Models / openai / o3

o3

JSON →
openaillm

OpenAI's next-generation reasoning model with advanced chain-of-thought and multimodal capabilities.

textimagereasoningcode-generationtool-usejson-modestreamingfunction-callingvisionprompt-caching
homepage ↗docs ↗
Specs
Context & limits
200K
context window
100K
max output
Lifecycle
Dates
released2025-08-01
knowledge cutoff2025-06-01
Resources
homepagehttps://openai.com/index/o3/ ↗
docshttps://platform.openai.com/docs/models/o3 ↗