Claude 4.1 Opus
Parameters
Undisclosed
Context Length
200K
Modality
Text
Architecture
Undisclosed
License
Proprietary
Release Date
5 Aug 2025
Knowledge Cutoff
Mar 2025
API Pricing (per 1M)
Input: $15.00 · Output: $75.00
Evaluation Benchmarks
Rank
#67
| Benchmark | Score | Rank |
|---|---|---|
Software Engineering | 0.73 | 9 |
General Text | auto (16k) 1450 Standard 1414 | 61 94 |
Graduate-Level QA | 0.809 | 64 |
Web Development | 1389 | 75 |
Intelligence Index | auto (16k) 0.23 Standard 0.19 | 135 170 |
Rankings
Overall Rank
#67
Coding Rank
#68
About Claude 4.1 Opus
Claude 4.1 Opus is an enterprise reasoning model from Anthropic designed for meticulous code manipulation and multi-step problem solving. It utilizes an extended thinking framework over a 200K context window for verifiable, drift-free execution.
Technical Specifications
Architecture specifications are undisclosed for proprietary models.
Resources
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.