GPT-4.1 (fine-tuned)
JSON →Fine-tuned version of GPT-4.1, OpenAI's latest flagship LLM with improved reasoning and a 1M token context window.
Specs
context window 1.0M tokens
max output 33K tokens
input price $2 / 1M tokens
output price $8 / 1M tokens
Capabilities
tool-usejson-modestreamingreasoningcode-generationfunction-callingfine-tunablevisionprompt-caching
Dates
releasedApr 2025
knowledge cutoffJun 2024
Resources
API
full doc /v1/models/ft:gpt-4.1-2025-04-14