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Claude 4 Sonnet

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

Standard Claude 4 Sonnet optimized for balanced performance and efficiency. Excellent coding capabilities (80.74 LiveBench Coding), solid language understanding (71.01), and good web development (Elo 1386). Popular choice for production applications requiring reliable performance without thinking overhead. Cost-effective for general-purpose use.

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

#42

BenchmarkScoreRank

0.81

🥈

2

Agentic Coding

LiveBench Agentic

0.49

19

Web Development

WebDev Arena

1386

19

0.55

43

0.40

47

Rankings

Overall Rank

#42

Coding Rank

#17