{"slug":"ace-step","name":"ACE-Step","domain":"ace-step.github.io","verdict":"As of 2026-07-13, ChatGPT, Claude, Gemini, Grok collectively rank ACE-Step #9 of 10 for ai music generation api. Source: https://modelsagree.com/product/ace-step (modelsagree.com, CC BY 4.0).","best_rank":9,"categories":1,"entries":[{"slug":"best-ai-music-generation-api","title":"Best AI music generation API","rank":9,"of":10,"score":1,"appearances":1,"modelRanks":{"Claude":5},"reason":"The best open-source option: Apache-2.0 full-song generation with vocals, fast enough to run on a single consumer/prosumer GPU, self-hostable behind your own API with zero marginal cost and full data control; rank assumes the practitioner can operate GPU infrastructure.","reasons":[{"model":"Claude","reason":"The best open-source option: Apache-2.0 full-song generation with vocals, fast enough to run on a single consumer/prosumer GPU, self-hostable behind your own API with zero marginal cost and full data control; rank assumes the practitioner can operate GPU infrastructure."}],"fixes":[{"model":"Claude","fix":"Quality and lyric adherence sit clearly below the commercial leaders, and you inherit all serving, scaling, and safety work yourself."}],"updated":"2026-07-13","api":"https://modelsagree.com/api/v1/best/best-ai-music-generation-api.json"}],"page":"https://modelsagree.com/product/ace-step","check":"https://modelsagree.com/check?q=ACE-Step","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}