Claude is widely considered the best AI for long-form writing, creative projects, and nuanced analysis. Its prose is more natural and less formulaic. Gemini is excellent for research-heavy writing and tasks requiring Google knowledge.
Gemini 1.5 Pro has a 1 million token context window, while Claude 3.7 Sonnet has 200,000 tokens. For extremely long documents, Gemini wins. For most practical purposes, both are more than sufficient.
Claude is built with Constitutional AI and is generally considered more cautious and less likely to produce harmful content. Gemini has strong safety filters but occasionally errs on the side of over-caution.