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Tom’s Guide
Tom’s Guide
Technology
Amanda Caswell

Claude Opus 4.8 vs Gemini 3.1 Pro: I ran 7 brutal tests to find the smarter AI

Gemini vs claude .

When Anthropic launched Claude Opus 4.8, it immediately reignited the AI chatbot race. After seeing how it performed against ChatGPT, I was curious how it would stack up against Gemini 3.1 Pro. Google's flagship model has quietly earned a reputation among power users for deep research, long-context analysis and future-focused thinking, making it a particularly interesting competitor.

Claude Opus 4.8 is being positioned as Anthropic's most capable model yet, with a particular emphasis on nuanced judgment, intellectual honesty and complex reasoning.

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