# brain

> The big card — the largest card in strata→signal's own hardware, the one with room
> to hold the biggest models we run. RuleSage, amble and RealKeep send their model
> calls to machines we own instead of a cloud service, and brain takes the jobs
> nothing else can fit: the harder reasoning, the longer thread, the answer worth
> getting exactly right rather than merely close. It runs the models that check other
> models' work. Day to day the smaller models answer and brain sits idle — the
> idleness is the design, not waste: nothing here stops working if brain is busy or
> offline. An upgrade the products can call on, never a dependency they're stuck
> with. Today it isn't a separate machine: the card is installed in the one box that
> currently runs everything we serve, and its own chassis is bought but not
> assembled. When the card moves, this page describes the same job and nothing that
> calls it has to change — the name travels with the role, not the metal.

## Elsewhere in the workshop

- [The whole family, mapped](https://strata2signal.com/family.html) · [the research index](https://research.strata2signal.com/llms.txt).
- [RuleSage](https://rulesage.strata2signal.com) · [amble](https://amble.strata2signal.com) · [RealKeep](https://realkeep.strata2signal.com) — the three live apps whose model calls land here.
- [keel](https://keel.strata2signal.com) · [Kiln](https://kiln.strata2signal.com) · [memory](https://memory.strata2signal.com) · [easel](https://easel.strata2signal.com) · [forge](https://forge.strata2signal.com) — the rest of the machines and tools.
- Say hello: [strata2signal.com/contact](https://strata2signal.com/contact/) or hello@strata2signal.com.

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