Does AutoCAD LT support AutoLISP?

Yes, since AutoCAD LT 2024 for Windows. Earlier LT releases and AutoCAD LT for Mac do not.

Does cadssistant work in AutoCAD LT?

Not yet. The plug-in installs, but LT doesn't run the JavaScript that opens the palette. It works in AutoCAD 2024 and newer, including the industry toolsets.

How much does an AI assistant for AutoCAD LT cost?

AutoLISP from a chatbot costs nothing beyond the chatbot. The open-source autocad-mcp is free but needs Claude Desktop or Claude Code, which come with a Claude plan.

Guides

Is there an AI assistant for AutoCAD LT?

Not inside LT itself, as of 2026. LT has no .NET or COM API, so most AutoCAD AI add-ins, which are .NET plug-ins, do not load in it, and AI palettes that run on the AutoCAD JavaScript API, cadssistant included, don't open in it either. What does work in AutoCAD LT 2024 and newer on Windows is AutoLISP: a chatbot can write a routine for you to load, and the open-source autocad-mcp server drives LT through AutoLISP for Claude Desktop. AutoCAD LT 2023 and older, and LT for Mac, have no AutoLISP.

Checked 2026-10-24

Why AI plug-ins skip AutoCAD LT

Full AutoCAD loads add-ins written against its .NET and COM APIs, and that is how most AI add-ins are built. LT does not load them: Muhandis, for example, states that AutoCAD LT cannot load .NET add-ins, and AEC Pilot lists AutoCAD and Civil 3D only.

In-drawing palettes such as cadssistant are web apps hosted through the AutoCAD JavaScript API. In our test on AutoCAD LT 2027, LT downloaded the palette's loader script but never ran it, so the palette cannot open there. Since 2024 LT for Windows does run AutoLISP, so anything that works through AutoLISP alone runs in LT.

What works in AutoCAD LT today

A chatbot writes AutoLISP, you load it: free with any chatbot, works in LT 2024+, but the chatbot cannot see your drawing. See Can ChatGPT control AutoCAD?.
autocad-mcp: an open-source MCP server that drives AutoCAD LT 2024+ through AutoLISP, for Claude Desktop or Claude Code. Free, but you need a Claude plan and some setup.
An assistant inside the drawing: needs full AutoCAD. cadssistant works in AutoCAD 2024 and newer, including the industry toolsets. See AI assistants for AutoCAD.

Questions

Does AutoCAD LT support AutoLISP?: Yes, since AutoCAD LT 2024 for Windows. Earlier LT releases and AutoCAD LT for Mac do not.
Does cadssistant work in AutoCAD LT?: Not yet. The plug-in installs, but LT doesn't run the JavaScript that opens the palette. It works in AutoCAD 2024 and newer, including the industry toolsets.
How much does an AI assistant for AutoCAD LT cost?: AutoLISP from a chatbot costs nothing beyond the chatbot. The open-source autocad-mcp is free but needs Claude Desktop or Claude Code, which come with a Claude plan.

Command: CADSSISTANT

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