AsOf

OpenAI · featuredirect preference optimization

validasserted
Valid from
2025-06-04
Valid until
still holds
Published
2025-06-04
Recorded by AsOf
2026-11-02
Checked
2026-11-02 · its source page states the value and the date
Confidence
0.70

Sources

“Jun 4 Feature v1/fine_tuning Added fine-tuning support with direct preference optimization for the models gpt-4.1-2025-04-14 , gpt-4.1-mini-2025-04-14 , and gpt-4.1-nano-2025-04-14 .”— what the page says, read 2026-11-02