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

GPT-4.1 (fine-tuned)

JSON →
openaillm

Fine-tuned version of GPT-4.1, OpenAI's latest flagship LLM with improved reasoning and a 1M token context window.

texttool-usejson-modestreamingreasoningcode-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 ↗