# Meta Details How It Builds and Tests Advanced AI as Evaluation Becomes the Bottleneck

A look inside the lab's evaluation and infrastructure practices comes as the field acknowledges that testing, not training, increasingly determines what can be deployed.

- Published: 2026-06-21T10:59:22.601Z
- Canonical: https://polylog.news/ai/2026-06-21/meta-details-how-it-builds-and-tests-advanced-ai-as-evaluati
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Meta AI](https://ai.meta.com/blog/scaling-how-we-build-test-advanced-ai/)

Meta has published an account of how it builds and tests advanced AI at scale, describing the infrastructure and evaluation practices behind its model releases. On its own, a lab process post is minor. Read against the rest of this edition,…

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