Anthropic Acquires Bun To Power Claude Code
Anthropic acquired Bun, the developer of the Bun JavaScript runtime that Anthropic adopted for Claude Code in July, the companies announced. In November 2025, Anthropic reported Claude Code reached a $1 billion annual run-rate revenue six months after public launch, while Anthropic's overall run-rate rose from $1 billion in January 2025 to $7 billion by October; Anthropic says it will integrate Bun into Claude Code, Agent SDK, and future AI coding products.
Key Points
- 1Reports Claude Code reaches $1 billion annual run-rate revenue six months after public launch in November.
- 2Highlights Anthropic's rapid revenue growth to $7 billion run-rate by October 2025, signaling strong product-market fit.
- 3Encourages developers and startups to adopt Bun for AI coding stacks as Anthropic integrates it into tooling.
Scoring Rationale
Strong official revenue figures and strategic acquisition indicate major commercial momentum, limited by focused developer-tooling impact.
Sources
Public references used for this report.
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