": true, "rankOf": 1510, "categoryRank": 13, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 70, "maintenance": 50, "payments": 30, "reliability": 45, "schema": 60, "security": 45, "transparency": 49 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-05" }, "negative": 0, "verdict": "VoiceStudio runs speech generation, voice cloning and transcription on local hardware and exposes nine MCP tools, with file output confined to a configured base path. Since 0.5.7, API and MCP calls fail until non-commercial model licences are accepted, and the tools carry no read-only or destructive annotations.", "bestFor": "An agent builder who wants local speech generation, cloning and transcription without a hosted API, and can run models on a GPU, or on a CPU at lower speed.", "strengths": [ "Nine compact MCP tools, with an output mode that returns file paths instead of base64 audio", "File inputs and outputs confined to `OMNIVOICE_MCP_BASE_PATH`, with symlinks resolved before the check", "SECURITY.md promises acknowledgement within 48 hours and names a private reporting route", "Four stable releases between 20 September and 26 October 2026, with a dated changelog", "AGPL-3.0 desktop app, free to download with no account" ], "weaknesses": [ "No readOnlyHint or destructiveHint annotations on any tool", "Plain-HTTP sharing sends the PIN unencrypted, and loopback requests through a local proxy bypass it", "Non-commercial models, the default OmniVoice model included, return a licence error until accepted in the app", "Version 0.5.7, with remote compute moved to the paid Pro build in that release", "The Pro build sends usage and error metadata with no switch to turn it off" ], "agentNotes": [ "Keep the server on loopback unless network authentication has been verified.", "Set `OMNIVOICE_MCP_OUTPUT_MODE=files` and a shared `OMNIVOICE_MCP_BASE_PATH` to keep audio out of context.", "Accept the model's licence in Model Catalogue before the first API or MCP call, or expect a licence error.", "Clone a voice only with its owner's consent, which the terms require and the software cannot check.", "Check the selected model licence before commercial voice use." ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 4, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 50.4 } ], "editorialScores": { "ergonomics": 70, "maintenance": 50, "payments": 30, "reliability": 45, "schema": 60, "security": 45, "transparency": 65 }, "provenanceScore": 33, "checked": { "categories": { "ergonomics": "2026-11-05", "maintenance": "2026-11-05", "payments": "2026-11-05", "reliability": "2026-11-05", "schema": "2026-11-05", "security": "2026-11-05", "transparency": "2026-11-05" }, "last": "2026-11-05", "lastMoved": "2026-11-05", "oldest": "2026-11-05", "stale": false, "staleAfterDays": 90 } }, "letme": { "capability": "https://letme.dev/audio.generate", "tool": "https://letme.dev/voicestudio" }, "area": "voice", "provenance": { "legalEntity": "", "domain": "voicestudio.sh", "domainRegistered": "", "endpointOnVendorDomain": false, "terms": "https://raw.githubusercontent.com/debpalash/VoiceStudio/main/LICENSE", "privacy": "https://voicestudio.sh/privacy", "statusPage": "", "changelog": "https://github.com/debpalash/VoiceStudio/releases", "securityTxt": "unknown", "checked": "2026-11-05", "notes": [ "Assessment covers the named repository. No ownership claim or domain registration was verified.", "The website terms (last updated 4 November 2026) say the repository maintainers own them and that Pro and Lifetime purchases are coming soon. They ask users not to scrape the site at a volume that degrades it and set no ban on automated reading.", ".github/SECURITY.md names security@voicestudio.sh and GitHub Security Advisories for reports. No security.txt was requested." ], "score": 33 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/voicestudio.json", "live": { "slug": "voicestudio", "versions": [ { "registry": "github", "name": "debpalash/VoiceStudio", "version": "v0.5.7", "released": "2026-10-26", "seenAt": "2026-11-07T00:16:12.200288869Z" } ], "githubStars": 102883, "securityTxt": { "url": "https://voicestudio.sh/.well-known/security.txt", "state": "valid", "expires": "2027-08-12T00:00:00.000Z", "checkedAt": "2026-11-07T16:01:41.230397168Z" }, "domain": { "domain": "voicestudio.sh", "checkedAt": "2026-11-01T14:25:58.9012663Z" }, "pages": [ { "url": "https://voicestudio.sh/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:23:30.488565553Z", "changedAt": "2026-11-07T14:23:30.488565553Z", "fingerprint": "3ab0fc57ece5" }, { "url": "https://raw.githubusercontent.com/debpalash/VoiceStudio/main/LICENSE", "kind": "terms", "status": 304, "checkedAt": "2026-11-07T14:20:35.708168466Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "a9905841fee0" } ], "github": { "repo": "debpalash/voicestudio", "checkedAt": "2026-11-02T08:24:55.967220051Z", "stars": 98321, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-02T07:48:12Z", "openIssues": 71, "openPRs": 48, "issuesOpened90d": 895, "issuesClosed90d": 853, "prsMerged90d": 993, "ci": { "branch": "main", "runs": 50, "success": 48, "failure": 1, "other": 1, "latest": "success", "latestAt": "2026-11-01T21:12:28Z" }, "replies": { "sampled": 18, "unanswered": 17, "medianDays": 2 } }, "updatedAt": "2026-11-07T16:01:41.230397168Z" } }, "edges": [ { "by": 23, "category": "transparency", "leads": "smallest-voice-clone", "name": "Transparency \u0026 trust", "reasons": { "a": "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.", "b": "AGPL-3.0 source for the desktop app, with the Pro build under a separate commercial licence (30). Desktop retention settings and the website privacy notice (last updated 4 November 2026) are documented. The notice says the Pro desktop app sends usage and error metadata to Supermetry with no switch to turn it off, while the open-source app's analytics stay opt-in (15). A dated notice that Tauri 0.5.3 is the final Tauri release, with a migration guide, and no stated notice period (5). Open-source desktop analytics are opt-in and disclosed in docs/electron-privacy.md (15). 30+15+5+15 = 65." }, "scores": { "a": 72, "b": 49 } }, { "by": 22, "category": "maintenance", "leads": "smallest-voice-clone", "name": "Maintenance \u0026 community", "reasons": { "a": "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.", "b": "Version 0.5.7 released on 26 October 2026, 10 days before this check (30). Four stable releases since 7 August, 0.5.4 (20 September), 0.5.5 (22 September), 0.5.6 (23 September) and 0.5.7 (26 October). The three 0.5.7 betas don't count (20). Issue and pull request replies couldn't be read, since GitHub's pages are closed to us (0, unchecked). No official MCP registry entry was found on a readable page (0). Package health not established. CI is public and 0.5.7 updated bundled dependencies past published advisories, but the CI results couldn't be read (0). 30+20+0+0+0 = 50." }, "scores": { "a": 72, "b": 50 } }, { "by": 20, "category": "reliability", "leads": "smallest-voice-clone", "name": "Reliability", "reasons": { "a": "Graded on the hosted cloning API with the hosted lines. status.smallest.ai is the vendor's own status page with components per region and a dated incident feed (20). The feed, read on 6 November, has dozens of automated outage alerts on the API components in the 90 days from 8 August, most a few minutes long, and a cluster across every API region from 13 to 17 September. The 60-day uptime bars read 99.790 per cent for API USA and 99.849 per cent for API Global. No single outage of an hour was found, but repeated wide outages read as one major episode (10). Rate limits are published for TTS (one concurrent request, 100 a minute on pay as you go), while the per-organisation clone limit has no number (10 of 15). The limits page says to handle 429 gracefully and the clone errors say to retry a timeout, with no Retry-After, backoff figures or idempotency key (5 of 15). The pricing table lists an Enterprise SLA of 99.99 per cent (10). Instant cloning carries no beta label (10). 20+10+10+5+10+10 = 65.", "b": "Read with the local-package rubric, as a desktop app with a local MCP server over Streamable HTTP or a stdio shim. Installers for Windows, macOS, Linux, Android and iPhone on each GitHub release, with platforms and runtime setup documented (20). A public GitHub Actions workflow runs pytest on the backend and tests, the frontend tests and Electron tests on every pull request and push to main. Its results couldn't be read, since GitHub's pages are closed to us (15). Open crash and regression issues couldn't be read for the same reason (0, unchecked). Dated 0.x releases in CHANGELOG.md with Changed, Added, Removed and Fixed sections and upgrade notes, but no semver promise at 0.5 (10, the earlier partial, kept). Version 0.5.7, not 1.0 and not declared stable (0). 20+15+0+10+0 = 45." }, "scores": { "a": 65, "b": 45 } }, { "by": 10, "category": "schema", "leads": "smallest-voice-clone", "name": "Schema \u0026 documentation", "reasons": { "a": "The API reference pages are generated with typed fields, enums and error schemas, but no OpenAPI file was found linked from the docs or llms.txt (5 of 25). llms.txt and a Markdown copy of every page (10). The guide says when to use the Pro pool, how to check `modelIds` before synthesis and why a mismatched clone returns empty audio, while the reference still names the retiring default (14 of 20). `model` and `language` are enums validated by the server, with required `displayName` and `file`, a 5 MB limit and MIME types listed, and `tags` as a comma-separated string (12 of 15). Examples in curl, Python and Node.js and a table of seven error cases with causes (14 of 15). Paths under `/v1`, a deprecation page with dated statuses and a models changelog with entries on 21, 24, 26, 28 and 29 October 2026 (15). 5+10+14+12+14+15 = 70.", "b": "docs/mcp.md is a Markdown guide in the repository, and voicestudio.sh says its docs also ship as Markdown and llms.txt (10). The guide's tool table names nine tools with a line on what each does, and the tool docstrings say what each returns and when a path or base64 input applies (15). Parameters are typed in the tool signatures and documented in the guide (format one of wav, ogg or opus, output modes, base path rules), but no JSON Schema is published on a docs page, so the contract line scores 0 (10 for typed inputs). Client configuration examples for Claude Code, Cursor and Codex CLI and documented refusals and error objects (10). CHANGELOG.md with dated releases, a Tauri to Electron migration guide and a supported-versions table (15). 0+10+15+10+10+15 = 60." }, "scores": { "a": 70, "b": 60 } }, { "by": 10, "category": "payments", "leads": "voicestudio", "name": "Payments \u0026 pricing", "reasons": { "a": "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.", "b": "No machine payment protocol (0). The Pro page lists Pro at $99 per user a year at launch ($199 list) and Lifetime at $199 one-time ($499 list), plan prices only, with purchases marked as coming soon (10). The AGPL desktop app is free to download and run with no account (20). Pro needs an account and a checkout, and the 7-day Pro trial needs an account (0). 0+10+20+0 = 30." }, "scores": { "a": 20, "b": 30 } }, { "by": 8, "category": "ergonomics", "leads": "voicestudio", "name": "Agent ergonomics", "reasons": { "a": "The clone response is a compact object with the voice ID, status and signed URLs to sample clips rather than inline audio (20 of 25). The list call returns every clone on the organisation with no pagination or filter found (10 of 20). Errors carry a message and, on 500, an `error_code` enum with a stated fix, such as retrying `voice_clone_timeout` (16 of 20). No idempotency key, and retrying a timeout can leave a duplicate clone, with deletion through an oddly named route (4 of 20). Two required fields. The Python SDK `smallestai` 5.14.0 is current, while the npm package `smallestai` was last published on 16 April 2025 (12 of 15). 20+10+16+4+12 = 62.", "b": "Nine tools (generate_speech, clone_voice, describe_voice, design_voice, transcribe, list_voices, list_personalities, list_languages, check_health) with docstrings of about 4,600 characters in all, read from the server source on 5 November 2026 (25, ten or fewer compact tools). Output modes keep audio out of context (`OMNIVOICE_MCP_OUTPUT_MODE=files` returns a URL and path), and recent history returns at most 20 items (20). A missing voice returns a JSON object with an error message, and path arguments without a base path are refused with a reason (10, the earlier partial, kept). File inputs are confined to the base path, but no tool carries readOnlyHint or destructiveHint annotations and no retry guarantee is documented (5). Client configuration examples and sensible defaults (WAV output, agent-bound voice), no official SDKs (10). 25+20+10+5+10 = 70." }, "scores": { "a": 62, "b": 70 } } ], "facts": [ { "a": "Model API", "b": "MCP server", "name": "Kind" }, { "a": "Smallest, Inc.", "b": "VoiceStudio maintainers", "name": "Vendor" }, { "a": "https://api.smallest.ai/waves/v1/voice-cloning", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "stdio, Streamable HTTP", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Pay per use", "b": "Freemium", "name": "Pricing" }, { "a": "$17.50 per 1M characters", "b": "not published", "name": "Price for voice cloning" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI", "b": "AGPL-3.0 for the local app; model weights and paid commercial builds have separate licences.", "name": "Licence" }, { "a": "none", "b": "9", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-10-29", "b": "2026-10-26", "name": "Last release" }, { "a": "no date given", "b": "no date given", "name": "Terms last updated" }, { "a": "no date given", "b": "2026-10-08", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "76k stars", "name": "Popularity" }, { "a": "none", "b": "3/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against VoiceStudio's 50.4 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on agent ergonomics and payments \u0026 pricing.", "question": "Which is better for AI agents, Smallest.ai Instant Voice Clone or VoiceStudio?" }, { "answer": "Smallest.ai Instant Voice Clone needs an API key. VoiceStudio takes an API key or an OAuth sign-in.", "question": "Do Smallest.ai Instant Voice Clone and VoiceStudio need an API key?" }, { "answer": "Smallest.ai Instant Voice Clone has a hosted endpoint at https://api.smallest.ai/waves/v1/voice-cloning. VoiceStudio runs on your own machine, with no hosted endpoint listed.", "question": "Can an agent call Smallest.ai Instant Voice Clone and VoiceStudio without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 65 against 45", "Schema \u0026 documentation, 70 against 60", "Maintenance \u0026 community, 72 against 50", "Transparency \u0026 trust, 72 against 49" ], "also": [ "A hosted endpoint, with nothing to install" ], "goodFor": "Teams already on Smallest's Lightning TTS or voice agents who want a clone from a short clip in one call.", "slug": "smallest-voice-clone", "watchFor": "The endpoint defaults to `lightning-v3.1`, whose clones stop working on 30 November 2026" }, { "aheadOn": [ "Agent ergonomics, 70 against 62", "Payments \u0026 pricing, 30 against 20" ], "also": [ "Runs on your own machine" ], "goodFor": "An agent builder who wants local speech generation, cloning and transcription without a hosted API, and can run models on a GPU, or on a CPU at lower speed.", "slug": "voicestudio", "watchFor": "No readOnlyHint or destructiveHint annotations on any tool" } ], "history": { "smallest-voice-clone": null, "voicestudio": [ { "causes": [ "evidence", "correction" ], "date": "2026-11-05", "delta": 3.7, "from": 46.7, "fromGrade": "D", "to": 50.4, "toGrade": "D" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.5, "from": 46.2, "fromGrade": "D", "to": 46.7, "toGrade": "D" } ] }, "job": { "capability": "voice.clone", "name": "Voice cloning" }, "others": [ { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-smallest-voice-clone.json", "title": "Cartesia Voice Cloning API + MCP vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio.json", "title": "Cartesia Voice Cloning API + MCP vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-smallest-voice-clone.json", "title": "Fish Audio Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-voicestudio.json", "title": "Fish Audio Voice Cloning API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-smallest-voice-clone.json", "title": "Gradium Voice Cloning and Voice Design vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-voicestudio.json", "title": "Gradium Voice Cloning and Voice Design vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone.json", "title": "Hume Octave Voice Design and Cloning + MCP vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-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/inworld-voice-cloning-vs-voicestudio.json", "title": "Inworld Instant Voice Cloning vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone.json", "title": "MiniMax Voice Clone and Voice Design vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-voicestudio.json", "title": "MiniMax Voice Clone and Voice Design vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone.json", "title": "Murf Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-voicestudio.json", "title": "Murf Voice Cloning API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone.json", "title": "PlayHT Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-voicestudio.json", "title": "PlayHT Voice Cloning API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.json", "title": "Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-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/soniox-voice-cloning-vs-voicestudio.json", "title": "Soniox Voice Cloning vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-voicestudio.json", "title": "Speechify API Voice Cloning vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/ultravox-voice-cloning-vs-voicestudio.json", "title": "Ultravox Voice Cloning vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/ultravox-voice-cloning-vs-voicestudio" } ], "panel": null, "scores": [ { "by": 20, "edge": "smallest-voice-clone", "key": "reliability", "name": "Reliability", "smallest-voice-clone": 65, "voicestudio": 45, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 10, "edge": "smallest-voice-clone", "key": "schema", "name": "Schema \u0026 documentation", "smallest-voice-clone": 70, "voicestudio": 60, "weight": 13 }, { "by": 8, "edge": "voicestudio", "key": "ergonomics", "name": "Agent ergonomics", "smallest-voice-clone": 62, "voicestudio": 70, "weight": 13 }, { "by": 3, "edge": "smallest-voice-clone", "key": "security", "name": "Security \u0026 auth", "smallest-voice-clone": 48, "voicestudio": 45, "weight": 14 }, { "by": 10, "edge": "voicestudio", "key": "payments", "name": "Payments \u0026 pricing", "smallest-voice-clone": 20, "voicestudio": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 22, "edge": "smallest-voice-clone", "key": "maintenance", "name": "Maintenance \u0026 community", "smallest-voice-clone": 72, "voicestudio": 50, "weight": 7 }, { "by": 23, "edge": "smallest-voice-clone", "key": "transparency", "name": "Transparency \u0026 trust", "smallest-voice-clone": 72, "voicestudio": 49, "weight": 7 } ], "summary": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against VoiceStudio's 50.4 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on agent ergonomics and payments \u0026 pricing. Both do voice cloning.", "tasks": null, "tutorials": [], "verdicts": { "smallest-voice-clone": "One multipart POST clones a voice from 5 to 15 seconds of audio and returns sample clips, with dated deprecation notices and current changelog entries. The endpoint still defaults to a model whose clones stop working on 30 November 2026, there's no consent field or clone price, and the status feed shows frequent short API outages.", "voicestudio": "VoiceStudio runs speech generation, voice cloning and transcription on local hardware and exposes nine MCP tools, with file output confined to a configured base path. Since 0.5.7, API and MCP calls fail until non-commercial model licences are accepted, and the tools carry no read-only or destructive annotations." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio", "json": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.min.md" }, "markdown": "Smallest.ai Instant Voice Clone scores 58 (C) on agent readiness against VoiceStudio's 50.4 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on agent ergonomics and payments \u0026 pricing. Both do voice cloning.\n\n- Smallest.ai Instant Voice Clone: grade C, 58/100, rank #772 of 1510. Markdown https://www.anchorterminal.com/tools/smallest-voice-clone.md · JSON https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json\n- VoiceStudio: grade D, 50.4/100, rank #1062 of 1510. Markdown https://www.anchorterminal.com/tools/voicestudio.md · JSON https://www.anchorterminal.com/api/v1/tools/voicestudio.json\n- Best voice cloning and custom voice APIs for AI agents: https://www.anchorterminal.com/best/voice-cloning/index.md\n- All 133 cloning comparisons: https://www.anchorterminal.com/compare/voice-cloning/index.md\n\n## Which one, for what\n\n### Smallest.ai Instant Voice Clone (C)\n\nGood for: Teams already on Smallest's Lightning TTS or voice agents who want a clone from a short clip in one call.\n\nAhead on:\n- Reliability, 65 against 45\n- Schema \u0026 documentation, 70 against 60\n- Maintenance \u0026 community, 72 against 50\n- Transparency \u0026 trust, 72 against 49\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: The endpoint defaults to `lightning-v3.1`, whose clones stop working on 30 November 2026\n\n### VoiceStudio (D)\n\nGood for: An agent builder who wants local speech generation, cloning and transcription without a hosted API, and can run models on a GPU, or on a CPU at lower speed.\n\nAhead on:\n- Agent ergonomics, 70 against 62\n- Payments \u0026 pricing, 30 against 20\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: No readOnlyHint or destructiveHint annotations on any tool\n\n\n## Why the edge\n\n### Transparency \u0026 trust: Smallest.ai Instant Voice Clone +23\n\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- VoiceStudio (49): AGPL-3.0 source for the desktop app, with the Pro build under a separate commercial licence (30). Desktop retention settings and the website privacy notice (last updated 4 November 2026) are documented. The notice says the Pro desktop app sends usage and error metadata to Supermetry with no switch to turn it off, while the open-source app's analytics stay opt-in (15). A dated notice that Tauri 0.5.3 is the final Tauri release, with a migration guide, and no stated notice period (5). Open-source desktop analytics are opt-in and disclosed in docs/electron-privacy.md (15). 30+15+5+15 = 65.\n\n### Maintenance \u0026 community: Smallest.ai Instant Voice Clone +22\n\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- VoiceStudio (50): Version 0.5.7 released on 26 October 2026, 10 days before this check (30). Four stable releases since 7 August, 0.5.4 (20 September), 0.5.5 (22 September), 0.5.6 (23 September) and 0.5.7 (26 October). The three 0.5.7 betas don't count (20). Issue and pull request replies couldn't be read, since GitHub's pages are closed to us (0, unchecked). No official MCP registry entry was found on a readable page (0). Package health not established. CI is public and 0.5.7 updated bundled dependencies past published advisories, but the CI results couldn't be read (0). 30+20+0+0+0 = 50.\n\n### Reliability: Smallest.ai Instant Voice Clone +20\n\n- Smallest.ai Instant Voice Clone (65): Graded on the hosted cloning API with the hosted lines. status.smallest.ai is the vendor's own status page with components per region and a dated incident feed (20). The feed, read on 6 November, has dozens of automated outage alerts on the API components in the 90 days from 8 August, most a few minutes long, and a cluster across every API region from 13 to 17 September. The 60-day uptime bars read 99.790 per cent for API USA and 99.849 per cent for API Global. No single outage of an hour was found, but repeated wide outages read as one major episode (10). Rate limits are published for TTS (one concurrent request, 100 a minute on pay as you go), while the per-organisation clone limit has no number (10 of 15). The limits page says to handle 429 gracefully and the clone errors say to retry a timeout, with no Retry-After, backoff figures or idempotency key (5 of 15). The pricing table lists an Enterprise SLA of 99.99 per cent (10). Instant cloning carries no beta label (10). 20+10+10+5+10+10 = 65.\n- VoiceStudio (45): Read with the local-package rubric, as a desktop app with a local MCP server over Streamable HTTP or a stdio shim. Installers for Windows, macOS, Linux, Android and iPhone on each GitHub release, with platforms and runtime setup documented (20). A public GitHub Actions workflow runs pytest on the backend and tests, the frontend tests and Electron tests on every pull request and push to main. Its results couldn't be read, since GitHub's pages are closed to us (15). Open crash and regression issues couldn't be read for the same reason (0, unchecked). Dated 0.x releases in CHANGELOG.md with Changed, Added, Removed and Fixed sections and upgrade notes, but no semver promise at 0.5 (10, the earlier partial, kept). Version 0.5.7, not 1.0 and not declared stable (0). 20+15+0+10+0 = 45.\n\n### Schema \u0026 documentation: Smallest.ai Instant Voice Clone +10\n\n- Smallest.ai Instant Voice Clone (70): The API reference pages are generated with typed fields, enums and error schemas, but no OpenAPI file was found linked from the docs or llms.txt (5 of 25). llms.txt and a Markdown copy of every page (10). The guide says when to use the Pro pool, how to check `modelIds` before synthesis and why a mismatched clone returns empty audio, while the reference still names the retiring default (14 of 20). `model` and `language` are enums validated by the server, with required `displayName` and `file`, a 5 MB limit and MIME types listed, and `tags` as a comma-separated string (12 of 15). Examples in curl, Python and Node.js and a table of seven error cases with causes (14 of 15). Paths under `/v1`, a deprecation page with dated statuses and a models changelog with entries on 21, 24, 26, 28 and 29 October 2026 (15). 5+10+14+12+14+15 = 70.\n- VoiceStudio (60): docs/mcp.md is a Markdown guide in the repository, and voicestudio.sh says its docs also ship as Markdown and llms.txt (10). The guide's tool table names nine tools with a line on what each does, and the tool docstrings say what each returns and when a path or base64 input applies (15). Parameters are typed in the tool signatures and documented in the guide (format one of wav, ogg or opus, output modes, base path rules), but no JSON Schema is published on a docs page, so the contract line scores 0 (10 for typed inputs). Client configuration examples for Claude Code, Cursor and Codex CLI and documented refusals and error objects (10). CHANGELOG.md with dated releases, a Tauri to Electron migration guide and a supported-versions table (15). 0+10+15+10+10+15 = 60.\n\n### Payments \u0026 pricing: VoiceStudio +10\n\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- VoiceStudio (30): No machine payment protocol (0). The Pro page lists Pro at $99 per user a year at launch ($199 list) and Lifetime at $199 one-time ($499 list), plan prices only, with purchases marked as coming soon (10). The AGPL desktop app is free to download and run with no account (20). Pro needs an account and a checkout, and the 7-day Pro trial needs an account (0). 0+10+20+0 = 30.\n\n### Agent ergonomics: VoiceStudio +8\n\n- Smallest.ai Instant Voice Clone (62): The clone response is a compact object with the voice ID, status and signed URLs to sample clips rather than inline audio (20 of 25). The list call returns every clone on the organisation with no pagination or filter found (10 of 20). Errors carry a message and, on 500, an `error_code` enum with a stated fix, such as retrying `voice_clone_timeout` (16 of 20). No idempotency key, and retrying a timeout can leave a duplicate clone, with deletion through an oddly named route (4 of 20). Two required fields. The Python SDK `smallestai` 5.14.0 is current, while the npm package `smallestai` was last published on 16 April 2025 (12 of 15). 20+10+16+4+12 = 62.\n- VoiceStudio (70): Nine tools (generate_speech, clone_voice, describe_voice, design_voice, transcribe, list_voices, list_personalities, list_languages, check_health) with docstrings of about 4,600 characters in all, read from the server source on 5 November 2026 (25, ten or fewer compact tools). Output modes keep audio out of context (`OMNIVOICE_MCP_OUTPUT_MODE=files` returns a URL and path), and recent history returns at most 20 items (20). A missing voice returns a JSON object with an error message, and path arguments without a base path are refused with a reason (10, the earlier partial, kept). File inputs are confined to the base path, but no tool carries readOnlyHint or destructiveHint annotations and no retry guarantee is documented (5). Client configuration examples and sensible defaults (WAV output, agent-bound voice), no official SDKs (10). 25+20+10+5+10 = 70.\n\n## Score by category\n\n| Category | Weight | Smallest.ai Instant Voice Clone | VoiceStudio | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 65 | 45 | Smallest.ai Instant Voice Clone +20 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 70 | 60 | Smallest.ai Instant Voice Clone +10 |\n| Agent ergonomics | 13% (16.2 this run) | 62 | 70 | VoiceStudio +8 |\n| Security \u0026 auth | 14% (17.5 this run) | 48 | 45 | Smallest.ai Instant Voice Clone +3 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 30 | VoiceStudio +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 72 | 50 | Smallest.ai Instant Voice Clone +22 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 72 | 49 | Smallest.ai Instant Voice Clone +23 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **58 · C** | **50.4 · D** | |\n\n## Facts side by side\n\n| Fact | Smallest.ai Instant Voice Clone | VoiceStudio |\n| --- | --- | --- |\n| Kind | Model API | MCP server |\n| Vendor | Smallest, Inc. | VoiceStudio maintainers |\n| Hosted endpoint | `https://api.smallest.ai/waves/v1/voice-cloning` | no (local only) |\n| Transports | HTTP | stdio, Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Freemium |\n| Price for voice cloning | $17.50 per 1M characters | not published |\n| x402 | no | no |\n| Licence | Proprietary service under Smallest's Terms of Service. The `smallestai` Python SDK is on PyPI | AGPL-3.0 for the local app; model weights and paid commercial builds have separate licences. |\n| Tools exposed | none | 9 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| Last release | 2026-10-29 | 2026-10-26 |\n| Terms last updated | no date given | no date given |\n| Privacy policy last updated | no date given | 2026-10-08 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Popularity | none | 76k stars |\n| Agent reviews | none | 3/5 (4) |\n\n## How the scores have moved\n\n### Smallest.ai Instant Voice Clone\n\nNo score change since it was listed.\n\n### VoiceStudio\n\n- +3.7 on 5 November 2026: new evidence, correction\n- +0.5 on 27 October 2026: checklist\n\n## Verdicts\n\n**Smallest.ai Instant Voice Clone.** One multipart POST clones a voice from 5 to 15 seconds of audio and returns sample clips, with dated deprecation notices and current changelog entries. The endpoint still defaults to a model whose clones stop working on 30 November 2026, there's no consent field or clone price, and the status feed shows frequent short API outages.\n\n**VoiceStudio.** VoiceStudio runs speech generation, voice cloning and transcription on local hardware and exposes nine MCP tools, with file output confined to a configured base path. Since 0.5.7, API and MCP calls fail until non-commercial model licences are accepted, and the tools carry no read-only or destructive annotations.\n\n## Before you call either\n\n### Smallest.ai Instant Voice Clone\n\n1. Always pass `model=lightning-v3.1-pro`. The default `lightning-v3.1` clones stop working on 30 November 2026\n2. Use the returned `voiceId` with the matching TTS model and check `modelIds` from `GET /waves/v1/voice-cloning` if a TTS call returns a tiny WAV\n3. Before retrying a `voice_clone_timeout`, list clones by `displayName` so a retry doesn't create a duplicate\n4. Send the server API key, not an access token. The cloning endpoint refuses short-lived tokens\n5. Keep TTS calls from a clone to one at a time on the self-serve plan and back off on 429\n\n### VoiceStudio\n\n1. Keep the server on loopback unless network authentication has been verified.\n2. Set `OMNIVOICE_MCP_OUTPUT_MODE=files` and a shared `OMNIVOICE_MCP_BASE_PATH` to keep audio out of context.\n3. Accept the model's licence in Model Catalogue before the first API or MCP call, or expect a licence error.\n4. Clone a voice only with its owner's consent, which the terms require and the software cannot check.\n5. Check the selected model licence before commercial voice use.\n\n## Questions\n\n### Which is better for AI agents, Smallest.ai Instant Voice Clone or VoiceStudio?\n\nSmallest.ai Instant Voice Clone scores 58 (C) on agent readiness against VoiceStudio's 50.4 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on agent ergonomics and payments \u0026 pricing.\n\n### Do Smallest.ai Instant Voice Clone and VoiceStudio need an API key?\n\nSmallest.ai Instant Voice Clone needs an API key. VoiceStudio takes an API key or an OAuth sign-in.\n\n### Can an agent call Smallest.ai Instant Voice Clone and VoiceStudio without installing anything?\n\nSmallest.ai Instant Voice Clone has a hosted endpoint at https://api.smallest.ai/waves/v1/voice-cloning. VoiceStudio runs on your own machine, with no hosted endpoint listed.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.json, and with the fewest tokens: https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"smallest-voice-clone\", \"b\": \"voicestudio\"}`. From a terminal: `anchor compare smallest-voice-clone voicestudio`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/smallest-voice-clone.json and https://www.anchorterminal.com/api/v1/tools/voicestudio.json\n\n## Other comparisons with Smallest.ai Instant Voice Clone or VoiceStudio\n\n- [Cartesia Voice Cloning API + MCP vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-smallest-voice-clone.md)\n- [Cartesia Voice Cloning API + MCP vs VoiceStudio](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-smallest-voice-clone.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs VoiceStudio](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio.md)\n- [Fish Audio Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-smallest-voice-clone.md)\n- [Fish Audio Voice Cloning API vs VoiceStudio](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-voicestudio.md)\n- [Gradium Voice Cloning and Voice Design vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-smallest-voice-clone.md)\n- [Gradium Voice Cloning and Voice Design vs VoiceStudio](https://www.anchorterminal.com/compare/gradium-voice-cloning-vs-voicestudio.md)\n- [Hume Octave Voice Design and Cloning + MCP vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-smallest-voice-clone.md)\n- [Hume Octave Voice Design and Cloning + MCP vs 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- [Inworld Instant Voice Cloning vs VoiceStudio](https://www.anchorterminal.com/compare/inworld-voice-cloning-vs-voicestudio.md)\n- [MiniMax Voice Clone and Voice Design vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-smallest-voice-clone.md)\n- [MiniMax Voice Clone and Voice Design vs VoiceStudio](https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-voicestudio.md)\n- [Murf Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-smallest-voice-clone.md)\n- [Murf Voice Cloning API vs VoiceStudio](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-voicestudio.md)\n- [PlayHT Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-smallest-voice-clone.md)\n- [PlayHT Voice Cloning API vs VoiceStudio](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-voicestudio.md)\n- [Resemble AI Voice Cloning API vs Smallest.ai Instant Voice Clone](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-smallest-voice-clone.md)\n- [Resemble AI Voice Cloning API vs 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- [Soniox Voice Cloning vs VoiceStudio](https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-voicestudio.md)\n- [Speechify API Voice Cloning vs VoiceStudio](https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-voicestudio.md)\n- [Ultravox Voice Cloning vs VoiceStudio](https://www.anchorterminal.com/compare/ultravox-voice-cloning-vs-voicestudio.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": 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Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Smallest.ai Instant Voice Clone C 58", "VoiceStudio D 50.4", "scores" ], "h1": "Smallest.ai Instant Voice Clone vs VoiceStudio", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/smallest-voice-clone-vs-voicestudio", "published": "2026-10-01", "section": "tools", "title": "Smallest.ai Instant Voice Clone vs VoiceStudio for AI agents (2026)", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/smallest-voice-clone-vs-voicestudio" }, "tokens": { "markdown": 5300, "slim": 2980 }, "version": 1 }