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OpenAI, 20 Dec 2024.

Lab
OpenAI
Released
20 Dec 2024
Kind
Language, Language modeling/generation
Training compute
Not disclosed
Parameters
Not disclosed
Capability index
146.9 (Epoch)
Task length at 50% success
2.0 h (METR)
Organisations
OpenAI
Country
United States

Data: Epoch AI (Creative Commons Attribution), releases too new for it from OpenRouter, and METR. Updated 25 Sep 2026.