Claude Sonnet 4 expands context window to 1 million tokens across major cloud platforms
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Summary
Anthropic has expanded Claude Sonnet 4's context window to 1 million tokens (a 5x increase), now available in public beta on the Anthropic API, Amazon Bedrock, and Google Cloud's Vertex AI. This allows processing of entire codebases with over 75,000 lines of code or dozens of research papers in a single request. The update enables more comprehensive use cases including codebase analysis, document synthesis, and complex agent workflows with hundreds of tool calls.
Key quotes
· 3 pulledClaude Sonnet 4 now supports up to 1 million tokens of context on the Anthropic API—a 5x increase that lets you process entire codebases with over 75,000 lines of code or dozens of research papers in a single request.
Long context support for Sonnet 4 is now in public beta on the Claude Developer Platform natively, and in Amazon Bedrock and Google Cloud's Vertex AI.
With longer context, developers can run more comprehensive and data-intensive use cases with Claude
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