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Epoch AI found that GLM 5.3, a freely downloadable open-weight model, used security fixes published but not yet shipped to users, plus a flaw it found itself, to compromise all six Firefox releases between 17 September and 26 October 2026, at a cost of about $1,000
Verified 2026-11-01
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Cheap, freely available models can now turn public software fixes into working attacks, raising the value of fast patching and of cybersecurity spending.
The screener · 72 companiesEvery layer of the AI chain, priced dailyHow this was verifiedEvery figure links to the filing it came from
More on Models
- AI models can now win gold at the International Mathematical Olympiad, yet Stanford's 2026 AI Index found they still fumble a task most children master early. Across ClockBench's 180 clock designs and 720 questions, the top model, GPT-5.4 High, read analog clocks correctly only 50.6% of the time, versus 90.1% for humans
- After briefly nearly closing in 2024, the performance gap between the best closed-weight and open-weight AI models widened again on the Arena leaderboard. As of March 2026, Stanford's 2026 AI Index finds the top closed model leads the top open model by 3.3%, up from a 0.5% lead in August 2024
- Stanford's 2026 AI Index tracks how AI models perform on GPQA Diamond, a set of PhD-level chemistry and physics questions designed to resist Google searches. Mean model accuracy on the benchmark reached 93% in 2025, compared with an expert human validator baseline of 81.2% -- AI models now beat PhD-level experts by 12 points on GPQA Diamond
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