# Model Test Page

## Overview

A sandbox for testing any model via the configured gateway proxy. The page lets a user select one model, then renders a category-specific tester (`language`, `embedding`, `reranker`).

## Route

`/utilities/testing/model`

Optional query parameter `?model=<modelId>` pre-selects the model on load.

The selected model determines which tester is shown:

- language: chat tester
- embedding: embedding tester
- reranker: rerank tester

## Model Selector

The selected model is shown in the top selector button (icon + name). If no model is selected, the page shows a placeholder prompt to select a model.

## Language Mode (Chat)

Behavior:

- Sends `POST /api/workspaces/[workspaceId]/models/[id]/test` with `{ messages, parameters }`.
- Assistant output is streamed and rendered incrementally.
- While request is in-flight, Send becomes Stop and cancels via `AbortController`.
- `Clear session` resets thread, system prompt, errors, and parameter values.

## Embedding Mode

Behavior:

- Sends `POST /api/workspaces/[workspaceId]/models/[id]/test` with a plain string body.
- UI shows latency, dimensions, token usage, and raw vector data.

## Reranker Mode

Behavior:

- Sends `POST /api/workspaces/[workspaceId]/models/[id]/test` with `{ query, documents }`.
- UI displays sorted documents by relevance score and latency/token usage metadata.

## API Behavior

The test endpoint routes requests by model category and returns category-appropriate responses:

- language: streaming chat response
- embedding: embedding result with metadata
- reranker: ranked documents with metadata