GPT-5.4 (thinking) vs Claude 4.5 Opus
Detailed comparison of capabilities, features, and performance.
Feature
GPT-5.4 (thinking)
Claude 4.5 Opus
Model Image
AI Lab
OpenAI
Anthropic
Context Size
1,050,000 tokens
200,000 tokens
Max Output Size
128,000 tokens
64,000 tokens
Frontier Model
Yes
Yes
Vision Support
Yes
Yes
Description
OpenAI's frontier model configured with high reasoning effort for complex professional tasks.
The latest Opus 4.5 model from Anthropic
Learn more about GPT-5.4 (thinking)
View detailed specifications and capabilities
View model details →Learn more about Claude 4.5 Opus
View detailed specifications and capabilities
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