o3-mini-high vs Claude 4.6 Opus

Detailed comparison of capabilities, features, and performance.

o3-mini-high

o3-mini-high

OpenAI
VS
Claude 4.6 Opus

Claude 4.6 Opus

Anthropic
Feature o3-mini-high 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 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 Opus 4.6 model from Anthropic

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