Sustainability
Core stays free. Commercial products fund the harder work around it.
EvalGlass Core is open source, local-first, and pre-alpha — and it stays free. The harder work around it is funded by two separate commercial products, Discovery and Intelligence. You do not pay for permission to use Core; the family funds it, not the other way round.
Where it stands today
EvalGlass Core is pre-alpha software at version 0.2.1, tagged. It is maintained by Syntelesis-Lab and licensed under Apache-2.0.
Core itself bills nobody: it collects no telemetry, runs no hosted platform on its required path, and asks for no provider keys — your evaluation is never metered. The commercial products, Discovery and Intelligence, are separate and in private preview; they are how the work is funded, explained below.
Why local-first lowers the bar
Core runs on your machine and in your CI. There are no servers to keep running on the project's behalf.
That is a deliberate design choice, not a cost-saving accident. Because nothing is hosted, the project needs no recurring revenue just to stay online. A tool that runs entirely from vendored source in your repo does not switch off when a bill goes unpaid — it keeps working as long as your machine and your CI do.
How the commercial products fund Core
EvalGlass is built by Syntelesis-Lab, a multi-agent AI-safety lab — the same people who care that an evaluation never claims more than it measured. Core stays free and open. The two commercial products are what fund the harder work around it:
- EvalGlass Discovery funds evaluation-discovery automation — reading a bounded representation of your application and proposing the evaluations it is missing. Private preview.
- EvalGlass Intelligence funds the causal diagnosis of hard failures and the evaluation learning behind it — understanding why a consequential failure happened and turning it into a durable evaluation. Private preview.
Two boundaries hold, always: paid customers do not buy permission to use Core, and adopting a paid product does not change Core's licence or its local independence; and the open artifacts a paid product generates remain customer-controlled — the product that creates evidence never owns your decision or your evidence. This page is about why Core stays free and how it is funded, not how much anything costs.
Core's commitments, as commitments
These are not lines about the current version — they are commitments about what Core will always be:
- Apache-2.0, no account. Core is licensed under Apache-2.0 and needs no account to install or run.
- Useful without the company. The vendored runtime keeps working with the plugin, the maintainers, and Syntelesis-Lab gone — Core does not depend on us to run.
- No paywall on trust-critical semantics. Verdicts, the scorecard schema, and the epistemic/authority model are never behind a paywall. Honest measurement is the whole point; it cannot sit behind a subscription.
- Best-effort community support. Issues and discussion are best-effort. Paid support is part of the commercial products — never a gate on Core.
Core stays free because the family funds it — not the other way round.
You never pay for permission to use Core, and the open artifacts you generate stay yours. What each commercial product costs is a separate question, answered on Pricing once a real offer is ready. This page is only about why Core stays free.
How to help now
These are free, real, and useful today.
- Use it. Run it on your own agentic app and see what it can honestly claim.
- File issues. Report what breaks or what's unclear. Open an issue →
- Contribute. Send a change through the contributor workflow. How to contribute →
- Propose an ADR. Help shape a hard-to-reverse decision with an Architecture Decision Record. Read CONTRIBUTING.md →
Last updated: 6 June 2026.
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