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What’s the Difference Between ChatGPT, Gemini, Claude, and Perplexity?

ChatGPT is a broad general-purpose assistant. Gemini may appeal to users working within Google's ecosystem. Claude supports writing, analysis, documents, and project-based work. Perplexity is strongly oriented toward web research with cited answers. The best fit depends on the task, sources needed, ecosystem, privacy requirements, and comfort level.