Models / openai / GPT-5 Nano

GPT-5 Nano

JSON →
openaillm

The smallest and fastest model in the GPT-5 family, designed for lightweight tasks and edge deployment.

texttool-usejson-modestreamingcode-generationfunction-callingvisionprompt-cachingreasoning
homepage ↗docs ↗
Specs
Context & limits
272K
context window
128K
max output
Lifecycle
Dates
released2025-08-07
knowledge cutoff2025-06-01
Aliases
Also known as
gpt-5-nano
Resources
homepagehttps://openai.com/index/gpt-5/ ↗
docshttps://platform.openai.com/docs/models/gpt-5 ↗