gpt-4.1-nano
validasserted
- Valid from
- 2025-05-07
- Valid until
- still holds
- Published
- 2025-05-07
- Recorded by AsOf
- 2026-11-02
- Checked
- 2026-11-02 · its source page states the value and the date
- Confidence
- 0.70
Sources
“May 7 Feature v1/fine-tuning v1/responses v1/chat/completions Launched support for reinforcement fine-tuning . Learn about available fine-tuning methods . gpt-4.1-nano is now available for fine-tuning.”— what the page says, read 2026-11-02
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