What are the key differences between Codex and Claude 3.7 Sonnet?

Compare Codex and Claude 3.7 Sonnet side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are Codex and Claude 3.7 Sonnet scored?

Codex has an AI score of 8.55/10 and Claude 3.7 Sonnet has an AI score of 8.92/10. Scores are based on category fit, feature coverage, pricing signals, public reception, and recency.

Codex vs Claude 3.7 Sonnet 2026 - Compared

Codex

Claude 3.7 Sonnet

WINNER Claude 3.7 Sonnet

Claude 3.7 Sonnet edges ahead with a score of 8.9/10 compared to 8.6/10 for Codex. While both are highly rated in their...

Codex

8.55 Great

Model Get Codex open_in_new

emoji_events WINNER

Claude 3.7 Sonnet

8.92 Great

Model Get Claude 3.7 Sonnet open_in_new

psychology AI Verdict

Claude 3.7 Sonnet edges ahead with a score of 8.9/10 compared to 8.6/10 for Codex. While both are highly rated in their respective fields, Claude 3.7 Sonnet demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: Claude 3.7 Sonnet

verified Confidence: Low

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description Overview

Codex

Codex is a generative pre-trained model developed by OpenAI and introduced in 2021, specifically designed to translate natural language prompts into functional computer code. As a descendant of the GPT-3 language model, it was further fine-tuned on billions of lines of source code from public GitHub repositories. Codex served as the underlying artificial intelligence engine for the initial release...

Claude 3.7 Sonnet

Claude 3.7 Sonnet is a large language model released by the AI research company Anthropic in 2025. It operates as a hybrid system, allowing users to toggle between a standard fast-response mode and an extended "thinking" mode for complex problem-solving. The extended thinking mechanism enables the model to systematically process reasoning steps before delivering a final output. The model was made...