---
title: Mellum2.1 Thinking
emoji: 🧠
colorFrom: purple
colorTo: pink
sdk: static
app_file: index.html
short_description: Chat with JetBrains Mellum2.1 12B-A2.5B Thinking
models:
  - JetBrains/Mellum2.1-12B-A2.5B-Thinking
license: apache-2.0
---

Streaming chat demo for [JetBrains/Mellum2.1-12B-A2.5B-Thinking](https://huggingface.co/JetBrains/Mellum2.1-12B-A2.5B-Thinking),
a 12B mixture-of-experts reasoning model (2.5B active) for coding, math and agentic tasks. Runs on ZeroGPU.