Expired70% confidenceFactTime unknown
Claude Code is 100% written by Claude Code itself, and Cowork is 100% written by Claude Code.
4
Sources
70%
Confidence
Medium-term (~90 days)
Relevance
5/31/2026
First Seen
Valid until: 8/29/2026(expired)
Sources
Related Entities
Related Claims
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.80% similarUnverifiedIn a Y Combinator talk, approximately half of the founders stated that 100% of their code was written using Claude Code.75% similarPartially VerifiedWithin Anthropic, 80% to 90% of code is written by Claude Code, and an increasing number of teams have reached 100%73% similarUnverifiedThe Claude Code team believes that integration capabilities are critical to Claude Code's success.72% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/5692API
curl https://kongchang.com/api/v1/knowledge/claims/5692MCP
get_claim(id=5692)