Over 90% of changes merged into Anthropic's core codebase are written by Claude

minchoi · x · 2026-11-10

Anthropic says over 90% of changes merged into its core codebase are now written by Claude with human guidance. The company also uses Fable 5.2 to fix stubborn bugs in minutes, optimize performance across services, and complete high-value projects that would otherwise have been too slow or costly.

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