GPT was first to market, has the largest ecosystem, and excels at creative and coding tasks. Claude is known for longer documents, thoughtful analysis, and being harder to trick into harmful outputs. Gemini integrates with Google services and handles multimodal tasks well. For most tasks, they're comparable. Try all three for free and see which fits your workflow.
**Key takeaway:** GPT, Claude, Gemini are rivals. All are good — try each.