> For the complete documentation index, see [llms.txt](https://docs.layerlens.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.layerlens.ai/1.-introduction.md).

# 1. Introduction

- [What is LayerLens Stratix?](https://docs.layerlens.ai/1.-introduction/what-is-layerlens-stratix.md): LayerLens Stratix is the AI evaluation platform — public catalog, private workspace, and SDK.
- [Overview](https://docs.layerlens.ai/1.-introduction/01-introduction.md): Overview of LayerLens Stratix — three experiences, the workflow spine, what's in the platform.
- [Why evaluate?](https://docs.layerlens.ai/1.-introduction/why-evaluate.md): Why AI teams need evaluation discipline — the cost of shipping unmeasured AI.
- [Personas and paths](https://docs.layerlens.ai/1.-introduction/personas-paths.md): Five personas, five paths — Builder, Operator, Researcher, Admin, Buyer.
- [Three experiences (Public · Premium · SDK)](https://docs.layerlens.ai/1.-introduction/three-experiences.md): Stratix Public, Stratix Premium, and the Python SDK — what each one is for and how they work together.
- [Public vs Premium — by user intent](https://docs.layerlens.ai/1.-introduction/public-vs-premium-by-intent.md): Public vs Premium organized by user intent — Select, Build / Instrument, Observe, Evaluate, Improve, Govern.
- [The Stratix Workflow — the six intents](https://docs.layerlens.ai/1.-introduction/the-stratix-workflow.md): The Stratix Workflow — six stages from picking a model to governing it in production.
- [How Stratix compares](https://docs.layerlens.ai/1.-introduction/how-stratix-compares.md): Stratix vs Braintrust, LangSmith, Galileo, Promptfoo, Arize — the short version.
- [Deep comparison](https://docs.layerlens.ai/1.-introduction/how-stratix-compares-deep.md): Stratix vs Braintrust, LangSmith, Galileo, Promptfoo, Arize — feature-by-feature comparison.


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