What is Evidently? by evidentlyai
Evidently is an open-source ML and LLM observability framework. Evaluate, test, and monitor any AI-powered system or data pipeline. From tabular data to Gen AI. 100+ metrics.
About What is Evidently?
From the project's README at github.com/evidentlyai/evidently. Lightly cleaned for readability; for the full source see the upstream repo.
An open-source framework to evaluate, test and monitor ML and LLM-powered systems.
Evidently is an open-source Python library to evaluate, test, and monitor ML and LLM systems, from experiments to production.
Works with tabular and text data. Supports evals for predictive and generative tasks, from classification to RAG. 100+ built-in metrics from data drift detection to LLM judges. Python interface for custom metrics. Both offline evals and live mo
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 7.4k | github.com/evidentlyai/evidently |
| GitHub forks | 836 | github.com/evidentlyai/evidently |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 5.4 years | since Nov 2020 |
| Last commit | 5 days ago | May 2, 2026 |
| Releases shipped | 124 | last: 2 months ago |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
Ready to self-host What is Evidently??
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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