Claude 4.6 Opus Thinking
Parameters
-
Context Length
200K
Modality
Multimodal
Architecture
Dense
License
Proprietary
Release Date
1 Feb 2026
Knowledge Cutoff
-
Technical Specifications
Attention
Attention Structure
Multi-Head Attention
Attention Heads
-
Key-Value Heads
-
Attention Head Dimension
-
Position Embedding
Absolute Position Embedding
RoPE Theta
-
Sliding Window Attention
-
Sliding Window Size
-
Normalization
-
Activation Function
-
Dimensions
Hidden Dimension Size
-
Number of Layers
-
FFN Intermediate Size (Dense)
-
Multi-Token Prediction Heads
-
Tokenizer
Vocabulary Size
-
Claude 4.6 Opus Thinking
Claude 4.6 Opus Thinking represents Anthropic's most capable reasoning model with extended thinking capabilities. Features advanced chain-of-thought processing for complex problem-solving, exceptional performance on mathematical and scientific reasoning tasks, and superior coding abilities. Utilizes deliberative reasoning to tackle challenging multi-step problems with enhanced accuracy and reliability. Ideal for research, advanced analysis, and tasks requiring deep reasoning.
About Claude 4.6
Anthropic's Claude 4.6 series introduces breakthrough capabilities in extended reasoning, creative collaboration, and safety. Features variants including Opus Thinking with advanced chain-of-thought processing and Sonnet for balanced performance. These models excel at complex reasoning tasks, coding, creative writing, and nuanced analysis with enhanced constitutional AI safeguards.
Other Claude 4.6 Models
Evaluation Benchmarks
Rank
#3
| Benchmark | Score | Rank |
|---|---|---|
Reasoning LiveBench Reasoning | 0.89 | 🥇 1 |
Web Development WebDev Arena | 1548 | 🥇 1 |
StackUnseen ProLLM Stack Unseen | 0.939 | 🥈 2 |
Mathematics LiveBench Mathematics | 0.89 | ⭐ 7 |
Coding LiveBench Coding | 0.78 | 8 |
Agentic Coding LiveBench Agentic | 0.62 | 8 |
Data Analysis LiveBench Data Analysis | 0.70 | 13 |
Rankings
Overall Rank
#3 🥉
Coding Rank
#2 🥈