Evaluation of Anthropic's Claude Opus 4.1

Overview

Anthropic has released Claude Opus 4.1, their latest flagship model with enhanced capabilities for complex reasoning and coding tasks.

Problem to solve

  • Assess how quickly we could deploy Claude Opus 4.1 in our production environment
  • Execute a Duo Workflow SWE benchmark evaluation using Claude Opus 4.1
  • Compare performance against existing Claude models (Sonnet 3.5, Sonnet 4.0) to determine migration feasibility

Evaluation Criteria

Based on previous evaluations, we should assess:

  1. Performance Metrics

    • Resolution success rate on SWEBench challenges
    • Performance gap (RMSE) compared to perfect scores
    • Consistency across multiple evaluation runs

  2. Operational Considerations

    • Tool usage patterns and efficiency
    • Latency and response times
    • Error rates and stability
    • Cost implications

  3. Migration Assessment

    • Risk assessment for different Duo features
    • Recommended migration strategy (phased vs. full deployment)
    • Feature-specific compatibility analysis

Expected Deliverables

  • SWEBench evaluation results comparing Claude Opus 4.1 against baseline models
  • Performance analysis including resolution rates, tool usage patterns, and latency metrics
  • Migration recommendation with risk assessment
  • Documentation of any model-specific issues or optimizations needed

Evaluation Setup

Use the established evaluation framework:

  • Dataset: validation_stratified_b06f4db4_p20 split (31 examples)
  • Multiple iterations (3x) for statistical significance
  • Comparison against Sonnet 3.5, Sonnet 4.0 baselines
  • LangSmith tracking for detailed analysis