Use the 1M Context Window for Full-Project Debugging
Upload entire codebases or long documents for instant architectural insights.
Leverage the 1M token context window to perform deep analysis across entire technical repositories or massive document sets in a single session.
The Scenario
You are taking over a legacy project with thousands of lines of code and no documentation. You need to understand how the data flows across ten different modules before making a change.
Before & after
Developers manually search or grep through multiple files and folders to trace logic or find bugs. This exploration often takes 30–60 minutes for large projects.
Input the entire codebase or document set into Claude. Using Sonnet 5, the model can navigate the 1M token context to identify dependencies and logic in 2–3 minutes.
The Prompt
I am uploading [DESCRIPTION_OF_FILES] including the entire codebase. Please analyze the relationship between [MODULE_A] and [MODULE_B] and find where the [SPECIFIC_BUG_OR_LOGIC] is occurring. Support your findings with specific file references.
Claude Sonnet 5's 1M context window allows you to upload massive repositories or technical manuals directly without needing to chunk the data. This model excels at 'needle in a haystack' tasks across vast datasets.
Source
Claude Platform - Claude Platform Docs"Claude Sonnet 5 supports a 1M token context window, 128k max output tokens."