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

# UI Guide

> Access W&B Inference models through the web interface


Learn how to use the W\&B Inference service through the web UI. Before using the UI, complete the [prerequisites](/inference/prerequisites/).

## Access the Inference service

You can access the Inference service from three places:

### Direct link

Navigate to [https://wandb.ai/inference](https://wandb.ai/inference).

### From the Inference tab

1. Navigate to your W\&B account at [https://wandb.ai/](https://wandb.ai/)
2. Select **Inference** from the left sidebar
3. A page displays with available models and model information

<Frame>
  <img src="https://mintcdn.com/wb-21fd5541/mVjDwbx0mC8gYx-b/images/inference/inference-playground-single.png?fit=max&auto=format&n=mVjDwbx0mC8gYx-b&q=85&s=52d5a73d3169c9afc8dd2a22d3c57e26" alt="Using an Inference model in the Playground" width="2334" height="1062" data-path="images/inference/inference-playground-single.png" />
</Frame>

### From the Playground tab

1. Select **Playground** from the left sidebar. The Playground chat UI appears
2. Hover over **W\&B Inference** in the LLM dropdown list. A dropdown with available models appears on the right
3. From the models dropdown, you can:
   * Click any model name to [try it in the Playground](#try-a-model-in-the-playground)
   * [Compare multiple models](#compare-multiple-models)

<Frame>
  <img src="https://mintcdn.com/wb-21fd5541/mVjDwbx0mC8gYx-b/images/inference/inference-playground.png?fit=max&auto=format&n=mVjDwbx0mC8gYx-b&q=85&s=0e64187e4d455209a9fc5f46a81f753a" alt="The Inference models dropdown in Playground" width="3022" height="1240" data-path="images/inference/inference-playground.png" />
</Frame>

## Try a model in the Playground

After [selecting a model](#access-the-inference-service), you can test it in the Playground. Available actions include:

* [Customize model settings and parameters](/weave/guides/tools/playground#customize-playground-settings)
* [Add, retry, edit, and delete messages](/weave/guides/tools/playground#message-controls)
* [Save and reuse a model with custom settings](/weave/guides/tools/playground#saved-models)
* [Compare multiple models](#compare-multiple-models)

## Compare multiple models

You can compare Inference models side by side in the Playground. Access the Compare view from two places:

### From the Inference tab

1. Select **Inference** from the left sidebar. The available models page appears
2. Click anywhere on a model card (except the model name) to select it. The card border turns blue
3. Repeat for each model you want to compare
4. Click **Compare N models in the Playground** on any selected card. `N` shows the number of models selected
5. The comparison view opens

Now you can compare models and use all features from [Try a model in the Playground](#try-a-model-in-the-playground).

<Frame>
  <img src="https://mintcdn.com/wb-21fd5541/mVjDwbx0mC8gYx-b/images/inference/inference-playground-compare.png?fit=max&auto=format&n=mVjDwbx0mC8gYx-b&q=85&s=8c1e2bdeccd3a0b76381563e14bc83ee" alt="Select multiple models to compare in Playground" width="2114" height="1240" data-path="images/inference/inference-playground-compare.png" />
</Frame>

### From the Playground tab

1. Select **Playground** from the left sidebar. The Playground chat UI appears
2. Hover over **W\&B Inference** in the LLM dropdown list. The models dropdown appears on the right
3. Select **Compare** from the dropdown. The **Inference** tab appears
4. Click anywhere on a model card (except the model name) to select it. The card border turns blue
5. Repeat for each model you want to compare
6. Click **Compare N models in the Playground** on any selected card. The comparison view opens

Now you can compare models and use all features from [Try a model in the Playground](#try-a-model-in-the-playground).

## View billing and usage information

Organization admins can track credit balance, usage history, and upcoming bills from the W\&B UI:

1. Navigate to the W\&B **Billing** page in the UI
2. Find the Inference billing information card in the bottom right corner
3. From here you can:
   * Click **View usage** to see your usage over time
   * View upcoming inference charges (for paid plans)

<Tip>
  Visit the [Inference pricing page](https://wandb.ai/site/pricing/inference) for per-model pricing details.
</Tip>

## Next steps

* Review [available models](/inference/models) to find the best one for your needs
* Try the [API](/inference/api-reference/) for programmatic access
* See [usage examples](/inference/examples/) for code samples