Two tools, one set of free-tier fields, verdict first. Comparisons use only the inputs that the official pages showed on the check date. Guides explain how to read a free tier before you generate anything.
AIVA vs Mubert on free downloads, the card statement, track length and paid formats. Both make instrumental music. Formula result: AIVA 76.7, Mubert 75.0, a gap of 1.7 points.
A pre-generation checklist for free AI song tools: where to find the card rule, the commercial limit, the export format and the watermark statement, and what to do when a page says nothing.
Stable Audio's free plan is personal and non-commercial, with 50 credits a month. Mubert's free plan is non-commercial with 25 tracks. Here is what each pricing page states.
Both free plans start with 50 credits, but Suno refills daily and Stable Audio refills monthly. Both free plans are non-commercial. Here is what each pricing page states, as checked on 2026-10-16.
How to read the free tier of an AI song generator: the allowance unit, card rules, commercial limits, track length and export formats, with examples from tools checked on 2026-10-16.