Top 3 AI Evaluation Tools

We tested and reviewed the best ai evaluation tools tools in 2026. Every tool is evaluated on functionality, UX, pricing, and real-world performance.

mastra-ai

From the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.

openai

Evals is a framework for evaluating LLMs and LLM systems, and an open-source registry of benchmarks.

reworkd

Open source AI Agent evaluation framework for web tasks 🐒🍌