Claude 4.5 Opus Thinking
Parameters
-
Context Length
200K
Modality
Text
Architecture
Dense
License
Proprietary
Release Date
1 Nov 2025
Knowledge Cutoff
May 2025
Evaluation Benchmarks
Rank
#36
| Benchmark | Score | Rank |
|---|---|---|
Professional Knowledge | 0.87 | ⭐ 9 |
General Text high (32k) | 1473 | 27 |
Web Development high (32k) | 1494 | 35 |
Rankings
Overall Rank
#36
Coding Rank
-
About Claude 4.5 Opus Thinking
Claude 4.5 Opus Thinking represents a sophisticated iteration of Anthropic's flagship large language model, specifically engineered for high-stakes reasoning, autonomous agent orchestration, and complex software engineering. This model integrates a hybrid reasoning engine that allows practitioners to balance computational depth with latency through an 'effort' parameter. By enabling extended thinking mode, the model engages in a systematic internal deliberation process before producing a final response, which is particularly effective for multi-phase planning, architectural refactoring, and navigating ambiguous technical specifications.
Technically, the model is built upon a dense transformer architecture optimized for sustained coherence across long horizons. It introduces significant advancements in state management, including a dedicated memory tool that allows for persistent context across disparate sessions and advanced tool-discovery mechanisms for large-scale API environments. These architectural refinements allow the system to maintain focus on long-horizon objectives, effectively reducing reasoning drift and ensuring consistency during extended collaborative workflows.
Operationally, the model is designed for enterprise-grade applications where accuracy and structural integrity are the primary requirements. It excels in cross-file codebase analysis, financial modeling involving heterogeneous data sources, and complex browser-based automation. With a substantial context window and an improved token efficiency profile, it serves as a robust foundation for building agentic systems that require minimal human intervention and a high degree of transparency in their decision-making processes.
Technical Specifications
Detailed architecture specifications are limited for proprietary models.
About Claude 4.5
Enhanced Claude models with further improvements in reasoning, coding, and agentic capabilities. Features advanced thinking modes with adjustable effort levels (high, medium, standard) for optimal performance-latency tradeoffs. Excels at complex analysis, software development, web development, and long-context understanding. Includes thinking variants that expose reasoning process for improved transparency.