Even better, if you have access to multiple models, tell it you got the code from another AI agent.

I did an experiment on this a few weekends ago and Codex for example was a lot more adversarial and thorough in its review when given Claude-authored code compared to when given the same code with "I wrote this, can you review it?"

If it's within its context window, it will know you're lying, so either compact or start a new chat (don't do this on Claude, it dings your usage, always has).