Claude Sonnet 4.6
Parameters
-
Context Length
1M
Modality
Multimodal
Architecture
Dense
License
Proprietary
Release Date
17 Feb 2026
Knowledge Cutoff
Aug 2025
Evaluation Benchmarks
Rank
#41
| Benchmark | Score | Rank |
|---|---|---|
StackUnseen | 0.89 | ⭐ 4 |
General Text | 1497 | ⭐ 5 |
Professional Knowledge | 0.87 | ⭐ 8 |
Coding medium | 0.79 | 15 |
Web Development | 1522 | 18 |
Data Analysis medium | 0.78 | 19 |
Reasoning medium | 0.85 | 22 |
Mathematics medium | 0.87 | 24 |
General medium | 0.73 | 25 |
Agent Arena | 0.03 | 25 |
LiveBench Average medium | 0.73 | 31 |
Agentic Coding medium | 0.43 | 36 |
Graduate-Level QA | 0.75 | 37 |
Rankings
Overall Rank
#41
Coding Rank
#22
About Claude Sonnet 4.6
Claude Sonnet 4.6 is a multimodal foundation model engineered for high-performance agentic workflows, complex software engineering, and large-scale document analysis. As a central component of the Claude 4 model family, it utilizes a dense transformer architecture optimized for balancing computational efficiency with high-order reasoning capabilities. The model is specifically designed to function as a versatile workhorse for enterprise automation, supporting advanced tasks such as autonomous navigation of graphical user interfaces and multi-step agentic planning.
Technically, the model introduces several architectural innovations, including a beta 1-million-token context window that enables the processing of extensive codebases and multi-document datasets in a single inference pass. It features a hybrid reasoning framework that supports both adaptive thinking and extended thinking modes, allowing the model to dynamically allocate internal processing tokens for complex problem-solving. Furthermore, the inclusion of context compaction technology facilitates the efficient management of long-running conversations by summarizing historical context as it approaches architectural limits.
Performance is characterized by significant advancements in computer use, where the model demonstrates human-level proficiency in interacting with standard software environments, including web browsers and spreadsheets. It is highly optimized for the software development lifecycle, providing precise instruction following and a reduction in the common pitfalls of overengineering or output latency. The model is deployed via the Anthropic API and major cloud platforms, offering a scalable solution for developers requiring frontier-level intelligence for high-volume production applications.
Technical Specifications
Detailed architecture specifications are limited for proprietary models.
Resources
About Claude 4
Anthropic's fourth generation Claude models with advanced reasoning, extended context windows up to 200K tokens, and configurable thinking effort levels. Features improved safety alignment, nuanced understanding, and sophisticated task completion. Includes Opus (most capable), Sonnet (balanced), and Haiku (fast) variants, with thinking modes that enable transparent chain-of-thought reasoning for complex problems.