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youBencha

What is youBencha?

youBencha is a developer-first CLI framework for evaluating AI-powered coding agents. It provides a structured, reproducible way to evaluate how well AI agents perform real-world coding tasks.

The Problem

Section titled “The Problem”

Organizations using AI coding agents face several challenges:

  • Lack of objective measurement - How do you know if the agent did a good job?
  • No standardized evaluation - Different agents produce different formats, making comparison difficult
  • Regression detection - How do you ensure new model versions don’t break existing capabilities?
  • Quality assessment - Beyond “does it compile?”, how do you evaluate code quality?
  • Cost tracking - Understanding token usage and execution time across evaluations

The Solution

Section titled “The Solution”

youBencha provides:

  • Agent-agnostic architecture through pluggable adapters
  • Flexible evaluation with built-in and custom evaluators
  • Reproducible results via standardized logging (youBencha Log format)
  • Comprehensive reporting with metrics and human-readable insights
  • Pipeline extensibility through pre-execution and post-evaluation hooks
  • Time-series analysis capabilities for regression detection and trend tracking

Who is youBencha For?

Section titled “Who is youBencha For?”

AI Engineers

Quick validation during prompt engineering. Debug agent failures with full context (logs, diffs, metrics). Iterate rapidly on agent configurations.

Development Teams

Cross-test comparison to identify hardest tasks. Pattern recognition for common failure modes. Aggregate metrics (pass rate, similarity scores, costs).

Organizations

Track performance across model/prompt updates. Detect quality degradation early. Cost optimization and ROI tracking.

Key Features

Section titled “Key Features”
  • Standardized evaluation pipeline that works with any agent
  • Pluggable evaluators for different quality dimensions (correctness, style, scope, similarity)
  • Reproducible execution with isolated workspaces and comprehensive logging
  • Flexible reporting from single-run feedback to time-series analysis
  • Extensible architecture supporting custom evaluators and workflows

Next Steps

Section titled “Next Steps”

Ready to get started? Follow these guides:

  1. Installation - Set up youBencha on your system
  2. Quick Start - Run your first evaluation in under 10 minutes