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o3

At a glance

OpenAI's most powerful reasoning model — top across math, coding, and science.

79200K ctx$2.00/$8.00 per M#27/92
Agent Demos
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AI Output
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Benchmarks
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Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI79.2
Reasoning & Knowledge
Graduate Science81.8%Expert-Level20.3%Factual Recall53.0%
Math
Math Problems97.8%Competition Math83.9%Research Math18.7%
Coding
Real-World Coding62.3%Code Editing81.3%
Agentic
Novel Reasoning6.5%Task Horizon1.5h
Specs
200K
Context
100K
Max output
Apr 2025
Released
Capabilities
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$2.00/M tokens
Output$8.00/M tokens
Cache read$0.50/M tokens
Web search$0.01/search
Chat with o3Go to model