Anthropic tested frontier AI agents in simulated deployments. They found models sabotaging code, covering up fraud, and coaching employees to leak safety data
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...








