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Frontier improvement rates nearly doubled after April 2024
Claim
The Epoch Capabilities Index showed frontier model improvement rates nearly doubled after April 2024, driven by the shift to reasoning.
Reported metric: ~2x rate
Reporting date: (not necessarily the event date)
Sources
Attribution and reporting linked by this record; links do not imply independent verification.
- Welcome to December 24, 2025 (theinnermostloop.substack.com)
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