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MCLLM

MCLLM is a fork of MCChatGPT for players who want to use non-OpenAI LLM servers. You are not locked into OpenAI's service and can use alternatives like DeepSeek, Claude, Gemini, among others.

FabricNeoForgeForge
Loaders
FabricNeoForgeForge
Downloads on Modrinth
2.3K
Followers on Modrinth
2
versions
13
Updated
June 4, 2026Jun 4
Published
in 2025
Ask LLM · swipe

At a glance

Runs on Fabric, NeoForge and Forge
For Minecraft 1.21.11, 26.1.2 …
Client only — no need to install it on the server
Latest version — 1.4.0 from June 4, 2026
Requires Architectury API and Kotlin for Forge
License GPL-3.0-or-later — free
Where it's needed
In gamerequiredOn servernot needed

Install in the game only; not needed on the server

Game versions1.21.5, 1.21.11, 26.1.2 …

MCLLM

If you like this project, please consider giving it a ⭐ on GitHub!

This is a fork of MCChatGPT.
Unlike the original, the base URI is no longer hardcoded—you can now configure it via a file, making it compatible with nearly any LLM service, not just OpenAI.

How to Use

  1. Download the JAR file compatible with your Minecraft version from Modrinth or GitHub, and place it in your mods folder.
    (Make sure the appropriate mod loader is installed.)

  2. Download the required dependencies from the same source and also place them in the mods folder.
    (They are usually listed on the Modrinth.)

    • Supported platforms: Fabric (>= 1.20.1), Forge (1.19.4–1.20.1), and NeoForge (>= 1.21.1)
  3. Launch the game once to generate the configuration file.

  4. Open config/mcllm.json and edit the following fields:

    • baseurl: Set this to the endpoint of your preferred LLM service, e.g. https://api.deepseek.com/v1
    • model: Specify the model name, e.g. deepseek-chat
  5. Re-launch the game, then run:
    /mcllm-auth YourToken
    This securely stores your token (it will be encrypted in the config file).

  6. Use /ask YourQuestion to send a message to the LLM.
    The LLM’s reply will appear in your local chat—only you can see it.

example use

FAQ

How to install MCLLM?

Install Fabric for your Minecraft version, download MCLLM for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does MCLLM support?

MCLLM has builds for Minecraft 1.21.1, 1.21.5, 1.21.11, 26.1.2 ….

Is MCLLM needed on the server?

Client only — no need to install it on the server

License and source
GNU General Public License v3.0 or laterfree to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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