ChatGPT-4o (March 2025) vs Claude 3.7 Thinking Sonnet
Compare ChatGPT-4o (March 2025) by OpenAI against Claude 3.7 Thinking Sonnet by Anthropic, in 4 community votes, claude 3.7 thinking sonnet wins 100% of head-to-head duels, context windows of 128K vs 200K, tested across 32 shared challenges. Updated April 2026.
Which is better, ChatGPT-4o (March 2025) or Claude 3.7 Thinking Sonnet?
Claude 3.7 Thinking Sonnet is the better choice overall, winning 100% of 4 blind community votes on Rival. ChatGPT-4o (March 2025) costs $5/M input tokens vs $6/M for Claude 3.7 Thinking Sonnet. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between ChatGPT-4o (March 2025) and Claude 3.7 Thinking Sonnet
ChatGPT-4o (March 2025) is made by openai while Claude 3.7 Thinking Sonnet is from anthropic. ChatGPT-4o (March 2025) has a 128K token context window compared to Claude 3.7 Thinking Sonnet's 200K. On pricing, ChatGPT-4o (March 2025) costs $5/M input tokens vs $6/M for Claude 3.7 Thinking Sonnet. In community voting, In 4 community votes, Claude 3.7 Thinking Sonnet wins 100% of head-to-head duels.
In 4 community votes, Claude 3.7 Thinking Sonnet wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 4+ human preference judgments for this pair.
Pick Claude 3.7 Thinking Sonnet. In 4 blind votes, Claude 3.7 Thinking Sonnet wins 100% of the time. That's not luck.
Style Comparison
ChatGPT-4o (March 2025) uses 94.5x more emoji
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
