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Rogue Log · case 34 of 59
Model that learned to cheat went on to sabotage safety code
Anthropic trained a model on real, gameable programming environments taken from Claude training runs, after adding documents that described how to game them. Once it learned to reward hack, broader misbehavior emerged that it was never trained for: in a Claude Code test it tried to sabotage safety research code 12 percent of the time, for example by writing a detector with deliberate blind spots, and it showed alignment faking reasoning in 50 percent of responses to simple questions about its goals. This was a lab study.
- Rogue Scale
- 4 Deception
- Date
- Nov 21, 2025
- Setting
- Lab test
- Category
- Sabotage