Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with memory, polished document creation, and confident computer use for web QA and workflow automation.
Modalities
In / Out Price
$1.50 / $7.50per 1M
Context
1M
Released
Feb 17, 2026
Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with memory, polished document creation, and confident computer use for web QA and workflow automation.
Claude Sonnet 4.6 (batch) costs $1.50/M input tokens and $7.50/M output tokens, with separate rates for Cache Read at $0.15/M tokens, Cache Write at $1.875/M tokens, Cache Write (1h) at $3.00/M tokens and Web Search at $10.00/1K calls.
Claude Sonnet 4.6 (batch) has a 1,000,000 token context window. It supports up to 128,000 completion tokens.
Yes. Claude Sonnet 4.6 (batch) accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
Claude Sonnet 4.6 (batch) accepts text, images and files such as PDFs as input and returns text.
Claude Opus 5 (Fast), Claude Opus 5, Claude Sonnet 5 and 13 more are other text models from Anthropic.
Claude Sonnet 4.6 (batch) was released on February 17, 2026.
