Mellum 2
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Overview
12B mixture-of-experts coding model with 2.5B active parameters, trained from scratch by a small team using a three-stage curriculum over...
Details
- Vendor
- JetBrains
- Type
- Code LLM
- Release year
- 2026
- Jurisdiction
- Czech Republic
- CEO
- Kirill Skrygan
- Deployment
- Open weights (Hugging Face) + CoreWeave Inference
- Open source
- Yes
- Free tier
- Yes
- Stock status
- Private
- X
- @jetbrains
Known safety issues
None publicly documented
AIDb Rating
AIDb v2.0 (curated): Capability 5/10 · Currency 10/10 · Access 8/10 · Significance 4/10 → 6.30
Last verified 2026-08-09 · Primary source ↗
Cite this
“Mellum 2.” AIDb — The AI Database. Verified 2026-08-09. https://theaidatabase.com/m/jetbrains-mellum-2.html