o3 vs Claude 4.6 Opus

Detailed comparison of capabilities, features, and performance.

o3

o3

OpenAI
VS
Claude 4.6 Opus

Claude 4.6 Opus

Anthropic
Feature o3 Claude 4.6 Opus
AI Lab OpenAI Anthropic
Context Size 200,000 tokens 1,000,000 tokens
Max Output Size 100,000 tokens 125,000 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 Opus 4.6 model from Anthropic

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