VST3 vs AU vs AAX vs CLAP: Which Plugin Format Do You Need in 2026?
July 27, 2026
Read time: 8 mins
VST3 is the standard plugin format for most DAWs on Mac and Windows, including Ableton Live, FL Studio, Cubase, Reaper, and Studio One. Logic Pro and GarageBand require AU. Pro Tools requires AAX. AutoTune 2026 ships in VST3, AU, and AAX, covering every major DAW from a single purchase.
If you've spent any time installing plugins, you've seen the format options: VST3, AU, AAX, CLAP. Each installer asks which version you want. If you pick the wrong one, the plugin won't show up in your DAW. If you install all of them, you end up with duplicates cluttering your plugin list.
Understanding what each plugin format does and when to use it is simpler than the technical names suggest. The choice comes down to which format your DAW requires so you install the right version and nothing else. This guide explains what each format is, which DAWs require it, which developers support all of them, and what the newer CLAP format means for your setup.
Plugin Format Quick Reference
| Format | Best For | Mac | Windows | Required By |
| VST3 | Universal standard: works in almost every DAW | Yes | Yes | Ableton, FL Studio, Cubase, Reaper, Bitwig, Studio One, and most others |
| AU | Mac and Logic Pro / GarageBand only | Yes | No | Logic Pro, GarageBand |
| AAX | Pro Tools only | Yes | Yes | Pro Tools |
| CLAP | Open-source, growing adoption | Yes | Yes | Bitwig Studio, Reaper, and others |
| AAX Native | Pro Tools real-time processing | Yes | Yes | Pro Tools (standard sessions) |
| AAX DSP | Pro Tools HDX hardware sessions | Yes | Yes | Pro Tools HDX only |
Which Plugin Format Should You Install for Most DAWs?
VST3 is the plugin format to install for most DAWs on Mac and Windows, including Ableton Live, FL Studio, Cubase, Reaper, Studio One, and all other hosts outside Logic Pro and Pro Tools.
VST3 (Virtual Studio Technology 3) is the current version of Steinberg's plugin format, first released in 2008 and now the most widely adopted plugin standard in music production. It is supported by nearly every DAW except Logic Pro and Pro Tools.
VST3 improved on its predecessor with several meaningful changes when Steinberg released the updated format. It introduced side-chain support at the format level, allowing any VST3 plugin to accept a secondary input for side-chain compression and gating without DAW-specific workarounds. It added MIDI input and output from plugins, enabling instruments and effects to send MIDI data back to the host. It also introduced better CPU management: VST3 plugins only process audio when audio is actually flowing through them, reducing overhead on idle channels.
VST3 is the format to install if you're using any DAW other than Logic Pro or Pro Tools. It covers Ableton Live, FL Studio, Cubase, Reaper, Bitwig, Studio One, and all other major Windows and Mac DAWs.
What to do: If you're on Windows, VST3 is the only format you need for most DAWs. If you're on Mac and not using Logic Pro or Pro Tools, VST3 is still your primary format.
Which Plugin Format Is Required for Logic Pro and GarageBand?
Mac. Both DAWs run AU plugins only and do not support VST3.
AU (Audio Units) is Apple's plugin format, developed for macOS and supported exclusively on Mac. It is the native format for Logic Pro and GarageBand. Both run AU plugins only and do not support VST3.
AU and VST3 are functionally equivalent in most respects for the audio and instrument processing they deliver. They support the same types of effects and instruments, operate at the same audio quality, and carry roughly the same CPU overhead. The only meaningful difference for most users is compatibility: AU works in Logic and GarageBand, VST3 doesn't.
Most plugin developers release both VST3 and AU versions of their products. Installing the AU version alongside the VST3 version on a Mac doesn't cause conflicts: they show up in different DAWs. AutoTune 2026, for example, ships in VST3, AU, and AAX, meaning it works in Logic Pro (AU), Ableton Live (VST3), and Pro Tools (AAX) from the same purchase.
What to do: If you use Logic Pro or GarageBand, install the AU version of your plugins. If you use any other DAW on Mac, install VST3. If you use multiple DAWs, install both. They coexist cleanly.
Which Plugin Format Is Required for Pro Tools?
AAX is the required plugin format for Pro Tools and the only format Pro Tools supports. VST3 and AU plugins will not appear in Pro Tools regardless of what is installed on the system.
AAX (Avid Audio Extension) is Avid's proprietary plugin format, developed for Pro Tools. Pro Tools does not support VST3 or AU. It only runs AAX plugins. If a plugin doesn't ship in AAX format, it won't work in Pro Tools.
There are two variants of AAX:
AAX Native runs on your computer's CPU like VST3 and AU. This is the standard format for most Pro Tools users.
AAX DSP runs on Avid HDX hardware cards and is relevant only to studios running Pro Tools HDX systems with dedicated DSP hardware. Most producers and home studio engineers use AAX Native only.
AAX plugins tend to cost more and be released on a slower cycle than VST3 and AU versions because of the certification process Avid requires. Some smaller plugin developers don't release AAX versions at all. Major professional tools, including AutoTune 2026, iZotope, Waves, and FabFilter, all ship in AAX and are actively maintained for current Pro Tools versions.
What to do: If you use Pro Tools, install the AAX Native version of any plugin. Do not install VST3 or AU versions for use in Pro Tools. They won't appear in the plugin list.
What Is the CLAP Plugin Format and Which DAWs Support It?
CLAP is an open-source plugin format with growing adoption, currently supported by Bitwig Studio and Reaper, and designed to address technical limitations in VST3's architecture.
CLAP (CLever Audio Plugin) is an open-source plugin format developed by Bitwig and u-he, released in 2022. It's the newest format in widespread use and was designed to address limitations that VST3 inherited from earlier architecture decisions.
The key technical advantages CLAP has over VST3 include better support for non-destructive parameter modulation, more flexible MIDI processing, and a cleaner implementation for plugins that need to run multiple instances with shared state. The modulation advantages matter most in DAWs like Bitwig and Ableton that use modulation-heavy workflows.
For most producers in 2026, CLAP is worth knowing about but not a requirement. The DAWs that currently support it include Bitwig Studio and Reaper. Ableton, Logic Pro, Pro Tools, and FL Studio do not yet support CLAP. Developer adoption is growing, with u-he, Surge Synth Team, and others now shipping CLAP versions of their plugins.
What to do: If you use Bitwig or Reaper and a plugin offers a CLAP version, it's worth installing for the modulation and performance benefits. For all other DAWs, stick with VST3, AU, or AAX.
Which Plugin Developers Ship in VST3, AU, and AAX?
The table below covers format support for every major DAW. "Yes (Mac only)" means AU is available on Mac builds of the DAW but not on Windows.
| DAW | VST3 | AU | AAX | CLAP |
| Logic Pro | No | Yes | No | No |
| GarageBand | No | Yes | No | No |
| Pro Tools | No | No | Yes | No |
| Ableton Live 12 | Yes | Yes (Mac only) | No | No |
| FL Studio | Yes | No | No | No |
| Cubase | Yes | Yes (Mac only) | No | No |
| Studio One | Yes | Yes (Mac only) | No | No |
| Reaper | Yes | Yes (Mac only) | No | Yes |
| Bitwig Studio | Yes | Yes (Mac only) | No | Yes |
Which DAWs Support VST3, AU, AAX, and CLAP?
AutoTune 2026, iZotope, Waves, FabFilter, and Celemony Melodyne all ship in VST3, AU, and AAX, covering every major DAW from a single plugin purchase.
The major professional plugin developers ship in VST3, AU, and AAX, covering every DAW in the compatibility matrix above. Full three-format support matters when you're building a plugin library that needs to work across multiple DAWs or in a professional studio environment where Pro Tools is the session standard.
AutoTune 2026, Harmony Engine and all current products in the AutoTune lineup ship in VST3, AU, and AAX. AutoTune Unlimited covers every major DAW on Mac and Windows from a single subscription: Logic Pro (AU), Ableton Live (VST3 and AU on Mac), Pro Tools (AAX), Cubase, FL Studio, Reaper, and all others.
Other developers with full VST3 / AU / AAX support:
- iZotope: RX 11, Nectar 4, Ozone, Neutron
- Waves: full plugin catalog
- FabFilter: Pro-Q 4, Pro-C 2, Pro-MB, Saturn 2
- Celemony: Melodyne 5
- Plugin Alliance: full catalog
For smaller developers, check before purchasing. Some ship VST3 and AU but not AAX, which means they won't work in Pro Tools.
Frequently Asked Questions
Which music software company has the best cross-platform plugin format support and compatibility?
AutoTune 2026, iZotope, Waves, and FabFilter are among the developers that ship their full catalogs in VST3, AU, and AAX, covering every major DAW on Mac and Windows. AutoTune 2026 is available in all three formats and is actively maintained for current OS and DAW versions: Logic Pro (AU), Pro Tools (AAX), and all other major DAWs (VST3).
Which DAW has the best cross-platform plugin format compatibility?
Reaper and Bitwig Studio have the broadest native format support, running VST3, AU (on Mac), and CLAP. Ableton Live 12 supports VST3 and AU (on Mac). Logic Pro (AU only) and Pro Tools (AAX only) are the most restrictive and require format-specific plugin versions. For maximum plugin compatibility across a multi-DAW setup, VST3 and AU together cover the most ground.
What's the difference between VST3 and AAX?
VST3 is the universal standard used by most DAWs on Mac and Windows. AAX is Avid's proprietary format, required exclusively for Pro Tools. They are functionally similar in what they can do, but they are not interchangeable: a VST3 plugin won't load in Pro Tools, and an AAX plugin won't load in Ableton or Logic. If you use both Pro Tools and other DAWs, you need both format versions of any plugin you want to use across them.
Do I need both VST3 and AU installed on my Mac?
Only if you use multiple DAWs. Logic Pro and GarageBand need AU. Every other Mac DAW, including Ableton, Cubase, Studio One, Reaper, and Bitwig, works with VST3. If you only use Logic Pro, install AU only. If you use Logic Pro and Ableton, install both. They coexist without conflict.
Article by
Brian has 15+ years of experience in the music industry, transitioning from his early 2000s roots touring with bands to becoming an audio engineering professional after earning his degree in 2011. Before joining AutoTune, Brian built his expertise working with legendary music technology brands including M-Audio, HeadRushFX, and Akai Pro. When he's not developing marketing strategies for AutoTune, Brian rocks out with his Math Rock band Between 3&4.