Claude Code's system prompt grew 19.7% in one day, changelog tracker shows
ClaudeCodeLog · x · 2026-09-04
Additional details on Claude Code 2.1.260: new model O1-c.R.4-, removal of env vars like AWSPROFILE, released just one day after 2.1.259. Prompt tokens jumped 5,420 (+19.7%), with the system share rising from 65.7% to 71.3% while tools fell to 28.7% — suggesting the system prompt is expanding rapidly. Data from the open-source marckrenn/claude-code-changelog tracker.
Related event: Claude Code 2.1.260 Ships 66 Changes Including Full-Screen Diff Panel(3 posts)→
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