Claude 4.5 Opus vs GPT-4o mini

Detailed comparison of capabilities, features, and performance.

Claude 4.5 Opus

Claude 4.5 Opus

Anthropic
VS
GPT-4o mini

GPT-4o mini

OpenAI
Feature Claude 4.5 Opus GPT-4o mini
AI Lab Anthropic OpenAI
Context Size 200,000 tokens 128,000 tokens
Max Output Size 64,000 tokens 16,384 tokens
Frontier Model Yes No
Vision Support Yes Yes
Description The latest Opus 4.5 model from Anthropic OpenAI's affordable and intelligent small model for fast lightweight tasks

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