Introducing Mellum2: A 12B Mixture-of-Experts Model by JetBrains
Aug 13, 2026
Summary
This post introduces the Mellum2-12B-A2.5B-Thinking model by JetBrains, a 12B parameter Mixture-of-Experts model. It highlights the model's capabilities in text generation and its potential for handling extended contexts, building upon the existing support for long context window models.
More from the Long Context Window Models trail
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- DeepSeek-V4: a million-token context that agents can actually use
- Granite Embedding Multilingual R2: Open Apache 2.0 Multilingual Embeddings with 32K Context — Best Sub-100M Retrieval Quality
- Introducing NVIDIA Nemotron 3 Nano Omni: Long-Context Multimodal Intelligence for Documents, Audio and Video Agents
- Differential Transformer V2