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Claude 4 Sonnet Thinking

Parameters

-

Context Length

200K

Modality

Text

Architecture

Dense

License

Proprietary

Release Date

15 Jan 2025

Knowledge Cutoff

-

Technical Specifications

Attention Structure

Multi-Head Attention

Hidden Dimension Size

-

Number of Layers

-

Attention Heads

-

Key-Value Heads

-

Activation Function

-

Normalization

-

Position Embedding

Absolute Position Embedding

Claude 4 Sonnet Thinking

Claude 4 Sonnet with thinking mode for balanced performance and reasoning transparency. Strong coding (77.48 LiveBench Coding) and solid language skills (72.91). Efficient web development (Elo 1393). Good choice for applications requiring explainable AI with moderate complexity requirements.

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.


Other Claude 4 Models

Evaluation Benchmarks

Rank

#19

BenchmarkScoreRank

0.77

7

Web Development

WebDev Arena

1393

12

Agentic Coding

LiveBench Agentic

0.57

13

0.69

20

0.64

30

Rankings

Overall Rank

#19

Coding Rank

#22