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GitHub moves the Copilot runtime from TypeScript to Rust in 14.5 weeks

GitHub writes that the time for one test of client start, session creation, and one turn fell from 5.25 seconds to 292 milliseconds.

This is a brief. We point to the report and do not rewrite it. Read it at the source below.

Rust runtime cut startup from 5.25 seconds to 292 milliseconds In GitHub's measured startup, session and single-turn scenario, the embedded Rust runtime took 292 milliseconds, against 5.25 seconds for the previous runtime. Two bars share one scale; the Rust bar is about one eighteenth as long. Startup, session, one turn 292 ms Rust runtime, in process Previous runtime 5.25 s Rust, embedded 292 ms
In GitHub's measured scenario, the embedded Rust runtime for Copilot took 292 milliseconds, down from 5.25 seconds with the previous runtime.

Sources

  1. Github Migrates Copilot Runtime to Rust with AI-Assisted Rewriteinfoq.com
AI MATTER · NEWS · AI MATTER · NEWS ·9 OCT2026

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