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

# Simulation

[Added in 2026.12](https://docs-classic.cognigy.com/release-notes/2026.12.md)

With *Simulation* mode, you can simulate conversations for your LLM-based AI Agents using [predefined scenarios](https://docs-classic.cognigy.com/ai/agents/test/simulator/overview). This mode allows you to test and debug your AI Agent's behavior in various situations without needing real user input.

## How to Use Simulation Mode

To open simulation mode, click the ![simulation](https://mintcdn.com/cognigy-docs-legacy/eGdkyf6N-EPpPKZA/_assets/icons/black-and-white/simulation.svg?fit=max\&auto=format\&n=eGdkyf6N-EPpPKZA\&q=85\&s=57ac89804e3e25c10fa9b24a9f902a5a) tab in the [Interaction Panel](https://docs-classic.cognigy.com/ai/agents/test/interaction-panel/overview), then select the scenario to run the simulation on.

The simulation of the selected scenario starts with the following predefined settings:

* The number of simulation runs is 1 and can't be changed.
* The simulation uses the [default LLM](https://docs-classic.cognigy.com/ai/agents/develop/gen-ai-and-llms/other-operations.md#set-a-model-as-default) selected on the **Large Language Models** page.

<video width="300" height="500" controls autoPlay title="Interaction Panel simulation mode demonstration" aria-label="The Interaction Panel showing exchanged messages during a simulation, then presenting the results.">
  <source src="https://docscognigyassets.blob.core.windows.net/assets/interaction-panel-simulator.mp4" />
</video>

## More Information

* [Simulator](https://docs-classic.cognigy.com/ai/agents/test/simulator/overview)
* [Interaction Panel](https://docs-classic.cognigy.com/ai/agents/test/interaction-panel/overview)


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