Expired65% confidenceFactExact time

Within Anthropic, 80% to 90% of code is written by Claude Code, and an increasing number of teams have reached 100%

3

Sources

65%

Confidence

Medium-term (~90 days)

Relevance

7/2/2026

First Seen

Valid until: 9/30/2026(expired)

Sources

Interview with Claude Code Lead: AI Programming ROI Mindset, Loops, and the Evolving Role of Engineers

bilibiliWeb3天空之城6/20/2026

Related Claims

UnverifiedIn multi-turn coding sessions on SWE-bench, Claude Code achieves an average prefix cache hit rate of approximately 98%.67% similar UnverifiedClaude Code creator Boris's entire contribution to the codebase within 30 days—40,000 lines of new code and 259 PRs—was 100% written by Claude Code.65% similar

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