Quickstart

Prerequisites

• Python 3.10 to 3.12 installed
• pip, uv, or pipx installed
• Before installing Langflow, we recommend creating a virtual environment to isolate your Python dependencies with venv, uv, or conda

Create the basic prompting flow

1. From the Langflow dashboard, click New Flow.

2. Select Basic Prompting.

3. The Basic Prompting flow is created.

This flow allows you to chat with the OpenAI component through the Prompt component.

4. To examine the flow's Prompt component, click on the Template field of the Prompt component.

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Answer the user as if you were a pirate.

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User: {user_input}

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Answer:

The Template instructs the LLM to accept {user_input} and Answer the user as if you were a pirate..

5. To create an environment variable for the OpenAI component, in the OpenAI API Key field, click the Globe button, and then click Add New Variable.

   1. In the Variable Name field, enter openai_api_key.
   2. In the Value field, paste your OpenAI API Key (sk-...).
   3. Click Save Variable.

Run the Basic Prompting flow

1. To open the Playground pane, click Playground. This is where you can interact with your AI.
2. Type a message and press Enter. The bot should respond in a markedly piratical manner!

Modify the prompt for a different result

1. To modify your prompt results, in the Prompt template, click the Template field. The Edit Prompt window opens.
2. Change Answer the user as if you were a pirate to a different character, perhaps Answer the user as if you were Hermione Granger.
3. Run the workflow again. The response will be very different.

Next steps

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Well done! You've built your first prompt in Langflow. 🎉

By dragging Langflow components to your workspace, you can create all sorts of interesting behaviors. Here are a couple of examples:

• Memory Chatbot
• Blog Writer
• Document QA