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Claude Sonnet 4.6

claude-sonnet-4-6
Anthropic · reasoning · api · seen 12m ago
GA Alert me on changes
Context
1M
Max output
128K
Input $/1M
$3.00
Output $/1M
$15.00
Modalities
text · image · document
Released
17 Feb 2026
AI summary
● machine-written

Claude Sonnet 4.6: Anthropic's fastest capable model with 1M context window

Claude Sonnet 4.6 is Anthropic's most capable Sonnet-tier model, offering improved performance across coding, computer use, long-context reasoning, and agent planning. It features a 1M token context window (in beta on API) and maintains the same pricing as its predecessor. The model is positioned as a practical alternative to Opus-class models for many production workloads.

What's new
  • 1M token context window available in beta on API
  • Extended thinking capability enabled
  • Major improvements in computer use and prompt injection resistance compared to Sonnet 4.5
  • Improved coding performance; users prefer it to Opus 4.5 in 59% of early testing cases
  • Available as default model on Claude.ai for Free and Pro plan users
Best for
Advanced coding and large-scale codebase refactoringLong-running agents and complex multi-step autonomous tasksBrowser automation and computer use workflowsEnterprise document generation and financial data analysis
Sources

Source: https://docs.claude.com/en/docs/about-claude/models/overview