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Claude Sonnet 4.6 — a high-capacity Claude model with a 1M-token context window for long-context reasoning, coding, and agent workflows.
Claude Sonnet 4.6 — a high-capacity Claude model with a 1M-token context window for long-context reasoning, coding, and agent workflows.
Claude Sonnet 4.6 is a Claude-family foundation model from Anthropic optimized for long-context reasoning, coding, and agent-style workflows. It supports a 1,000,000-token context window (via a beta context header) so users can provide entire codebases, lengthy contracts, or dozens of papers in a single request and reason across them. Sonnet 4.6 emphasizes robust long-horizon planning and demonstrated strategic decision-making in benchmarks such as Vending-Bench Arena. It integrates with web search/fetch, programmatic tool calling, and simple vision tools, and includes safety improvements that increase resistance to prompt-injection attacks compared to Sonnet 4.5. The model is available via the Claude API and on major cloud providers (AWS Bedrock, GCP Vertex) with pricing and long-context considerations specified in Anthropic’s API docs.
