# Pricing — overview

Three tiers. Pricing is transparent — no sales call required for Free or Premium.

<table data-view="cards"><thead><tr><th></th><th></th><th></th></tr></thead><tbody><tr><td><strong>Free</strong></td><td>Free forever. Stratix Public + a Premium account with starter ECU.</td><td><a href="/pages/oTV95TQC71fcVNyUMaJs">Read</a></td></tr><tr><td><strong>Premium PAYG</strong></td><td>Pay-as-you-go on ECU. Multi-org, BYOK, agentic evals, GEPA, traces.</td><td><a href="/pages/ZIL4NM91ggdnrXwx0hkt">Read</a></td></tr><tr><td><strong>Enterprise</strong></td><td>Custom annual contract. SSO, data residency,, dedicated CSM.</td><td><a href="/pages/7FhrLLbP8h1hoWJTaCPO">Read</a></td></tr></tbody></table>

## At a glance

|                                              | Free        | Premium PAYG | Enterprise         |
| -------------------------------------------- | ----------- | ------------ | ------------------ |
| **Cost**                                     | $0          | ECU PAYG     | Custom             |
| **Stratix Public**                           | full        | full         | full               |
| **Stratix Premium**                          | starter ECU | full         | full               |
| **Multi-org**                                | 1 org       | yes          | yes                |
| **Team seats**                               | basic       | yes          | yes                |
| **Python SDK + CLI**                         | yes         | yes          | yes                |
| **BYOK custom models**                       | partial     | yes          | yes                |
| **Agentic evaluations**                      | starter     | full         | full               |
| **GEPA judge optimization**                  | partial     | full         | full               |
| **Trace evaluations**                        | starter     | full         | full               |
| **Notifications**                            | basic       | full         | full               |
| **In-app Assistant**                         | yes         | yes          | yes                |
| **Priority support**                         | community   | email        | dedicated CSM      |
| **SSO**                                      | —           | —            | yes                |
| **Data residency**                           | —           | —            | yes                |
| **Audit logs**                               | —           | basic        | extended retention |
| **Custom contractual terms (DPA, MSA, SLA)** | —           | —            | yes                |

## What is an ECU?

An **Evaluation Compute Unit** (ECU) is the billing unit for compute-intensive operations:

* Model inference during an evaluation
* Judge runs (LLM judges consume ECU)
* GEPA optimization runs
* Trace evaluation runs

Free tier ships with a starter ECU balance. Premium is pay-as-you-go: buy ECU when you need it. Enterprise has volume ECU pricing.

[Concept: ECU credits](/11.-admin/concepts-ecu-credits.md) covers the economics and how ECU is consumed.

## FAQ

**Do I need to pay to browse the public catalog?** No. `stratix.layerlens.ai` is free, anonymous, and unlimited.

**Can I use my own LLM provider key?** Yes. BYOK custom models are supported in Premium. Provider tokens consumed against your key don't count against ECU.

**Can I cancel?** Premium PAYG has no commitment. Enterprise contracts are negotiated annually.

**Is there a non-profit / academic discount?** Yes — email <sales@layerlens.ai>.

**What happens to my data if I downgrade?** Org data is preserved. You retain access to everything you've created; some Premium-only features become read-only.

## Where to next

* [Free tier details](/3.-pricing/free-tier-details.md)
* [Premium tier details](/3.-pricing/premium-tier-details.md)
* [Enterprise tier details](/3.-pricing/enterprise-tier-details.md)
* [How Stratix compares](/1.-introduction/how-stratix-compares-deep.md)
* [Industry patterns](/3.-pricing/03-pricing.md)


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