Models / openai / GPT-5 Pro

GPT-5 Pro

JSON →
openaillm

The flagship reasoning model in the GPT-5 family, optimized for complex multi-step tasks and deep analysis.

textreasoningtool-usejson-modestreamingcode-generationfunction-callingprompt-cachingvision
homepage ↗docs ↗
Specs
Context & limits
128K
context window
272K
max output
Lifecycle
Dates
released2025-10-06
knowledge cutoff2025-04-01
Resources
homepagehttps://openai.com/index/gpt-5/ ↗
docshttps://platform.openai.com/docs/models ↗