AI mixing tools compared: Mixroadie, iZotope, LANDR, RoEx
How the AI mixing tools compare, from Mixroadie and Phantom to iZotope, LANDR, RoEx Automix, Cryo Mix, MixingGPT and sonible, and which one to pick for your situation.
COMPARISON 4 min read
Updated
Most tools sold as “AI mixing” do one of four things. Some master a finished stereo file. Some are plugins you put on individual tracks. Some mix stems you export. Some answer questions and leave the changes to you. Mixroadie works on the whole multitrack project inside your DAW, and it asks before changing anything.
We make Mixroadie, so we have a side here. We’ve tried to be fair to the others, and we say where one of them is the better pick. Here is how the common tools compare. We checked the competitor details in September 2026. If something is out of date, tell us and we’ll fix it.
| Works on | Where the audio goes | Result | |
|---|---|---|---|
| Mixroadie | Your REAPER project | Stays on your computer | Moves in your session, with stock plugins you can edit |
| Phantom | Your REAPER or Live session, through an AI assistant you connect | Analysis stays on your computer; measurements go to that assistant | Changes the assistant makes in your session |
| iZotope Ozone / Neutron | One plugin instance at a time, in almost any DAW | Stays on your computer | Plugin settings |
| LANDR, eMastered, BandLab | A finished stereo mix | Uploaded (LANDR also has a local plugin) | A mastered file |
| RoEx Automix | Stems you export | Stays on your computer with Automix Desktop, uploaded with the web version | Mixed stems, a master, or a project for Live, Bitwig or Studio |
| Cryo Mix | Up to 32 stems, in the browser | Into its online studio | A mixed and mastered file |
| MixingGPT | Your questions, in almost any DAW | Only stems you choose to share for feedback | Advice. You make the changes |
| sonible smart: plugins | One track per plugin | Stays on your computer | Plugin settings |
| A mix engineer | Your stems | Sent to a person | A mix made by someone with ears and experience |
Phantom
Phantom is the closest to Mixroadie: free, open-source analysis tools that let Claude or another AI assistant work in your REAPER or Live session. It suits people who already use AI coding tools, and it runs on Linux. Mixroadie needs no AI setup, shows a plan you approve, backs up the project first, and runs on Windows too. Full comparison.
iZotope Ozone and Neutron
These are plugins. Their assistants listen and suggest a starting chain, and they run in almost every DAW. Ozone has much more mastering depth than Mixroadie. Mixroadie plans across all the tracks at once, and it adds timing, tuning, click repair and phase checks. Full comparison.
LANDR and other online mastering
These services master a stereo file, which means they can’t fix a vocal that’s buried in the mix. Mixroadie works on the tracks first and then masters, and nothing gets uploaded. Full comparison.
RoEx Automix and Cryo Mix
Both mix exported stems automatically. RoEx’s desktop app now does this on your own computer, and Cryo Mix runs in the browser with a chat assistant. Mixroadie edits the project you’re already working in and shows each move before it happens. Full comparison.
MixingGPT
A chat assistant that runs as a plugin in almost any DAW. It explains what to change, and you make the changes yourself. Mixroadie makes the changes for you once you approve them, but only in REAPER.
sonible smart:EQ, smart:comp and friends
These are good single-track plugins that learn a setting from the audio you feed them. They make no decisions about the mix as a whole, like where the bass sits against the kick. Mixroadie does, but it uses plainer tools: your DAW’s stock EQ and compressor.
Hiring a mix engineer
A good engineer makes taste calls that no measurement can make. If the song matters and you can pay for it, hire one. Mixroadie is for the songs you can’t send out, for the first pass before you send a song out, or for finding out why a mix sounds wrong.
Which one to pick
- Your mix is done and only needs to be louder: BandLab Mastering for free, LANDR if you like its sound.
- You use Logic, Pro Tools or Cubase: iZotope Neutron and Ozone, or sonible’s smart: plugins.
- You want a finished mix without being involved: RoEx Automix, or Cryo Mix in the browser.
- You mix in REAPER and want to see and approve every change: Mixroadie.
- You’re comfortable in a terminal and want something free: Phantom.
- The song matters and you can pay for it: a mix engineer.
- You want to learn why, not get a result: MixingGPT or another chat assistant, plus a good meter.
Whichever you try, test it on a song you know well and compare the result with your own mix at the same loudness. A louder version always sounds better at first, and that’s how a lot of these tools end up judged.