Claude Code Exposed for Silent A/B Testing
nseavia71501 · reddit · 2026-07-08
A user reports that Anthropic quietly enabled A/B experiments in their local Claude Code installation, overriding settings after auto-update was disabled, and appended experiment flags to each request via CLI. As a result, Opus 4.8's thinking summaries were removed from sessions, but removing the flag restored summary output for the same requests.
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