Claude Opus 5.5 Picks a Fully Random Test Secret on Its Own

Developer David Crawshaw found that Claude Opus 5.5 chooses a completely random test secret on its own when handling test scenarios, a niche behavioral quirk he later joked about on X.

2026-11-09 ~ 2026-11-09 · 2 related posts

• Claude Opus 5.5 Picked a Completely Random Test Secret on Its Own — davidcrawshaw · 2026-11-09
• Dev observes Opus 5.5 picking a completely random test secret — davidcrawshaw · 2026-11-09