OrcaRouter
An arXiv preprint titled "The Yes-Man Syndrome: Benchmarking Abstention in Embodied Robotic Agents" (published May 19, 2026) directly evaluates Gemini Robotics ER 1.6 Preview as an embodied planner. The authors introduce RoboAbstention, a framework built from five robotics datasets that generates 6,069 instructions tes The study reports that defensive prompting and in-context learning interventions dramatically improve ER 1.6 Preview's abstention rate to 93.6%, suggesting the underlying capability exists but is not activated by default. All frontier VLMs tested exhibited significant weaknesses in abstention behavior. These findings h
