Mellum 2
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A to Z
- A · App
- No
- B · Built By
- JetBrains
- C · CEO & Politics
- Kirill Skrygan — No public partisan activity documented
- D · Date
- 2026
- E · Expertise
- Intermediate+
- F · Free Tier
- Yes
- G · Generates
- Text only
- H · Deployment
- Open weights (Hugging Face) + CoreWeave Inference
- I · Inputs
- Text
- J · Jurisdiction
- Czech Republic
- K · Key Staffers
- Kris Kang (Head of Product for AI)
- L · Languages
- English-primary
- M · Model Type
- Code LLM
- N · Safety Issues
- None reported
- O · Open Source
- Yes — open weights
- P · Pricing
- Free (open weights, Apache 2.0 license)
- Q · AIDb Rating
- 6/10 · AIDb v2.0 (curated): Capability 5/10 · Currency 10/10 · Access 8/10 · Significance 4/10 → 6.30
- R · What Makes It Special
- 12B mixture-of-experts coding model with 2.5B active parameters, trained from scratch by a small team using a three-stage curriculum over 10T tokens — an IDE company converting years of developer-workflow context into model advantage.
- S · Stock / Status
- Private
- T · Training Cutoff
- [UNKNOWN]
- U · Users
- [UNKNOWN]
- V · Voice Chat
- No
- W · Weights
- Downloadable
- X · X Handle
- @jetbrains
- Y · Year Founded
- [UNKNOWN]
- Z · Bottom Line
- Open-weights Code LLM from JetBrains, released 2026.
Data completeness 88% · 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