Illcalibour's AI Chat
by Illcalibour
Illcalibour's AI Chat lets players talk to a local AI model from inside Minecraft, with a trigger word starting each prompt.
What it does
Players write a message that begins with a configurable trigger such as "Hey AI" or "KI mach", and the mod sends the remaining text as a prompt to an AI backend running on the same machine. The reply is posted back into the chat. The default backend is Ollama, and the default model is qwen2.5:3b, which the author recommends. Ollama has to be running locally before the mod can answer.
The mod can be turned on and off, and its trigger prefixes, model and behavior are set in-game through Mod Menu and Cloth Config. Two options decide where messages appear: a block trigger message can be sent to chat, and AI replies can be shared with the whole server chat or kept private. The mod is published for Fabric only, across 4 release versions, 1.21.8 – 1.21.11, and requires Java 21. It is a client mod, so servers need nothing installed. The code is released under the MIT License, but the project is not open source.
Key features
Configurable trigger prefixes
The words that start an AI prompt can be changed, so players can use phrases in their own language.
Local model through Ollama
Prompts go to a model running on the player's own machine, with the default model set to qwen2.5:3b.
Shared or private replies
An option sends AI replies to the server chat where other players can see them, or keeps them local.
Toggle and in-game settings
The AI feature can be switched off, and triggers, model and behavior are adjusted through Mod Menu and Cloth Config.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who run Ollama on their own computer and want a chat assistant inside Minecraft, and players on Fabric who are comfortable installing a local model.
How it compares
Cassiopeia is a Fabric client mod for 1.21.5 – 1.21.11 under All rights reserved, which is not open source and covers a similar version range. Viper LLM runs on the server side only, and its Fabric files cover 1.21 – 26.3, so players join without installing it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Illcalibour's AI Chat | Fabric | 1.21.8 – 1.21.11 | Client-side only | 2026-04-03 |
| Cassiopeia | Fabric | 1.21.5 – 1.21.11 | Client-side only | 2026-06-06 |
| Viper LLM | Fabric | 1.21 – 26.3 | Server-side only | 2026-09-29 |
Questions
Does Illcalibour's AI Chat need Ollama?
Does the mod work on versions older than 1.21.8?
In the catalog
Illcalibour's AI Chat is one of 2,135 Minigame mods on ModsFinder, and one of 1,454 Minigame mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
Illcalibour's AI Chat is a Fabric client mod for Minecraft 1.21.8 that adds an AI chatbot to in-game chat using a local Ollama model (default: qwen2.5:3b). When you send a trigger message (for example Hey AI...), the mod sends the prompt to your local AI backend and posts the response in chat. By default, AI replies…
Official listing
- Modrinth page
- modrinth.com/mod/illcalibours-ai-chat
- Owner
- Illcalibour
- Published
- 2026-04-03
- Updated on Modrinth
- 2026-04-03
- Facts verified
- 2026-10-15