Blog

Choosing an AI brain for imCAD: Claude or ChatGPT?

imCAD runs on your own AI account. Which plan you need, how to set it up, and how to switch.

By imCAD

imCAD connects AI and SOLIDWORKS: understanding your request and planning is the "AI brain", modeling in SOLIDWORKS is imCAD. For now, the AI brain is your own account.

Two options

  • Claude (by Anthropic), running through Claude Code.
  • ChatGPT (by OpenAI), running through Codex.

Both can do everything imCAD does: parts, assemblies, drawings, background tasks. If you already pay for one of them, just use that.

Which plan you need

  • Claude: the Pro or Max plan.
  • ChatGPT: Plus or above (Plus, Pro, Business).

You pay for the AI directly to Anthropic or OpenAI, not through imCAD. Usage limits follow your AI plan.

Install and sign in

  1. When running the imCAD installer, tick Install Claude Code and / or Install Codex CLI.
  2. Open the app, go to Settings › AI brain, click Sign in.
  3. Your browser opens Anthropic or OpenAI for you to confirm. Then it shows Ready.

Your AI account password is entered on Anthropic's / OpenAI's own page; imCAD never receives or stores it.

What if you have both

Install both and pick the brain you want right in the app. Handy when one account hits its usage limit.

No AI account

imCAD API is in development: buy credits and go, no separate AI account needed. Follow the Blog to hear when it is ready.

Next step

You have the idea.
imCAD builds it.

Create an account and verify your email to get a full-featured 7-day trial and download the installer right away.