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OpenAgent Eval — pytest-level simplicity for AI evaluation

The open-source evaluation framework for RAG systems and AI Agents.

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Local-first. Framework-agnostic. Developer-friendly.

Getting Started · Documentation · Contributing


Why OpenAgent Eval?

Evaluating RAG systems shouldn't require a PhD or a cloud account. OpenAgent Eval brings pytest-level simplicity to AI evaluation — run from your terminal, get actionable insights, and ship with confidence.

  • Local-first — No cloud services, dashboards, or authentication required
  • Framework-agnostic — Works with LangChain, LlamaIndex, or any custom RAG pipeline
  • 18+ metrics — Retrieval, generation, faithfulness, relevancy, performance, and cost
  • Plugin-based — Extend with custom metrics, providers, and report generators
  • Production-ready — Corpus auditing, failure diagnosis, and synthetic test data generation

Installation

pip install openagent-eval

For development:

git clone https://github.com/OpenAgentHQ/openagent-eval.git
cd openagent-eval
uv sync

Quick Start

1. Initialize Configuration

oaeval init --interactive

oaeval init --interactive wizard demo

The wizard walks you through your dataset path, LLM provider and model, retriever, metric preset, and report format, then writes a ready-to-run config.yaml.

2. Validate Configuration

oaeval validate config.yaml

3. Run Evaluation

oaeval run config.yaml

4. View Results

oaeval report latest

Contributing & Community

OpenAgent Eval is community-built and welcomes contributors of every experience level. If you've used the tool, you already know something worth sharing — a bug, a rough edge in the docs, or a metric you wish existed.

Ways to help:

  • Code — pick up a good first issue or something labeled help wanted, fix a bug, or add a metric or provider.
  • Docs — clarify a guide, fix a typo, or expand the documentation.
  • Bug reports — hit something unexpected? Open an issue with steps to reproduce.
  • Tutorials & examples — show how you use OpenAgent Eval by adding to examples/.

Getting started:

  1. Fork the repository and create a feature branch (git checkout -b feature/your-change)
  2. Make your change and add tests where it makes sense
  3. Run the checks (uv run pytest and uv run ruff check .)
  4. Open a pull request

New to the project? CONTRIBUTING.md walks through setup, the development workflow, and coding conventions in detail.

Where to connect:


Features

Feature Description
CLI + SDK Use via command line or import as a Python library
Beautiful Reports Terminal, Markdown, HTML, and JSON output formats
Failure Analysis Identify why evaluations fail, not just that they failed
Corpus Health Auditor Detect contradictions, staleness, and duplicates before evaluation
LLM-as-Judge Metrics NLI-based scoring for faithfulness and relevancy
Component Diagnosis Blame attribution — retrieval vs generation vs chunking
Synthetic Test Data Auto-generate test cases from your knowledge base

Evaluation Metrics

Retrieval Metrics
  • Context Precision & Recall
  • Precision@K & Recall@K
  • Hit Rate
  • Mean Reciprocal Rank (MRR)
  • Normalized Discounted Cumulative Gain (NDCG)
Generation Metrics
  • Faithfulness (NLI-based)
  • Answer Relevancy (NLI-based)
  • Hallucination Detection
  • Semantic Similarity
  • Exact Match & F1 Score
  • BLEU & ROUGE
  • BERTScore
  • LLM-as-Judge (custom criteria)
Performance & Cost
  • Latency tracking (embedding, retrieval, LLM stages)
  • Token counting (prompt, completion, total)
  • Cost estimation per provider

Supported Providers

LLM Providers: OpenAI · Anthropic · Google Gemini · Groq · OpenRouter · Ollama

Retriever Providers: Chroma · Qdrant · Pinecone · Weaviate · FAISS · pgvector · Elasticsearch · BM25


CLI Reference

Command Description
oaeval init Create configuration file (interactive wizard)
oaeval run <config> Run evaluation pipeline
oaeval report <id> View evaluation reports
oaeval compare <a> <b> Compare two experiments
oaeval list List previous evaluations
oaeval validate <config> Validate configuration
oaeval doctor Check environment and dependencies
oaeval audit --corpus <path> Audit corpus health
oaeval diagnose --report <id> Diagnose failures and attribute blame
oaeval synth --corpus <path> Generate synthetic test cases

SDK Usage

from openagent_eval.core import Engine
from openagent_eval.config import load_config

config = load_config("config.yaml")
engine = Engine(config)
report = await engine.run(dataset)

print(report.summary)

Project Structure

openagent-eval/
├── openagent_eval/
│   ├── cli/              # CLI commands (Typer)
│   ├── config/           # Configuration system (Pydantic)
│   ├── core/             # Core orchestration engine
│   ├── metrics/          # 18+ evaluation metrics
│   ├── providers/        # LLM & Retriever adapters
│   ├── corpus/           # Corpus Health Auditor
│   ├── diagnosis/        # Component Diagnosis
│   ├── synthesis/        # Synthetic Test Data
│   ├── reports/          # Report generators
│   └── plugins/          # Plugin system
├── tests/                # Test suite
├── docs/                 # Documentation
└── examples/             # Tutorials and examples

License

Licensed under the Apache License, Version 2.0. See LICENSE for details.


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