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What is eating your context window?

Paste a real OpenAI or Anthropic request. See how much is system prompt, history, memory, retrieval, tools, and user input — plus likely duplication and leak risks.

Instant map

Token estimates by source

Stays local

Raw prompts never leave the browser

Request JSON

One OpenAI, Anthropic, or generic messages request. Up to 1 million characters.

Model context limit

Analysis runs in your browser. Raw prompts are not uploaded or stored by Context X-Ray.