Claude 3.5 vs GPT-4: benchmark roundup

We ran Claude 3.5 and GPT-4 on coding, reasoning, and long-document tasks.

Coding Both handle refactors and tests well. Claude has a slight edge on very long codebases thanks to context. GPT-4 is strong in Python and JS ecosystems.

Reasoning Multi-step and math tasks are close. Claude 3.5 is strong on nuanced instructions; GPT-4 on structured outputs. Your prompt style will sway the result more than the model.

Long documents Claude’s 200K context makes it better for single-doc analysis. GPT-4 is improving with long context; for 50K+ tokens we still prefer Claude for one-shot summarization.

Verdict Use Claude for long docs and codebases; use GPT-4 when you need plugins or tight ecosystem integration. Many teams use both.