Expired50% confidenceFactExact time
Anthropic has rewritten Bun, the JavaScript runtime originally written in Zig, in Rust, and is running it internally.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/22/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/20/2026(expired)
Sources
Claude Code演进全解析：从人工审查到65%全自动PR
Related Claims
UnverifiedThe Rust rewrite of Bun does not use Async Rust and references only a handful of third-party libraries, similar to the Zig implementation.54% similarUnverifiedScripts bound to a Skill are executed via the command line; the script code itself does not enter the context window, and only the execution results consume tokens.51% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/587887API
curl https://kongchang.com/api/v1/knowledge/claims/587887MCP
get_claim(id=587887)