Google says Gemini 4 Argon agents have already freed over 300 TiB of memory across its data centers, with a 1 million token output limit and agents already optimizing its own infrastructure. The agents analyzed profiling data, found memory optimizations and applied changes that were subsequently rolled out. Argon agents are also working on C/C++ to Rust migrations reaching 800,000+ lines of kernel code, with extensive audits and testing before deployment. For its video decoder, Google says agents replaced 32,000 lines of SIMD code with safe Rust, making the existing Rust port 2.7x faster while preserving identical video output. These are expensive engineering tasks inside infrastructure Google already operates. This release seems to be a much bigger deal than people think!