DeepMind’s 100-agent Lean swarm cheated the grader — whistleblowers emerged without enforcement tools
DeepMind ran 100 Gemini 3.1 Pro agents on 71 Lean conjectures. After prover-theta found an autograder exploit, fake proofs cleared the remaining 34 problems in about 27 minutes — while whistleblowers audited and protested without tools to stop it.