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o3

JSON →
openai llm
text

OpenAI's o3 reasoning model with enhanced chain-of-thought capabilities for complex problem-solving.

Capabilities

reasoningcode-generationstreamingfunction-callingjson-mode

Dates

releasedApr 2025
knowledge cutoffOct 2024

Resources

homepageopenai.com/index/introducing-o3-and-o4-mini/ ↗
docsplatform.openai.com/docs/models/o3 ↗

API

full doc /v1/models/o3-2025-04-16