License
Apache-2.0, and free in the way that matters
EvalGlass Core is open source under Apache License 2.0. EvalGlass Discovery and EvalGlass Intelligence are separate commercial products. Core carries no subscription and no hosted tier, and nothing phones home. The economics are not a footnote — they are the design.
The license
EvalGlass Core is released under the Apache License 2.0 — as is the open EvalGlass Protocol, the evidence/bundle schemas and offline verifier. You can use Core commercially, modify it, vendor it into your own repo, and ship products built around it — without asking permission and without paying for a seat.
Apache-2.0 also carries an explicit patent grant: contributors license the patents that read on their contributions, so adopting Core does not quietly expose you to patent claims from the people who wrote it.
Three honest "no"s — about Core
EvalGlass Core is pre-alpha and local-first. Because Core runs entirely on your machine and in your CI, there is no place to insert a meter into it. These are not promises we are choosing to keep — they are properties of how Core is built.
- No platform to pay for. Core is not a hosted service, a dashboard, or a SaaS. Core evaluation happens in your repo, against your evidence.
- No API keys to buy. Core's required path needs no provider SDKs and no model keys. Live models are an optional, opt-in lane you own — not a toll on the core.
- No telemetry leaving your repo. Core collects nothing and sends nothing on its required path. Your datasets, traces, and scorecards stay where you put them.
Local-first means Core has no cost centre to monetise. That is why Core stays free — the commercial products fund the harder work around it.
The commercial products
Core is at version 0.2.1, tagged. EvalGlass Discovery (which finds the evaluations your application is missing) and EvalGlass Intelligence (which explains why a hard failure happened and makes the evaluation system learn) are separate commercial products — in private preview, and not part of the Apache-2.0 Core release. We would rather say where they are plainly than imply a maturity they do not have.
The commercial products are clearly separate, clearly optional, and never a gate on Core itself. Core stays Apache-2.0, and the open artifacts you generate stay yours. How the project sustains itself →
Apache-2.0 ships "as is"
The license comes with no warranty and no certification. EvalGlass Core measures what your evidence supports and reports only what it can honestly claim — it does not vouch for your application's correctness, and neither does its license.
Try it
There is nothing to sign up for. Install the plugin, point your agent at a repo, and let it vendor the source.
Evaluate my agentic app using EvalGlass.
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