AI NEWS: Claude Sonnet 4 Gets 1M Token Context Window, Can Now Swallow Entire Codebases

Anthropic just upgraded Claude Sonnet 4 with a massive 1 million token context window, a 5x increase from its previous 200K limit. This means Claude can now analyze entire codebases, full novels, or massive document sets in a single prompt.

What Happened:

Claude Sonnet 4 now supports up to 1 million tokens of context on the Anthropic API, a 5x increase. The expanded context window allows Claude to process and reason over much larger amounts of text in a single request, putting it on par with Google Gemini and OpenAI's million-token models. Users can now load entire codebases, including source files, tests, and documentation for comprehensive analysis. The feature is currently in public beta on the API.

Why This Matters for Agencies:

Codebase Analysis: Upload entire client repositories for bug detection, refactoring, and documentation without splitting across multiple prompts.
Document Synthesis: Process massive PDFs, reports, or research in one go instead of chunking and summarizing.
New Service Opportunities: Offer comprehensive code audits or large-scale content analysis as premium services.
Workflow Efficiency: Price has substantially increased, so smart context management becomes crucial for profitability.

Bottom Line: Claude's 1M token window opens doors to enterprise-level analysis tasks previously impossible. Start piloting with smaller clients to test cost effectiveness before scaling up.

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