Claude Sonnet 4.6
Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work.
Specifications
| Lab | Anthropic |
|---|---|
| Context window | 1M tokens |
| Input price | $3.00/1M |
| Output price | $15.00/1M |
| Release | Feb 2026 |
Strengths
- Frontier performance across coding, agents, and professional work
- Most capable Sonnet-class model closing gap with Opus tier
- Excellent for iterative development and complex codebase navigation
- Confident computer use for web QA and workflow automation
Weaknesses
- Priced above previous Sonnet generation ($3/$15 per 1M tokens)
- Still below Opus on the hardest reasoning benchmarks
Best for
- Day-to-day coding and iterative development
- Agentic automation and computer use
- Professional document creation and editing
In Depth: Claude Sonnet 4.6
Summary
Claude Sonnet 4.6 is an AI model from Anthropic.
Released in Feb 2026. It currently appears in the Overall category on LMRank and 1 other category. It takes image and text input and produces text output, with a context window of 1M tokens. Input pricing is $3.00 per 1M tokens and output is $15.00 per 1M tokens on OpenRouter.