> ## Documentation Index
> Fetch the complete documentation index at: https://docs.frayme.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Nodes: AI Node and Subflow

> LLM analysis inside a flow, and running a callable flow as child cases.

## AI Node

* **Model** — the models available to your tenant; the hint links to **Settings → AI** where a manager can bring your own Anthropic key.
* **System Prompt** and **Prompt** — use `{{variable}}` to interpolate case data.
* **Output Format** — **Text** or **Structured JSON**; with JSON, declare **Output Fields**.
* **Temperature**, **Max Retries**, and **Attach documents** to pass images (for example `vars.kyc.document_images`).

Results land under **Output variable** and surface to analysts in the **Customer context** card.

## Where the model runs

By default AI nodes run on Frayme's account. A tenant admin can supply an Anthropic key in **Settings → AI**; the node then bills to that key. Case analysis in the risk engine always runs on Frayme's account.

## Sub-Flow

Runs a flow marked **Callable as subflow** as one or more **child cases** and waits for them.

* **Callable workflow** — which flow to run.
* **Fan out over** — an array expression (for example `input.ubos`) to create one child per element; **Child ID** identifies each.
* **Child role in parent** — **Ultimate Beneficial Owner**, **Owner**, **Legal Representative**, none, or an expression. Analysts see it on the child.
* **Pass data to the child** — maps the child's inputs.
* **Output variable** — where the children's outputs are collected.

## Fan out and child subjects

Under **Advanced**, choose how each child's subject is built (from mapped fields or the related party), its **Kind** (**Person** or **Business**) and display fields.

## Advanced

**Timeout (seconds)** with **On timeout** (**Partial** folds what finished and marks the rest unresolved; **Fail** errors the parent). Re-entry controls decide what happens when the parent runs the Subflow again: **On each pass**, **When an element disappears** (cancel or keep its child case) and **Max cases per element**.

## Sub-Flow (start) and (wait)

On save the builder compiles a Subflow into a start and a wait step. If a flow is loaded with them expanded, their panels are read-only: edit through the Subflow node.