o3-mini-high vs Claude 4.5 Sonnet (thinking)
Detailed comparison of capabilities, features, and performance.
Feature
o3-mini-high
Claude 4.5 Sonnet (thinking)
Model Image
AI Lab
OpenAI
Anthropic
Context Size
200,000 tokens
1,000,000 tokens
Max Output Size
100,000 tokens
200,000 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
The latest Claude 4.5 Sonnet model from Anthropic with maximum reasoning enabled, 200k reasoning tokens in 1M context.
Learn more about o3-mini-high
View detailed specifications and capabilities
View model details →Learn more about Claude 4.5 Sonnet (thinking)
View detailed specifications and capabilities
View model details →More model comparisons
Try both models in your workspace
Access both o3-mini-high and Claude 4.5 Sonnet (thinking) in a single workspace without managing multiple API keys.
Create your workspace