> For the complete documentation index, see [llms.txt](https://project-44.gitbook.io/retell-ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://project-44.gitbook.io/retell-ai/test/llm-playground.md).

# LLM Playground

Learn how to effectively test and debug your AI agents using the LLM Playground

The LLM Playground provides a convenient environment for testing your AI agents without making actual web or phone calls. This interactive testing interface enables:

* Rapid prototyping and debugging of agent responses
* Testing different conversation scenarios
* Immediate feedback on agent behavior
* Faster development iterations

1

Access the LLM Playground

1. Navigate to your agent’s detail page
2. Click on the “Test LLM” tab
3. You’ll see the chat interface where you can start testing

![Screenshot of the LLM Playground interface](https://mintlify.s3.us-west-1.amazonaws.com/retellai/images/test.png)

LLM Playground Interface

2

Test Basic Conversations

1. Type your message in the input field
2. Observe the agent’s response

3

Test Function Calling

1. Use prompts that should trigger specific functions
2. Verify that functions are called with correct parameters

![Screenshot of the function calling test](https://mintlify.s3.us-west-1.amazonaws.com/retellai/images/p_1.png)4

Iterate and Refine

1. Monitor agent behavior and responses
2. Update prompts or functions as needed
3. Click the “delete” button to reset conversations
4. Test the updated behavior

![Screenshot of the iteration process](https://mintlify.s3.us-west-1.amazonaws.com/retellai/images/p_3.png)

Iterate and test

5

Save Test Cases

1. Click the “Save” button to store your test conversation
2. Add a descriptive name for the test case
3. Access saved tests from the agent detail page

![Screenshot of saving a test case](https://mintlify.s3.us-west-1.amazonaws.com/retellai/images/p_4.png)

Save test case

![Screenshot of saved test cases](https://mintlify.s3.us-west-1.amazonaws.com/retellai/images/p_2.png)

Saved test cases

6

Test Dynamic Variables

1. Use dynamic variables in your prompts
2. Verify that variables are properly interpolated
3. Test different variable values and scenarios

![Screenshot of dynamic variables](https://mintlify.s3.us-west-1.amazonaws.com/retellai/images/dynamic.png)

#### [​](https://docs.retellai.com/test/llm_playground#best-practices)Best Practices <a href="#best-practices" id="best-practices"></a>

* Start with simple conversations and gradually test more complex scenarios
* Save important test cases for regression testing
* Test edge cases and error handling
* Document unexpected behaviors for future reference


---

# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

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```

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