Pmfm.ai

How to Build a Custom GPT with Claude 3.7 Sonnet?

Learn how to create, launch, and monetize a custom Claude 3.7 Sonnet bot with Pmfm.ai

Published on: March 11, 2025 • 2 min read

Anthropic recently released Claude 3.7 Sonnet, their most intelligent model to date and the first hybrid reasoning model on the market. This new model brings exceptional capabilities and supports two modes, the regular mode, and the extended thinking mode.

While Claude 3.7 Sonnet is very impressive, creating a custom bot with it and sharing it with others (like Custom GPT on OpenAI) isn't straightforward.

Here's a simple solution using Pmfm.ai:

  1. Sign up on the platform

    Begin by creating your account on pmfm.ai

    Pmfm.ai signup page

  2. Create a new app

    Once you have signed up, click on the "Create App" button

    Dashboard with Create App button

  3. Select Claude

    Select Claude from the GPT builder app menu

    Model selection screen with Claude option

  4. Configure your bot

    Fill out the form choosing a name and image for your bot. Select the Claude 3.7 Sonnet model from the list of AI models that you want to use. You will then need to define a prompt for the bot and upload an image!

    Bot configuration form

  5. Create and launch

    Click on create app and that's all! It should be visible on the dashboard. Now, you can test it and launch it whenever you're ready! Once you've launched it, you can share the link with anyone!

The platform is free for the first 50 messages, after which you'll need a subscription to keep your app active. With Claude 3.7 Sonnet's improved capabilities and Pmfm.ai, you can create powerful AI applications for various use cases.