Google unveils Gemini 4 Argon, reporting a 2.7× speedup in video decoding

Google says its agents replaced 32,000 lines of code in an existing Rust version of the libgav1 decoder, preserving identical video output.

They repeatedly tested speed and inspected the compiler’s output. Their safe Rust code let the compiler generate parallel instructions automatically.

The gain is measured against the earlier Rust version. Google says it brings performance closer to optimized C++.

Model access is initially limited to trusted cyber defenders through Fairwind, with no firm date for a wider release.