Overview
ChatGPT by OpenAI and Claude by Anthropic are the two leading AI assistants in 2025. Both are capable, but they excel in different areas.
Context Window
Claude offers a 200k token context window, making it ideal for analyzing entire books or large codebases. ChatGPT offers 128k tokens with GPT-4o.
Pricing
Both start at $20/month for their pro tiers. ChatGPT Plus gives access to GPT-4o; Claude Pro gives access to Claude Sonnet.
Verdict
Choose ChatGPT for everyday tasks and image generation. Choose Claude for long document analysis and nuanced reasoning.