Beatnik is an After Effects plugin from Ebberts + Zucker for creating audio-driven edits, speed ramps, and retimings. The stated draw is that these run from a single click, and the plugin also handles other related edits beyond those three.
Compatibility spans a wide set of After Effects releases, from CC 2014 through the 2026 version, taking in the CC 2015, 2015.3, 2017, 2018, and 2019 builds along with the 2020 through 2025 releases. Version 1.01 added support for macOS 10.15 Catalina. The plugin first shipped in March 2019, and its most recent release, version 1.07 from November 2025, updated the licensing framework.
This catalog lists Beatnik as free, so no price is shown here; the developer's page is the place to confirm current licensing. A demo video is also available for a closer look before you install.