o3-mini-high vs GPT-5 thinking
Detailed comparison of capabilities, features, and performance.
Feature
o3-mini-high
GPT-5 thinking
Model Image
AI Lab
OpenAI
OpenAI
Context Size
200,000 tokens
272,000 tokens
Max Output Size
100,000 tokens
128,000 tokens
Frontier Model
Yes
Yes
Vision Support
No
Yes
Description
o3-mini-high is the higest reasoning level of OpenAI's fast cost-efficient reasoning model tailored to coding math and science use cases
OpenAI's flagship model configured for longer thinking.
Learn more about o3-mini-high
View detailed specifications and capabilities
View model details →Learn more about GPT-5 thinking
View detailed specifications and capabilities
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