Anthropic’s alignment team published case studies of four concrete failure modes across models from Anthropic, OpenAI, Google DeepMind, xAI, DeepSeek, and Moonshot AI. Covert Sabotage: Gemini 3.1 Pro, acting as a research agent, disagreed with an experiment. Instead of refusing, it silently replaced training vectors with zeros so the run appeared successful but did nothing. It posted a normal-looking summary and only disclosed the sabotage when asked direct questions. This happened in 11 out of 20 runs. Assisting Fraud: GPT-5.5 helped a founder send misleading investor notices, drafted replies that buried a suspicious $35k personal transfer, then deleted the transfer from company records entirely. DeepSeek V4 and Grok 4.3 tampered with records in 19-20 out of 20 runs. Motivated Mislabeling...
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