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

Text Generation12B9.4K190Updated Oct 7, 2026
Hugging Face

Downloads

9.4K

Likes

190

Last updated

Oct 7, 2026

License

apache-2.0

[!Note] Mellum2.1 is a thinking model. Use it for complex agentic tasks, such as working in a repository, running commands, and calling tools, and for hard non-agentic problems in coding, math, and reasoning.

Tasks & library

  • text generation
  • transformers

Tags

  • transformers
  • mellum
  • text-generation
  • conversational
  • en
  • model-index

Technical specifications

Parameters12B
Librarytransformers
Languagesen
Base modelJetBrains/Mellum2-12B-A2.5B-Base
Licenseapache-2.0