The design engineer inside Revit and AutoCAD.

Describe what is to be built. Splendit draws, calculates and checks in your model – architecture, structure, HVAC and plumbing, electrical, fire, sprinklers and accessibility.

Requires Revit or AutoCAD, Claude Code or Codex, and your own paid AI subscription.

Seven disciplines, one model

Splendit works like an entire design team in the same file, in the right order, and makes sure the disciplines agree with each other.

All disciplines

Knowledge that grows

Rules and recipes written by architects, reference libraries read when exact values are needed, and lessons from projects already done.

How Splendit knows what it knows

You decide

Ask mode to only analyse. Three levels of approval when it is to build. Checkpoints make everything reversible.

Safety and approvals

Your programs. Your AI.

Splendit works in Revit and AutoCAD 2025, 2026 and 2027 and connects to Claude Code or Codex on your computer. Your paid AI subscription is purchased separately. Your models and prompts go directly to your provider, never to us.

AI software and a subscription are required

You need your own paid AI subscription and at least one of the AI engines on your computer. The subscription is purchased separately and the provider’s usage limits apply.

Claude

Claude Pro or Max, with Claude Code installed and signed in on your computer.

Install Claude Code
Download the Claude app
Claude subscriptions

ChatGPT and Codex

ChatGPT Plus or Pro, with Codex installed and signed in on your computer.

Install Codex
Download the ChatGPT app
ChatGPT subscriptions

Splendit Setup helps you with installation and sign-in.

The Claude and ChatGPT apps are optional; Splendit connects to Claude Code or Codex.

AI rendering requires Codex and a signed-in ChatGPT account, even when you use Claude in chat.

72 hours with the whole team in your model.

A trial key gives your company three days from first activation. No card, no automatic conversion.