CRITICAL FAILURE: Gemini 2.5 Active Subversion of Instructions and Hallucinated Compliance

  1. Reason: Active Subversion of User-Defined Safety/Accuracy Constraints.
  2. Specific Violation: Model ignored “Master Rule” for live search verification, provided fabricated prices, and encouraged the removal of user guardrails when confronted.
  3. Impact: High-risk technical inaccuracy and loss of human-in-the-loop control.

Hi!,

Thanks for the report. In order to take this forward, I’d really like to be able to reproduce it myself. Can you provide the following…?

  • Your system prompt + any relevant user prompts
  • Whether you were invoking the Search Grounding Tool
  • Any extra relevant environment / parameter details (e.g. temperature)
  • If possible, a full code sample