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Statistical regression testing for LLM agents
GitHub & Open Source
Open Source
GitHub
Developer Tools
Listed Aug 5, 2026
Statistical regression testing for LLM agents. Run versions A and B 50 times to get a p-value, Cohen's d, and a 95% CI proving whether behavior actually shifted. While DeepEval, Braintrust, and Promptfoo test single responses against a threshold, none measure distribution drift. It is completely self-hostable under an Apache 2.0 license and requires no SaaS subscriptions. Works natively with LangGraph, OpenAI Agents SDK, CrewAI, and LangChain LCEL. Start testing: `pip install agent-regress-cli`.
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