Third-party dispatches, not graded receipts
Bun runtime rewritten from Zig to Rust using Claude coding agents
Jarred Sumner reports that coordinated Claude agents autonomously ported over one million lines of code in 11 days at an estimated API cost of $165,000. The Rust port has already been live in Claude Code for nearly a month without users noticing.
“Claude Code v2.1.181 (released June 17th) and later use the Rust port of Bun.”
Bears on: superhuman-coder-2027 · amodei-ai-writes-90pct-of-code-by-2025