Claude 4.1 Opus
Parameters
-
Context Length
200K
Modality
Text
Architecture
Dense
License
Proprietary
Release Date
5 Aug 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 4.1 Opus
Standard Claude 4.1 Opus without thinking mode for efficient operation. Very strong coding (76.07 LiveBench Coding) and excellent language understanding (76.75). Good web development performance (Elo 1391). Delivers high-quality results with lower latency. Well-suited for production environments requiring reliable performance.
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
#40
| Benchmark | Score | Rank |
|---|---|---|
Agentic Coding LiveBench Agentic | 0.53 | ⭐ 4 |
Coding LiveBench Coding | 0.76 | 10 |
Web Development WebDev Arena | 1391 | 16 |
Data Analysis LiveBench Data Analysis | 0.67 | 33 |
Mathematics LiveBench Mathematics | 0.63 | 41 |
Graduate-Level QA GPQA | 0.81 | 44 |
Reasoning LiveBench Reasoning | 0.41 | 46 |
Rankings
Overall Rank
#40
Coding Rank
#18