ChatOpenAI
Prerequisite
Setup
Chat Models > drag ChatOpenAI node

Connect Credential > click Create New

Fill in the ChatOpenAI credential

Voila 🎉, you can now use ChatOpenAI node in Flowise

Custom base URL and headers
Flowise supports using custom base URL and headers for Chat OpenAI. Users can easily use integrations like OpenRouter, TogetherAI and others that support OpenAI API compatibility.
TogetherAI
Refer to official docs from TogetherAI
Create a new credential with TogetherAI API key
Click Additional Parameters on ChatOpenAI node.
Change the Base Path:

Open Router
Refer to official docs from OpenRouter
Create a new credential with OpenRouter API key
Click Additional Parameters on ChatOpenAI node
Change the Base Path and Base Options:

Custom Model
For models that are not supported on ChatOpenAI node, you can use ChatOpenAI Custom for that. This allow users to fill in model name such as mistralai/Mixtral-8x7B-Instruct-v0.1

Image Upload
You can also allow images to be uploaded and analyzed by LLM. Under the hood, Flowise will use OpenAI Vison model to process the image. Only works with LLMChain, Conversation Chain, ReAct Agent, and Conversational Agent.

From the chat interface, you will now see a new image upload button:


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