autogen/dotnet/website/tutorial/Image-chat-with-agent.md

This tutorial shows how to perform image chat with an agent using the @AutoGen.OpenAI.OpenAIChatAgent as an example.

Note

To chat image with an agent, the model behind the agent needs to support image input. Here is a partial list of models that support image input:

• gpt-4o
• gemini-1.5
• llava
• claude-3
• ...

In this example, we are using the gpt-4o model as the backend model for the agent.

Note

The complete code example can be found in Image_Chat_With_Agent.cs

Step 1: Install AutoGen

First, install the AutoGen package using the following command:

dotnet add package AutoGen

Step 2: Add Using Statements

[!code-csharpUsing Statements]

Step 3: Create an @AutoGen.OpenAI.OpenAIChatAgent

[!code-csharpCreate an OpenAIChatAgent]

Step 4: Prepare Image Message

In AutoGen, you can create an image message using either @AutoGen.Core.ImageMessage or @AutoGen.Core.MultiModalMessage. The @AutoGen.Core.ImageMessage takes a single image as input, whereas the @AutoGen.Core.MultiModalMessage allows you to pass multiple modalities like text or image.

Here is how to create an image message using @AutoGen.Core.ImageMessage: [!code-csharpCreate Image Message]

Here is how to create a multimodal message using @AutoGen.Core.MultiModalMessage: [!code-csharpCreate MultiModal Message]

Step 5: Generate Response

To generate response, you can use one of the overloaded methods of @AutoGen.Core.AgentExtension.SendAsync* method. The following code shows how to generate response with an image message:

[!code-csharpGenerate Response]

Further Reading

• Image chat with gemini
• Image chat with llava