Suno Pro costs $10/month for 500 songs. Hit your limit on day 12, and you wait until the billing cycle resets. Udio charges $30/month with credit walls that kick in during peak hours.
ACE-Step takes a different route entirely. It's an open-source model (Apache 2.0) that you can call through an API and pay per track. Through deAPI, a 3-minute track costs $0.002 on the fastest variant - and every output is yours commercially.
This guide covers how to prompt ACE-Step, what each model variant is good at, and includes copy-paste Python code to generate your first track.
What Makes ACE-Step Different
Suno's Custom Mode and Udio both offer style tags, lyrics with structure markers, and post-generation editing. They're capable tools for making music in a browser.
