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o3 vs Claude 4.5 Sonnet

Detailed comparison of capabilities, features, and performance.

Feature
o3
Claude 4.5 Sonnet
Model Image
o3
Claude 4.5 Sonnet
AI Lab
OpenAI
Anthropic
Context Size
200,000 tokens
1,000,000 tokens
Max Output Size
100,000 tokens
64,000 tokens
Frontier Model
Yes
Yes
Vision Support
Yes
Yes
Description
o3 is powerful across all domains. It excels at Math, Science, Coding and Visual Reasoning tasks. Best for multi-step problems, not everyday.
The latest Claude 4.5 Sonnet model from Anthropic with a 1M token context window.

Learn more about o3

View detailed specifications and capabilities

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Learn more about Claude 4.5 Sonnet

View detailed specifications and capabilities

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