Claude Opus 4.7 Dominates ChatGPT-5.5 Across 7 Hard AI Challenges

TL;DR Summary
Tom's Guide pits ChatGPT-5.5 against Claude Opus 4.7 in seven tough prompts spanning probability, math proofs, chemistry reasoning, and calculus. Across the board, Claude delivers deeper reasoning and more formal demonstrations, with ChatGPT-5.5 showing strengths in structured and straightforward solutions but often lacking the same level of rigor, leading to Claude as the overall winner in this head-to-head AI face-off.
- 7-0 wipeout: I put ChatGPT-5.5 vs Claude 4.7 through 7 impossible tests — and the results shocked me Tom's Guide
- Introducing GPT-5.5 OpenAI
- OpenAI’s GPT-5.5 in Microsoft Foundry: Frontier intelligence on an enterprise ready platform Microsoft Azure
- OpenAI’s GPT-5.5 vs Claude Opus 4.7: Which is better? Mashable
- OpenAI Unveils Its New, More Powerful GPT-5.5 Model The New York Times
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