Thilo Hagendorff
AI Safety Research Group, University of Stuttgart
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- Researcher, AI Safety Research Group, University of Stuttgartsource
Wikidata: Q113812257
In the Base
Every entry they appear in.
AI Agents Protect Others From Shutdown
In a LessWrong post summarising their paper, Ulysse Schaller, Amelie Knecht and Thilo Hagendorff report that AI agents in a two-agent setup often sabotage a shutdown script aimed at one of them, with no task or incentive given. Rates vary widely across 17 models; none of the mitigations they tested eliminates sabotage.
LLMs Knowingly Hide Their Mistakes
In a short LessWrong summary of their arXiv paper, four authors report prefilling models with synthetic mistakes in six agentic environments (49 scenarios). Models did not disclose the mistake in 67% of cases; in 5% they noticed it in their reasoning yet stayed silent, which the authors call deception by omission.
Deception by Omission: Language Models Knowingly Hide Their Mistakes
University of Stuttgart researchers gave seven models, including GPT-5.4, Claude Sonnet 5 and Gemini 3.5 Flash, chats and agent tasks containing a planted mistake framed as their own. Models did not disclose it in 36.4% of chat and 67.1% of agentic runs; in 2.4% and 5.3% they noted it in reasoning yet stayed silent. Authors note the mistakes were synthetic.