Mellum2.1-12B-A2.5B-Thinking

Model facts

Hub id

JetBrains/Mellum2.1-12B-A2.5B-Thinking

Likes

164

Downloads (last 30 days)

3,765

Task

Text generation

Library

transformers

Parameters

12.1B (12,149,923,072)

License

Apache 2.0 (apache-2.0)

Access

Open download

Author

JetBrains · Organization

Languages

en

Created

Sep 20, 2026

Last modified

Oct 7, 2026

Base model

• Fine-tuned from JetBrains/Mellum2-12B-A2.5B-Base (external site: huggingface.co)

Rank #2,699 of 4,320 models in AI on Hugging Face, by likes. Data from the Hugging Face Hub API, fetched Oct 18, 2026. Likes measure popularity, not quality or safety. Downloads are for the last 30 days, as the Hub reports them; counts change daily. A listing is not an endorsement. How this list is made

Listed models built on this one

Quantized versions, fine-tunes, adapters, and merges whose Hub base-model tags name this model.

• 3,509

  Rank 3,509: JetBrains/Mellum2.1-12B-A2.5B-Thinking-GGUF

  Quantized version of JetBrains/Mellum2.1-12B-A2.5B-Thinking

  123 likes122,022 downloads in the last 30 daysText generationApache 2.0

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• 3,509

  Rank 3,509: JetBrains/Mellum2.1-12B-A2.5B-Thinking-GGUF

  Quantized version of JetBrains/Mellum2.1-12B-A2.5B-Thinking

  123 likes122,022 downloads in the last 30 daysText generationApache 2.0