Claude 4 Opus Description Anthropic’s Claude Opus 4 is an advanced AI model for coding, reasoning, and analytics. With a 200K-token context window, it delivers unmatched precision.
Technical Specification Performance Benchmarks Claude Opus 4 is optimized for coding, reasoning, and text-based analytics.
Context Window : 200K tokens.Output Capacity : Up to 32K tokens per response.Performance Benchmarks : SWE-bench: 72.5%, Terminal-bench: 43.2%.API Pricing :Input tokens: $15.75 per million tokens. Output tokens: $78.75 per million tokens. Cost for 1,000 tokens: $0.01575 (input) + $0.07875 (output) = $0.0945 total. Performance Metrics Opus 4 Metrics Key Capabilities Claude Opus 4 delivers precise outputs for complex workflows.
Advanced Coding : Excels in multi-file code refactoring and autonomous coding tasks.Advanced Reasoning : Superior in multi-step reasoning for analytics and problem-solving.Tool Utilization : Supports function calling and JSON structuring for API automation.API Features : Provides streaming and function calling for scalable applications.Optimal Use Cases Coding : Large-scale code refactoring, autonomous PRs, and multi-file changes.Data Analysis : Processing complex business datasets.Business Automation : Streamlining workflows with API integration.Complex Problem-Solving : Tackling multi-step reasoning tasks.Code Samples
Comparison with Other Models Comparison with Other Models
Vs. Gemini 2.5 Flash : Superior coding accuracy (72.5% vs. 63.8% SWE-bench), ideal for complex software engineering.Vs. OpenAI o3-mini : Stronger coding performance (72.5% vs. 69.1% SWE-bench), better for autonomous workflows.Vs. Qwen3-235B-A22B : Higher coding precision (72.5% vs. ~60% SWE-bench, estimated), optimized for multi-file coding.Limitations No vision capabilities. No fine-tuning support. Limited to text-based tasks. API Integration Accessible via AI/ML API. Documentation: available here .