# Use Parallel with Baseten

Ground open-source models on Baseten with Parallel web search through Baseten Hosted Tools.

Use Parallel on Baseten[Use Parallel on Baseten]Get an API key[Get an API key]

## What you can do

- Ground open-source model responses in current web data without client-side orchestration.
- Let a hosted model decide when to search and iterate until it is confident in the answer.

## How it works

Baseten Hosted Tools runs web search server-side inside the Baseten Inference Stack, with Parallel as a selectable provider for Baseten Grounded Inference.

Add the Parallel web-search tool to a standard Messages, Chat Completions, or Responses request and Baseten interleaves model inference with Parallel search in a server-side loop, streaming tool-use progress until the model produces a grounded response.

## Set up in three steps

1. Enable Hosted Tools on a Baseten Model APIs request with the server-tools header.
2. Add the Parallel web-search tool to the request's tools array and optionally tune tool settings such as the iteration budget.
3. Send a test request and verify the streamed tool-use blocks and the grounded final response.

Use Parallel on Baseten[Use Parallel on Baseten]