GPT-4.1 Nano (fine-tuned)
JSON →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.
Specs
context window 1.0M tokens
max output 33K tokens
input price $0.1 / 1M tokens
output price $0.4 / 1M tokens
Capabilities
tool-usejson-modestreamingcode-generationfunction-callingfine-tunablevisionprompt-caching
Dates
releasedApr 2025
knowledge cutoffJun 2024