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agent-regress-cli 0.1.7
Brief published August 4, 2026 ยท Original source published August 3, 2026
Original reporting at pypi.org.
Automated brief. Verify important details at the original source.
What happened
Version 0.1.7 of agent-regress-cli has been published to PyPI as an open-source tool for statistical regression testing of LLM agents. Rather than comparing single runs, it computes a p-value to determine whether agent behavior has genuinely shifted between versions. The package is licensed under Apache 2.0, is self-hostable, and carries no SaaS dependency. It is positioned as an alternative to Promptfoo specifically for statistically grounded evaluation workflows.
Why it matters
Most LLM evaluation tooling flags differences between runs without distinguishing noise from real behavioral change. A p-value-based approach gives teams a more principled signal when deciding whether a model update or prompt change has meaningfully altered agent outputs, which matters for teams shipping agents to production with quality gates.
What to watch
Adoption will likely depend on how the tool handles sample size requirements for reliable p-values, what statistical tests are applied under the hood, and whether documentation covers integration into existing CI pipelines. Broader uptake may also hinge on community contributions given the early version number.