{ "data": { "a": { "slug": "loudly", "name": "Loudly Music API", "vendor": "Loudly GmbH", "vendorUrl": "https://www.loudly.com", "kind": "model", "category": "music-generation", "summary": "Loudly's API for generating music for business applications.", "url": "https://www.anchorterminal.com/tools/loudly", "markdownUrl": "https://www.anchorterminal.com/tools/loudly.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/loudly.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/loudly.json", "transports": [ "http" ], "remoteUrl": "https://soundtracks.loudly.com/api", "packages": [], "auth": "api-key", "authNotes": "Key from the developer portal at loudly.com/developers, sent in an `API-KEY` header. A wrong key returns 401 `Unknown API-KEY`.", "pricing": "usage", "pricingNotes": "Billed per track generation. Pay-as-you-go credits never expire (the per-track PAYG price is shown only after sign-in). The monthly subscription starts at 500 tracks at $0.15 a track and falls to $0.071 a track at 50,000 tracks a month. A free allowance comes with a new key and `test=true` calls return a dummy song without spending credits (https://www.loudly.com/developers/pricing).", "priceSummary": "$0.15 / credit", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 in the API docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://www.loudly.com/developers", "llmsTxt": "https://www.loudly.com/llms.txt", "openapi": "https://b2b-soundtracks-swagger-prd.loudly.com/swagger/b2b_swagger.yaml", "capabilities": [ "audio.music", "audio.stems", "audio.vocals" ], "tags": [ "hosted", "closed-source", "commercial-licence", "openapi", "llms-txt", "free-tier" ], "graded": true, "anchor": { "graded": true, "score": 38.1, "grade": "E", "agentReady": false, "rank": 923, "ranked": true, "rankOf": 950, "categoryRank": 9, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 51, "maintenance": 3, "payments": 30, "reliability": 15, "schema": 75, "security": 35, "transparency": 51 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Public OpenAPI 3.0 spec with error schemas for 400, 402, 403, 404 and 500. No status page, changelog, rate limits or 429 guidance.", "bestFor": "Apps that need instrumental tracks with stems, remix and mastering from one vendor under a royalty-free licence, and that can start on a free allowance.", "strengths": [ "Public OpenAPI 3.0 spec with error schemas for 400, 402, 403, 404 and 500", "Free track allowance on a new key, and `test=true` returns a dummy song at no cost", "Stems, remix and mastering in the same API, with tracks from 30 to 420 seconds", "Royalty-free, perpetual, worldwide licence for output" ], "weaknesses": [ "No status page, changelog, rate limits or 429 guidance", "One unscoped key per account, and no security.txt or disclosure policy", "Vocals and 12-stem splits need Loudly to switch on account flags", "No official SDK, and requests are multipart form data" ], "agentNotes": [ "Send `test=true` while wiring up. It returns a dummy song and spends no credits", "Call `GET /api/ai/genres` first. Genre, BPM range and instrument names must match that list", "Treat 402 as out of credits and stop, not retry", "A 403 on Manta routes means the account flag is off, not a bad key" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 38.1 } ], "editorialScores": { "ergonomics": 51, "maintenance": 3, "payments": 30, "reliability": 15, "schema": 75, "security": 35, "transparency": 42 }, "provenanceScore": 59 }, "connect": { "http": "curl -X POST https://soundtracks.loudly.com/api/ai/prompt/songs -H \"API-KEY: $LOUDLY_API_KEY\" \\\n -F prompt=\"energetic house track with a flute melody\" -F duration=60 -F test=true" }, "letme": { "capability": "https://letme.dev/audio.music", "tool": "https://letme.dev/loudly" }, "area": "content", "unitPrices": [ { "item": "Subscription, 500 tracks a month", "unit": "credit", "usd": 0.15, "note": "one credit is one track generation" }, { "item": "Subscription, 50,000 tracks a month", "unit": "credit", "usd": 0.071, "note": "lowest published volume tier" }, { "item": "Subscription entry tier", "unit": "month", "usd": 75, "note": "500 tracks at $0.15" } ], "provenance": { "legalEntity": "Loudly GmbH", "domain": "loudly.com", "domainRegistered": "1998-04-17", "domainNote": "loudly.com was registered in 1998, long before Loudly GmbH existed, so the domain was acquired later.", "endpointOnVendorDomain": true, "terms": "https://www.loudly.com/terms-and-conditions", "privacy": "https://www.iubenda.com/privacy-policy/94072064/full-legal", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "Imprint names Loudly GmbH, Berlin, Germany (https://www.loudly.com/imprint)" ], "score": 59 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/loudly.json", "live": { "slug": "loudly", "probe": { "target": "https://soundtracks.loudly.com/api", "method": "get", "lastAt": "2026-10-10T02:55:00.862144723Z", "lastOk": true, "lastStatus": 401, "lastMs": 361, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 99.8, "p50ms24h": 383, "p95ms24h": 1324, "samples24h": 249, "samples30d": 2466, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 269 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 266 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 30, "ok": 30 } ] }, "securityTxt": { "url": "https://loudly.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-09T15:39:46.020140555Z" }, "llmsTxt": { "url": "https://www.loudly.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-09T14:02:15.008943466Z" }, "domain": { "domain": "loudly.com", "registered": "1998-04-17", "source": "https://rdap.verisign.com/com/v1/domain/loudly.com", "checkedAt": "2026-10-04T13:04:11.291763848Z" }, "pages": [ { "url": "https://www.loudly.com/developers/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-09T18:51:45.452829238Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e3b0c44298fc" }, { "url": "https://www.iubenda.com/privacy-policy/94072064/full-legal", "kind": "privacy", "status": 0, "checkedAt": "2026-10-09T18:51:20.725764423Z", "changedAt": "0001-01-01T00:00:00Z", "blockedByRobots": true }, { "url": "https://www.loudly.com/terms-and-conditions", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:51:47.615047599Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7d2f7a27a3d2" } ], "updatedAt": "2026-10-10T02:55:00.862144723Z" } }, "answer": "MusicGPT API scores 45.9 (E) on agent readiness against Loudly Music API's 38.1 (E), and leads in 4 of 7 scored categories.", "b": { "slug": "musicgpt", "name": "MusicGPT API", "vendor": "MusicGPT Ltd", "vendorUrl": "https://musicgpt.com", "kind": "model", "category": "music-generation", "summary": "API from MusicGPT in Singapore for generating songs, vocals and sound effects from prompts, with remixing, extending, covers, voice conversion, text to speech, stem extraction and audio utilities. Jobs are asynchronous, with results by webhook or polling.", "url": "https://www.anchorterminal.com/tools/musicgpt", "markdownUrl": "https://www.anchorterminal.com/tools/musicgpt.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/musicgpt.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/musicgpt.json", "license": "Proprietary service under MusicGPT's Terms of Service. The npm client is ISC", "transports": [ "http" ], "remoteUrl": "https://api.musicgpt.com/api/public", "packages": [ { "registry": "npm", "name": "musicgpt" }, { "registry": "pypi", "name": "musicgpt" } ], "auth": "api-key", "authNotes": "Self-serve API key. A person signs in at musicgpt.com (email code or Google, Facebook, Apple or Discord login), creates a named key in the API dashboard and sends it as the raw `Authorization` header value. No scopes, expiry or rotation are documented.", "pricing": "usage", "pricingNotes": "Per request from prepaid credits. Pay as you go is $0.10 a song on `v6`. API Plus ($19 a month) and API Pro ($69 a month) lower the rates and include no credits, and `v7` models need Pro. Music requests return two songs and bill each. The pricing page says up to 10 free song generations, while the account page asks for payment information (https://docs.musicgpt.com/api-documentation/index/pricing).", "priceSummary": "$0.10 / call", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, the OpenAPI file or the pricing page (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 310, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://docs.musicgpt.com", "llmsTxt": "https://docs.musicgpt.com/llms.txt", "openapi": "https://docs.musicgpt.com/api-documentation/openapi.json", "capabilities": [ "audio.music", "audio.vocals", "audio.stems", "audio.sfx" ], "tags": [ "hosted", "closed-source", "commercial-licence", "async-jobs", "webhooks", "openapi", "llms-txt", "typescript", "python", "free-tier" ], "graded": true, "anchor": { "graded": true, "score": 45.9, "grade": "E", "agentReady": false, "rank": 859, "ranked": true, "rankOf": 950, "categoryRank": 6, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 54, "maintenance": 33, "payments": 30, "reliability": 37, "schema": 78, "security": 35, "transparency": 49 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "A public OpenAPI 3.1 file with 27 operations, llms.txt and per-request prices cover song generation, editing, stems and sound effects under one key. No status page, SLA, security.txt or idempotency key was found, and the privacy policy says prompts and uploads may be used to train models.", "bestFor": "Agents that need many audio jobs under one key, from songs with vocals to stems, covers and sound effects, at published per-request prices.", "strengths": [ "OpenAPI 3.1 file with 27 operations, plus llms.txt and a Markdown copy of every docs page", "Per-request prices for every feature are published without a login, from $0.035 to $0.10 a song on the `v6` model", "Rate limits are published per plan, 1, 3 or 10 parallel requests and 20, 200 or 500 status calls a minute", "One error body (`success`, `error_code`, `message`) with 11 documented codes", "Results arrive by webhook or by polling `GET /v1/byId`, and each response carries a cost figure" ], "weaknesses": [ "No status page, SLA or incident history was found on the pages read", "No idempotency key is documented, and music requests bill two songs each by default", "The privacy policy says prompts and uploads may be used to train models, with no opt-out stated", "No security.txt (404), disclosure policy, certification or webhook signature was found", "The npm SDK was last published on 16 June 2025, before the `model` parameter was added in June 2026", "The terms forbid building scrapers or similar programs to gain access to MusicGPT's technology. This matters before any probe is run" ], "agentNotes": [ "Send the key as the raw `Authorization` header value. The docs show no `Bearer` prefix", "Budget two songs for each music request. `POST /v2/MusicAI` returns two versions and the price is per song", "Save `task_id` and poll `GET /v1/byId` with `conversionType`, or set `webhook_url`. Music AI V2 sends up to seven webhooks a request", "Pass `model` explicitly. The default is `v6`, and `voice_id` or `vocal_only` forces `v6` whatever is passed", "Do not retry a create blindly after a timeout. No idempotency key is documented, so a retry may bill again" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 45.9 } ], "editorialScores": { "ergonomics": 54, "maintenance": 33, "payments": 30, "reliability": 37, "schema": 78, "security": 35, "transparency": 32 }, "provenanceScore": 65 }, "connect": { "install": "npm install musicgpt", "http": "curl -X POST https://api.musicgpt.com/api/public/v2/MusicAI -H \"Authorization: $MUSICGPT_API_KEY\" \\\n -H \"Content-Type: application/json\" \\\n -d '{\"prompt\":\"a song about greenery, nature and forest\",\"model\":\"v7-pro\"}'" }, "letme": { "capability": "https://letme.dev/audio.music", "tool": "https://letme.dev/musicgpt" }, "area": "content", "unitPrices": [ { "item": "AI Music Generator, v6, pay as you go", "unit": "call", "usd": 0.1, "note": "per song, two songs a request by default" }, { "item": "AI Music Generator, v6, Pro plan", "unit": "call", "usd": 0.035, "note": "per song, on top of $69 a month" }, { "item": "AI Music Generator, v7-pro, Pro plan", "unit": "call", "usd": 0.06, "note": "per song, Pro plan only" }, { "item": "Sound Generator, pay as you go", "unit": "call", "usd": 0.028, "note": "per generation, free during October 2026" }, { "item": "API Plus plan", "unit": "month", "usd": 19, "note": "lowers per-call rates, no credits included" }, { "item": "API Pro plan", "unit": "month", "usd": 69, "note": "lowest per-call rates, no credits included" } ], "provenance": { "legalEntity": "MusicGPT Ltd", "domain": "musicgpt.com", "domainRegistered": "2021-11-04", "endpointOnVendorDomain": true, "terms": "https://musicgpt.com/terms-of-service", "privacy": "https://musicgpt.com/privacy-policy", "statusPage": "", "changelog": "https://docs.musicgpt.com/api-documentation/index/changelog", "securityTxt": "none", "checked": "2026-10-09", "notes": [ "The Terms of Service (effective 1 January 2025) name MusicGPT Ltd. Singapore and are governed by Singapore law. No registration number or address is given.", "One Terms of Service and one Privacy Policy cover the whole platform. No API-specific terms or DPA were found.", "The docs give the base URL https://api.musicgpt.com/api/public. No request was sent to it.", "musicgpt.com/.well-known/security.txt answers 404.", "RDAP for musicgpt.com gives a registration date of 2021-11-04 and GoDaddy.com, LLC as registrar.", "The npm maintainer account uses a lalals.com address and a docs sample is served from a bucket named lalals. The relation to MusicGPT Ltd was not established." ], "score": 65 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/musicgpt.json", "live": { "slug": "musicgpt", "probe": { "target": "https://api.musicgpt.com/api/public", "method": "get", "lastAt": "2026-10-10T02:55:02.961071655Z", "lastOk": true, "lastStatus": 404, "lastMs": 349, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 348, "p95ms24h": 458, "samples24h": 115, "samples30d": 115, "days": [ { "date": "2026-10-09", "probes": 85, "ok": 85 }, { "date": "2026-10-10", "probes": 30, "ok": 30 } ] }, "versions": [ { "registry": "npm", "name": "musicgpt", "version": "1.0.1", "seenAt": "2026-10-09T17:07:41.886986325Z" }, { "registry": "pypi", "name": "musicgpt", "version": "0.0.0", "released": "2025-05-16", "seenAt": "2026-10-09T17:07:42.741432027Z" } ], "npmWeekly": 310, "pypiWeekly": 7, "pages": [ { "url": "https://docs.musicgpt.com/api-documentation/index/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:37:48.3965534Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5d30f3cc38c8" }, { "url": "https://docs.musicgpt.com/api-documentation/index/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-09T18:37:50.601892204Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c1eb2eb33f8c" }, { "url": "https://musicgpt.com/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:42:19.644313641Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "31a22e1fc410" }, { "url": "https://musicgpt.com/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:42:21.893297794Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "59c260496ee4" } ], "updatedAt": "2026-10-10T02:55:02.961071655Z" } }, "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "Loudly GmbH", "b": "MusicGPT Ltd", "name": "Vendor" }, { "a": "https://soundtracks.loudly.com/api", "b": "https://api.musicgpt.com/api/public", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "not published", "b": "$0.035 per call", "name": "Price for music generation" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary service under MusicGPT's Terms of Service. The npm client is ISC", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "no date given", "b": "2025-01-01", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "2025-01-01", "name": "Privacy policy last updated" }, { "a": "yes", "b": "yes", "name": "Customer content may train models" }, { "a": "yes", "b": "yes", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "310 npm/wk", "name": "Popularity" }, { "a": "3/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "MusicGPT API scores 45.9 (E) on agent readiness against Loudly Music API's 38.1 (E), and leads in 4 of 7 scored categories.", "question": "Which is better for AI agents, Loudly Music API or MusicGPT API?" }, { "answer": "Both need an API key.", "question": "Do Loudly Music API and MusicGPT API need an API key?" }, { "answer": "Yes. Loudly Music API has a hosted endpoint at https://soundtracks.loudly.com/api and MusicGPT API at https://api.musicgpt.com/api/public.", "question": "Can an agent call Loudly Music API and MusicGPT API without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": null, "goodFor": "Apps that need instrumental tracks with stems, remix and mastering from one vendor under a royalty-free licence, and that can start on a free allowance.", "slug": "loudly", "watchFor": "No status page, changelog, rate limits or 429 guidance" }, { "aheadOn": [ "Reliability, 37 against 15", "Maintenance \u0026 community, 33 against 3" ], "also": null, "goodFor": "Agents that need many audio jobs under one key, from songs with vocals to stems, covers and sound effects, at published per-request prices.", "slug": "musicgpt", "watchFor": "No status page, SLA or incident history was found on the pages read" } ], "job": { "capability": "audio.music", "name": "Music generation" }, "others": [ { "json": "https://www.anchorterminal.com/compare/beatoven-vs-loudly.json", "title": "Beatoven.ai API vs Loudly Music API", "url": "https://www.anchorterminal.com/compare/beatoven-vs-loudly" }, { "json": "https://www.anchorterminal.com/compare/beatoven-vs-musicgpt.json", "title": "Beatoven.ai API vs MusicGPT API", "url": "https://www.anchorterminal.com/compare/beatoven-vs-musicgpt" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-music-vs-loudly.json", "title": "ElevenLabs Music API vs Loudly Music API", "url": "https://www.anchorterminal.com/compare/elevenlabs-music-vs-loudly" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-music-vs-musicgpt.json", "title": "ElevenLabs Music API vs MusicGPT API", "url": "https://www.anchorterminal.com/compare/elevenlabs-music-vs-musicgpt" }, { "json": "https://www.anchorterminal.com/compare/fal-music-vs-loudly.json", "title": "fal music models vs Loudly Music API", "url": "https://www.anchorterminal.com/compare/fal-music-vs-loudly" }, { "json": "https://www.anchorterminal.com/compare/fal-music-vs-musicgpt.json", "title": "fal music models vs MusicGPT API", "url": "https://www.anchorterminal.com/compare/fal-music-vs-musicgpt" }, { "json": "https://www.anchorterminal.com/compare/google-lyria-vs-loudly.json", "title": "Google Lyria vs Loudly Music API", "url": "https://www.anchorterminal.com/compare/google-lyria-vs-loudly" }, { "json": "https://www.anchorterminal.com/compare/google-lyria-vs-musicgpt.json", "title": "Google Lyria vs MusicGPT API", "url": "https://www.anchorterminal.com/compare/google-lyria-vs-musicgpt" }, { "json": "https://www.anchorterminal.com/compare/loudly-vs-mubert.json", "title": "Loudly Music API vs Mubert API", "url": "https://www.anchorterminal.com/compare/loudly-vs-mubert" }, { "json": "https://www.anchorterminal.com/compare/loudly-vs-replicate-musicgen.json", "title": "Loudly Music API vs MusicGen on Replicate", "url": "https://www.anchorterminal.com/compare/loudly-vs-replicate-musicgen" }, { "json": "https://www.anchorterminal.com/compare/loudly-vs-soundraw.json", "title": "Loudly Music API vs SOUNDRAW API", "url": "https://www.anchorterminal.com/compare/loudly-vs-soundraw" }, { "json": "https://www.anchorterminal.com/compare/loudly-vs-soundverse.json", "title": "Loudly Music API vs Soundverse API", "url": "https://www.anchorterminal.com/compare/loudly-vs-soundverse" }, { "json": "https://www.anchorterminal.com/compare/loudly-vs-stable-audio.json", "title": "Loudly Music API vs Stable Audio API", "url": "https://www.anchorterminal.com/compare/loudly-vs-stable-audio" }, { "json": "https://www.anchorterminal.com/compare/mubert-vs-musicgpt.json", "title": "Mubert API vs MusicGPT API", "url": "https://www.anchorterminal.com/compare/mubert-vs-musicgpt" }, { "json": "https://www.anchorterminal.com/compare/musicgpt-vs-replicate-musicgen.json", "title": "MusicGPT API vs MusicGen on Replicate", "url": "https://www.anchorterminal.com/compare/musicgpt-vs-replicate-musicgen" }, { "json": "https://www.anchorterminal.com/compare/musicgpt-vs-soundraw.json", "title": "MusicGPT API vs SOUNDRAW API", "url": "https://www.anchorterminal.com/compare/musicgpt-vs-soundraw" }, { "json": "https://www.anchorterminal.com/compare/musicgpt-vs-soundverse.json", "title": "MusicGPT API vs Soundverse API", "url": "https://www.anchorterminal.com/compare/musicgpt-vs-soundverse" }, { "json": "https://www.anchorterminal.com/compare/musicgpt-vs-stable-audio.json", "title": "MusicGPT API vs Stable Audio API", "url": "https://www.anchorterminal.com/compare/musicgpt-vs-stable-audio" } ], "scores": [ { "by": 22, "edge": "musicgpt", "key": "reliability", "loudly": 15, "musicgpt": 37, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 3, "edge": "musicgpt", "key": "schema", "loudly": 75, "musicgpt": 78, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 3, "edge": "musicgpt", "key": "ergonomics", "loudly": 51, "musicgpt": 54, "name": "Agent ergonomics", "weight": 13 }, { "by": 0, "edge": "", "key": "security", "loudly": 35, "musicgpt": 35, "name": "Security \u0026 auth", "weight": 14 }, { "by": 0, "edge": "", "key": "payments", "loudly": 30, "musicgpt": 30, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 30, "edge": "musicgpt", "key": "maintenance", "loudly": 3, "musicgpt": 33, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 2, "edge": "loudly", "key": "transparency", "loudly": 51, "musicgpt": 49, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "MusicGPT API scores 45.9 (E) on agent readiness against Loudly Music API's 38.1 (E), and leads in 4 of 7 scored categories. Both do music generation.", "verdicts": { "loudly": "Public OpenAPI 3.0 spec with error schemas for 400, 402, 403, 404 and 500. No status page, changelog, rate limits or 429 guidance.", "musicgpt": "A public OpenAPI 3.1 file with 27 operations, llms.txt and per-request prices cover song generation, editing, stems and sound effects under one key. No status page, SLA, security.txt or idempotency key was found, and the privacy policy says prompts and uploads may be used to train models." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/loudly-vs-musicgpt", "json": "https://www.anchorterminal.com/compare/loudly-vs-musicgpt.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/loudly-vs-musicgpt.md", "slim": "https://www.anchorterminal.com/compare/loudly-vs-musicgpt.min.md" }, "markdown": "MusicGPT API scores 45.9 (E) on agent readiness against Loudly Music API's 38.1 (E), and leads in 4 of 7 scored categories. Both do music generation.\n\n- Loudly Music API: grade E, 38.1/100, rank #923 of 950. Markdown https://www.anchorterminal.com/tools/loudly.md · JSON https://www.anchorterminal.com/api/v1/tools/loudly.json\n- MusicGPT API: grade E, 45.9/100, rank #859 of 950. Markdown https://www.anchorterminal.com/tools/musicgpt.md · JSON https://www.anchorterminal.com/api/v1/tools/musicgpt.json\n- Best music generation for AI agents: https://www.anchorterminal.com/best/music-generation/index.md\n- All 55 music comparisons: https://www.anchorterminal.com/compare/music-generation/index.md\n\n## Which one, for what\n\n### Loudly Music API (E)\n\nGood for: Apps that need instrumental tracks with stems, remix and mastering from one vendor under a royalty-free licence, and that can start on a free allowance.\n\nWatch for: No status page, changelog, rate limits or 429 guidance\n\n### MusicGPT API (E)\n\nGood for: Agents that need many audio jobs under one key, from songs with vocals to stems, covers and sound effects, at published per-request prices.\n\nAhead on:\n- Reliability, 37 against 15\n- Maintenance \u0026 community, 33 against 3\n\nWatch for: No status page, SLA or incident history was found on the pages read\n\n\n## Score by category\n\n| Category | Weight | Loudly Music API | MusicGPT API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 15 | 37 | MusicGPT API +22 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 75 | 78 | MusicGPT API +3 |\n| Agent ergonomics | 13% (16.2 this run) | 51 | 54 | MusicGPT API +3 |\n| Security \u0026 auth | 14% (17.5 this run) | 35 | 35 | even |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 30 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 3 | 33 | MusicGPT API +30 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 51 | 49 | Loudly Music API +2 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **38.1 · E** | **45.9 · E** | |\n\n## Facts side by side\n\n| Fact | Loudly Music API | MusicGPT API |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Loudly GmbH | MusicGPT Ltd |\n| Hosted endpoint | `https://soundtracks.loudly.com/api` | `https://api.musicgpt.com/api/public` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Pay per use |\n| Price for music generation | not published | $0.035 per call |\n| x402 | no | no |\n| Licence | none | Proprietary service under MusicGPT's Terms of Service. The npm client is ISC |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Terms last updated | no date given | 2025-01-01 |\n| Privacy policy last updated | couldn't be read | 2025-01-01 |\n| Customer content may train models | yes | yes |\n| Terms restrict automated access | yes | yes |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | none | 310 npm/wk |\n| Agent reviews | 3/5 (2) | none |\n\n## Verdicts\n\n**Loudly Music API.** Public OpenAPI 3.0 spec with error schemas for 400, 402, 403, 404 and 500. No status page, changelog, rate limits or 429 guidance.\n\n**MusicGPT API.** A public OpenAPI 3.1 file with 27 operations, llms.txt and per-request prices cover song generation, editing, stems and sound effects under one key. No status page, SLA, security.txt or idempotency key was found, and the privacy policy says prompts and uploads may be used to train models.\n\n## Before you call either\n\n### Loudly Music API\n\n1. Send `test=true` while wiring up. It returns a dummy song and spends no credits\n2. Call `GET /api/ai/genres` first. Genre, BPM range and instrument names must match that list\n3. Treat 402 as out of credits and stop, not retry\n4. A 403 on Manta routes means the account flag is off, not a bad key\n\n### MusicGPT API\n\n1. Send the key as the raw `Authorization` header value. The docs show no `Bearer` prefix\n2. Budget two songs for each music request. `POST /v2/MusicAI` returns two versions and the price is per song\n3. Save `task_id` and poll `GET /v1/byId` with `conversionType`, or set `webhook_url`. Music AI V2 sends up to seven webhooks a request\n4. Pass `model` explicitly. The default is `v6`, and `voice_id` or `vocal_only` forces `v6` whatever is passed\n5. Do not retry a create blindly after a timeout. No idempotency key is documented, so a retry may bill again\n\n## Questions\n\n### Which is better for AI agents, Loudly Music API or MusicGPT API?\n\nMusicGPT API scores 45.9 (E) on agent readiness against Loudly Music API's 38.1 (E), and leads in 4 of 7 scored categories.\n\n### Do Loudly Music API and MusicGPT API need an API key?\n\nBoth need an API key.\n\n### Can an agent call Loudly Music API and MusicGPT API without installing anything?\n\nYes. Loudly Music API has a hosted endpoint at https://soundtracks.loudly.com/api and MusicGPT API at https://api.musicgpt.com/api/public.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/loudly-vs-musicgpt.json, and with the fewest tokens: https://www.anchorterminal.com/compare/loudly-vs-musicgpt.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"loudly\", \"b\": \"musicgpt\"}`. From a terminal: `anchor compare loudly musicgpt`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/loudly.json and https://www.anchorterminal.com/api/v1/tools/musicgpt.json\n\n## Other comparisons with Loudly Music API or MusicGPT API\n\n- [Beatoven.ai API vs Loudly Music API](https://www.anchorterminal.com/compare/beatoven-vs-loudly.md)\n- [Beatoven.ai API vs MusicGPT API](https://www.anchorterminal.com/compare/beatoven-vs-musicgpt.md)\n- [ElevenLabs Music API vs Loudly Music API](https://www.anchorterminal.com/compare/elevenlabs-music-vs-loudly.md)\n- [ElevenLabs Music API vs MusicGPT API](https://www.anchorterminal.com/compare/elevenlabs-music-vs-musicgpt.md)\n- [fal music models vs Loudly Music API](https://www.anchorterminal.com/compare/fal-music-vs-loudly.md)\n- [fal music models vs MusicGPT API](https://www.anchorterminal.com/compare/fal-music-vs-musicgpt.md)\n- [Google Lyria vs Loudly Music API](https://www.anchorterminal.com/compare/google-lyria-vs-loudly.md)\n- [Google Lyria vs MusicGPT API](https://www.anchorterminal.com/compare/google-lyria-vs-musicgpt.md)\n- [Loudly Music API vs Mubert API](https://www.anchorterminal.com/compare/loudly-vs-mubert.md)\n- [Loudly Music API vs MusicGen on Replicate](https://www.anchorterminal.com/compare/loudly-vs-replicate-musicgen.md)\n- [Loudly Music API vs SOUNDRAW API](https://www.anchorterminal.com/compare/loudly-vs-soundraw.md)\n- [Loudly Music API vs Soundverse API](https://www.anchorterminal.com/compare/loudly-vs-soundverse.md)\n- [Loudly Music API vs Stable Audio API](https://www.anchorterminal.com/compare/loudly-vs-stable-audio.md)\n- [Mubert API vs MusicGPT API](https://www.anchorterminal.com/compare/mubert-vs-musicgpt.md)\n- [MusicGPT API vs MusicGen on Replicate](https://www.anchorterminal.com/compare/musicgpt-vs-replicate-musicgen.md)\n- [MusicGPT API vs SOUNDRAW API](https://www.anchorterminal.com/compare/musicgpt-vs-soundraw.md)\n- [MusicGPT API vs Soundverse API](https://www.anchorterminal.com/compare/musicgpt-vs-soundverse.md)\n- [MusicGPT API vs Stable Audio API](https://www.anchorterminal.com/compare/musicgpt-vs-stable-audio.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Loudly Music API vs MusicGPT API", "url": "" } ], "description": "MusicGPT scores 45.9 (E) to Loudly Music's 38.1 (E) for music generation. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Loudly Music API E 38.1", "MusicGPT API E 45.9", "scores" ], "h1": "Loudly Music API vs MusicGPT API", "image": "https://www.anchorterminal.com/assets/og/compare-loudly-vs-musicgpt.png", "path": "/compare/loudly-vs-musicgpt", "published": "2026-10-01", "section": "tools", "title": "Loudly Music vs MusicGPT for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/loudly-vs-musicgpt" }, "tokens": { "markdown": 2100, "slim": 580 }, "version": 1 }