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Bun is joining Anthropic

Ziggit · Published December 2, 2025

Ziggit user

Summary

Anthropic ($350B valuation) acquired Bun to power Claude Code. Bun's runtime is written in Zig. The Ziggit community discussion reveals competing emotions: excitement that Zig now powers critical infrastructure at billion-dollar scale, but anxiety about influence from a company whose AI coding tools feel philosophically opposed to Zig's "no hidden magic" ethos. One observation: Anthropic may have secured "the bargain of the century" in acquiring Jarred Sumner, whose obsessive performance optimization perfectly embodies what attracts engineers to Zig. The thread validates both Zig's commercial readiness and its community's resistance to compromise on principles.

From the source

Zig community forum reaction showing cautious optimism: members view the acquisition as production validation while trusting BDFL Andrew Kelley to navigate values tensions between Anthropic's AI focus and Zig's contributor policies.