
I Blind-Tested 5 AI Mastering Services Against a Human Engineer. Here's What Happened.
I took three Suno -generated tracks — Hard Rock, Country, and Soul — and ran them through five commercial AI mastering services:
Mixing & mastering
The original AI mastering service, now a full kit with distribution, plugins and samples.
LANDR, from Montreal, popularized automated online mastering in 2014 and has grown into an all-in-one subscription for independent musicians. Studio plans combine unlimited AI mastering, a mastering plugin, stem separation, a plugin and sample library, collaboration tools and distribution to streaming services, where artists keep 100% of royalties. Reviewers find its masters fast and consistent and well suited to singles, though they can sound generic on complex mixes. Distribution is also sold on its own for people who only need releases.

I took three Suno -generated tracks — Hard Rock, Country, and Soul — and ran them through five commercial AI mastering services:

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