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dify-docs/en/guides/application-orchestrate/multiple-llms-debugging.mdx
2025-07-16 16:42:34 +08:00

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---
title: Multiple Model Debugging
---
The **Chatbot** application supports the **“Debug as Multiple Models”** feature, allowing you to simultaneously compare how different models respond to the same question.
![](https://assets-docs.dify.ai/2025/02/6b77275258e6d48a540251beed0d16f3.png)
You can add up to **4** large language models at once.
![](https://assets-docs.dify.ai/2025/02/226b016ca72a7a914fe94f8b804d1334.png)
During debugging, if you find a model that performs well, click **“Debug as Single Model”** to switch to a dedicated preview window for the model.
![](https://assets-docs.dify.ai/2025/02/d273dee2ec4c04f7208a4f7a8b3a86db.png)
## FAQ
### 1. Why aren't additional models visible when adding LLMs?
Go to [“Model Providers”](/guides/model-configuration), and follow the instructions to add the keys for multiple models manually.
### 2. How to exit Multiple Model Debugging mode?
Select any model and click **“Debug with a Single Model”** to exit multiple model debugging mode.
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