Models / openai / GPT-4.1 Nano (fine-tuned)

GPT-4.1 Nano (fine-tuned)

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openaillm

Fine-tuned version of GPT-4.1 Nano, OpenAI's smallest and fastest model in the GPT-4.1 family with a 1M token context window.

texttool-usejson-modestreamingcode-generationfunction-callingfine-tunablevisionprompt-caching
homepage ↗docs ↗
Specs
Context & limits
1M
context window
33K
max output
Lifecycle
Dates
released2025-04-14
knowledge cutoff2024-06-01
Resources
homepagehttps://platform.openai.com/docs/models/gpt-4-1 ↗
docshttps://platform.openai.com/docs/api-reference/fine-tuning ↗