o3-pro vs Claude 4.5 Sonnet
Detailed comparison of capabilities, features, and performance.
Feature
o3-pro
Claude 4.5 Sonnet
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-pro a version of o3 that uses more compute to think harder and provide reliable answers to challenging problems.
The latest Claude 4.5 Sonnet model from Anthropic with a 1M token context window.
Learn more about o3-pro
View detailed specifications and capabilities
View model details →Learn more about Claude 4.5 Sonnet
View detailed specifications and capabilities
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