GPT-5.1 Codex Max vs Claude 3.7 Sonnet
Detailed comparison of capabilities, features, and performance.
Feature
GPT-5.1 Codex Max
Claude 3.7 Sonnet
Model Image
AI Lab
OpenAI
Anthropic
Context Size
400,000 tokens
128,000 tokens
Max Output Size
128,000 tokens
64,000 tokens
Frontier Model
Yes
Yes
Vision Support
Yes
Yes
Description
A version of GPT-5.1 optimized for agentic coding tasks in Codex or similar environments.
The latest Sonnet 3.7 model from Anthropic
Learn more about GPT-5.1 Codex Max
View detailed specifications and capabilities
View model details →Learn more about Claude 3.7 Sonnet
View detailed specifications and capabilities
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