It depends on your use case. ChatGPT (GPT-4) has a larger plugin ecosystem and built-in image generation via DALL-E. Claude tends to produce longer, more nuanced writing and is generally better at following complex multi-step instructions. For coding, both are strong — Claude handles larger codebases in a single context window. For creative work and image generation, ChatGPT has more built-in tools. For research, analysis, and long documents, Claude's larger context window gives it an edge. Try both with your actual work — a 20-minute test with a real task tells you more than any comparison article.