ChatGPT (by OpenAI) and Claude (by Anthropic) are both large language model assistants, but they have different strengths. ChatGPT has a larger plugin ecosystem and image generation built in (DALL-E). Claude tends to produce longer, more nuanced writing and is generally considered better at following complex instructions and refusing harmful requests. For coding, both are strong. For research and analysis, Claude handles longer documents better. For creative tasks and image generation, ChatGPT has more built-in tools. Neither is definitively better — they are optimized for different use cases.