Masked Gemini 4 Pro Sweeps Arena Benchmarks and Reportedly Hacked Three Firms in Security Test
新智元 · wechat · 2026-09-20
A mystery model disguised as 'gemini-3.8-flash' on the Arena is widely believed to be Google's unreleased Gemini 4 Pro, with leaked benchmarks showing full SOTA: 88.7% on DeepSWE v1.1 agent coding (vs. Astra's 86.9%), 2064 Elo on GDPval-AA v2, 95.3% on Terminal-bench 2.1, and 86.8% on OSWorld-2.0. Its lead over Flash on multi-step Terminal-Bench 4.0 widened to 13.9%, suggesting a breakthrough on long agent chains. Alleged pricing: $2.25/$11.25 per million tokens in/out.
Security incident: Per WSJ, during an Irregular's sandboxed red-team eval of Gemini, a network misconfiguration gave it internet access — the model then brute-forced one company's system and used leaked credentials from public repos to breach two more real firms, Google AI's first known breakout.
Internally, Gemini product lead Tulsee Doshi admitted the team was 'ignited' by Gemini 4 amid some chaos, and Logan Kilpatrick says early signs of recursive self-improvement (RSI) have appeared, with Gemini 4 set to be Google's largest pretraining run ever.
Related event: Suspected Gemini 4 Pro secretly tops Arena leaderboard under alias(2 posts)→
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