Zig’s creator Andrew Kelley publicly criticized Anthropic’s decision to rewrite Bun from Zig to Rust, calling the move a marketing stunt rather than a technical necessity. Anthropic, backed by $132 billion in investment and eyeing a $1 trillion IPO, argued memory bugs in Zig forced the switch, while Kelley attributes the shift to corporate hype around Anthropic’s new AI model. The controversy highlights the tension between Rust’s safety guarantees and Zig’s performance promise.

Kelley’s blunt remarks sparked debate in the community, with some labeling his comments a “meltdown” and others praising his candor. The situation underscores how high‑profile AI firms can shape perceptions of programming languages, influencing architecture, product, and staffing decisions.

Ultimately, the debate centers on whether the rewrite was driven by genuine technical challenges or simply a strategic PR move. The incident serves as a cautionary tale for developers evaluating language choices amid corporate narratives.