Is AI Mastering free, and what do I get with the free plan?

Yes. AI Mastering lists a Free Plan at $0 per month that includes unlimited mastering. That makes it usable as a no-cost way to master tracks, and the site's own framing ("Free Mastering is Available") supports trying it before committing to anything paid.

What the free plan includes

Based on the site's stated plan details:

The important practical point is that "unlimited" applies to mastering runs, not to a limited trial count. If your workflow involves mastering many tracks or repeated revisions, the free plan does not impose a per-track cap according to the available information.

What you can actually do with it

The service is built around a drag-and-drop interface, so the intended workflow is simple: upload a track, let the AI process it, and download the result. The features the site highlights are:

• Target loudness customization — you set the loudness goal rather than accepting a fixed output.
• Mastering level customization — how aggressively the AI processes the track is adjustable.
• Output format customization — you choose the delivered file format.
• Spectrum analysis — visual feedback on the frequency content.
• Loudness analysis — feedback on loudness, useful for checking whether you hit your target.

Loudness and dynamic range are handled by a limiter, which the site describes as the tool for balancing the two. In practice this is the part most users care about: pushing a track louder without flattening its dynamics is the classic mastering trade-off, and the limiter plus the loudness/dynamic range controls are where you manage it.

Who the free plan fits

The free plan is a reasonable fit if:

• You are an independent musician or producer working with a limited budget.
• You want to hear how AI mastering changes your mix before deciding whether to rely on it.
• You master occasionally rather than as a high-volume service.
• You want loudness and dynamic range control without buying or learning a full mastering suite.

It is less clearly suited to situations the site does not address — for example, whether there are file size limits, format restrictions on input, or differences between free and paid tiers beyond price. The available information only states the free plan's price and unlimited mastering, so treat anything beyond that as unconfirmed.

Adoption signals worth noting

The site reports, combined with bakuage.com:

• 2,700+ total users
• 50+ active users per day
• 3,600+ masterings per month

These are the service's own statistics, so read them as self-reported scale rather than independent verification. They do suggest the tool is in active use rather than abandoned.

How to decide

If your question is simply "can I use this without paying," the answer from the site is yes — $0/month with unlimited mastering. The sensible next step is to run one of your own tracks through it and compare the result against your original, paying attention to whether the loudness gain costs you dynamic range. That single test will tell you more about fit than any feature list, and it costs nothing under the stated free plan.