Claude 4.1 Opus Thinking
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 Thinking
Claude 4.1 Opus with thinking mode enabled for complex reasoning tasks. Strong performance across reasoning (72.33), coding (74.66), and mathematics (73.19). Good web development results (Elo 1391). Features transparent reasoning process beneficial for understanding model decisions. Suitable for analytical and technical applications.
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
#18
| Benchmark | Score | Rank |
|---|---|---|
Agentic Coding LiveBench Agentic | 0.59 | 10 |
Reasoning LiveBench Reasoning | 0.72 | 16 |
Web Development WebDev Arena | 1391 | 16 |
Coding LiveBench Coding | 0.75 | 17 |
Mathematics LiveBench Mathematics | 0.65 | 28 |
Rankings
Overall Rank
#18
Coding Rank
#27