
Modrinth · Minecraft mod
BuildGPT
A simple mod that uses ChatGPT to generate structures on command with /buildgpt
Quick answer
Which BuildGPT release matches 26.2 Fabric?
BuildGPT 1.1.0-26.x targets 26.1, 26.1.1, 26.1.2 with Fabric, Quilt. Do not install it on the client. It must be installed on the dedicated server. No extra mods listed for this file.
Where it goes
Is BuildGPT required on the client, server, or both?
Do not install it on the client. It must be installed on the dedicated server.
This file is marked server-only.
What else does BuildGPT 1.1.0-26.x need?
1.1.0-26.x on 26.2 Fabric. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add BuildGPT without breaking your instance.
Built for BuildGPT 1.1.0-26.x on 26.2 Fabric. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.1.0-26.x. It targets 26.1, 26.1.1, 26.1.2 with Fabric, Quilt; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Do not install it on the client. It must be installed on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.1.0-26.x. It opens that exact file at the source.
About this project
What does BuildGPT add?
This mod adds a /buildgpt command that allows the player to place AI generated structures into the world with a customizable prompt.
Setup
An OpenAI Key is required for this mod in order to work.
create a file .openaikey in the config folder or run the /buildbpt command with valid parameters once to generate the file and then place your API Key in there.
The command should now work!
Additionally The API Key requires account credits on OpenAI!
Command
The command has 2 modes:
Bound
/buildgpt bound <x> <y> <z> <x> <y> <z> <prompt>
This mode allows the user to set a bounding box outside of which the mod won't place any blocks.
The prompt is directing ChatGPT to generate a structure within those bounds but the mod also has a check after the response, that filters out any blocks outside the bounding box.
Unbound
/buildgpt unbound <x> <y> <z> <prompt>
This mode only has a starting point from which the AI will (in most cases) generate the structure towards increasing coordinates.
Of course this is not always the case as ChatGPT can sometimes return funny responses with unexpected behaviour, which is why the bound mode exists and the unbound mode should by used with caution, since placed blocks cannot be undone. During testing, I noticed that structures will usually not exceed a 20x20x20 block cube unless prompted to do otherwhise.
Prompt
There is a predefined prompt in the Mod, meaning that the user is only required to input the building name or description into the <prompt> field of the command, since the mod requires the response to be formatted a certain way.
The prompt can also be overwritten by inputting a custom prompt into the <prompt> field of the command.
Project description from Modrinth.
Pick your setup
BuildGPT by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
2 loader builds26.1.1
2 loader builds26.1
2 loader builds1.21.11
2 loader builds1.21.10
2 loader builds1.21.9
2 loader builds1.21.8
2 loader builds1.21.7
2 loader builds1.21.6
2 loader builds1.21.5
2 loader builds1.21.4
2 loader buildsShowing the newest 12 of 32 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
BuildGPT versions and loaders
1.1.0-26.x
buildgpt-1.1.0-26.x.jar
12 Apr 2026
Looking for an older file? The official Modrinth project page is in Resources.