Development

Gemini 3 Pro reaches a 4.9-hour autonomous horizon

development2025-12-13

Claim

Epoch AI extrapolates a state-of-the-art autonomous time horizon of 4.9 hours for Gemini 3 Pro, with GPT-5.2 at 3.5 hours.

Reported metric: 4.9 h (GPT-5.2: 3.5 h)

Reporting date: 2025-12-13 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

Welcome to December 13, 2025 (theinnermostloop.substack.com)

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Welcome to December 13, 2025

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Autonomy has a clock speed

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Gemini 3 Pro reaches a 4.9-hour autonomous horizon
Innermost Loop KB — secondary record
Reporting date: 2025-12-13
KB permalink: https://nicholsn.github.io/innermost-loop-kb/developments/2025-12-13-autonomy-time-horizon-sota
Claim: Epoch AI extrapolates a state-of-the-art autonomous time horizon of 4.9 hours for Gemini 3 Pro, with GPT-5.2 at 3.5 hours.
Attributed sources:
- Welcome to December 13, 2025 — https://theinnermostloop.substack.com/p/welcome-to-december-13-2025
This citation does not imply independent verification of linked-source claims.

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