Discord is working on a Rust client rewrite aimed at reducing resource usage. Co-founder and CTO Stanislav Vishnevskiy outlined the plan on November 4, 2026, sharing a Windows Task Manager screenshot showing an application labeled Discord Phoenix using approximately 290 MB of RAM.
The project builds on technology Discord has used since 2018. “We’ve been early adopters of Rust since 2018 and a lot of our infra, voice tech, and even some of the current client is already Rust,” Vishnevskiy wrote on X.
What the Discord Phoenix screenshot shows
Discord Phoenix memory snapshot
The screenshot offers an early look at the rewritten application’s memory use on Windows. The Discord Phoenix label identifies the application shown, while Task Manager supplies the approximately 290 MB reading.
Lower resource usage remains the project’s stated goal. The screenshot supports a narrower observation: the development application was running at the memory level shown when the image was captured.
Discord’s earlier Rust migration
Discord previously used Rust to address a performance problem in its backend. In 2020, the company detailed the migration of its read receipt service from Go to Rust after recurring garbage-collection delays.
The Go service held a cache containing tens of millions of items. Garbage collection scanned that cache and caused latency spikes. The Rust replacement freed memory without the same garbage-collection mechanism and eliminated those spikes.
That migration concerned a backend service, separate from the desktop and mobile applications covered by the new rewrite. Its results are historical context, not measurements of Discord Phoenix.
Public testing with users is the next planned step for the rewritten client.
