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Open-weight models lag closed frontier by 4 months, Epoch AI finds

Open-weight models lag closed frontier by 4 months, Epoch AI findsepochai.substack.com

Since January 2026, open-weight models have trailed closed models by 4 months, with the gap widening since October 2025. Hyperscaler capital expenditures have quadrupled since GPT-4's release, matching previous projections.

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9 days ago
Open-weight models lag closed frontier by 4 months, Epoch AI finds — AIBriefs