ACE-Step API vs CAVN AI

ACE-Step API has no write-up on Specifiction yet; its figures are above.

CAVN AI is a music creation platform for generating songs, cloning voices, producing music videos, and refining tracks. Song generation accepts text, image, or video input. Production tools include stem separation, mastering, MIDI export, audio enhancement, and 12-track editing with local adjustments. Its video generator supports lip-sync and videos up to 10 minutes long at up to 4K resolution. Users can clone or replace voices and create an AI singer or virtual artist. The platform integrates Smodel, Mureka, Minimax, Ace Step, and its own CAVN model. Its API documents prompt-based song generation, result queries, stem splitting, and audio-to-MIDI tools, with agent integrations aimed at MCP, OpenClaw, WorkBuddy, Hermes-style memory agents, and enterprise automation. The Free plan costs nothing and includes 10 daily renewing credits, about four songs, and two concurrent generations. Free output is for lawful personal, non-commercial use with attribution, and generated songs are public by default. Basic costs $10 a month, billed annually at $120/year; Standard costs $30 a month, billed annually at $360/year. Paid subscribers receive commercial-use rights subject to the terms.