JetBrains
2 models across 2 families · Latest: Mellum2 12B (2026-06)
Developer tools company building code-specialized Mellum models.
JetBrains's portfolio covers 2 active models across 2 current families, spanning coding, rag, and agents. Open a model detail page to compare provider routes and sourced benchmarks.
Covers 5 workload areas across 2 active tracked models; last verified 2026-06-29.
Use it for
- Teams evaluating coding, rag, and agents across this lab's releases
- Comparing model families before committing to a flagship
- Migration and pricing follow-ups across 2 tracked models
Do not use it for
- Choosing a hosting provider without opening a model page for price ladders
Active models
2
Current models from this lab, excluding deprecated ones
Active families
2
Current model families from this lab
Open catalog
2 open
2 open source / 0 open weights
Lowest output price
Not tracked
No provider output pricing linked yet
Latest dated release
2026-06-01
Mellum2 12B
Freshness
2026-06-29
Researched 17d ago
Information
Release cadence
Showing 2 recent dated releases (full timeline below). Latest: Mellum2 12B (2026-06-01).
Where this lab wins
- Coding: 2 tracked models with SWE-bench / HumanEval-style scores.
- RAG: 1 tracked model with ruler / needle retrieval benchmarks.
- Agentic: 1 tracked model with BFCL, tau-bench, and SWE-bench tool-use coverage.
- Long-context: 1 tracked model with context-token or InfiniteBench-class signal.
Flagship quality / price signal
Flagship: Mellum 4B (best sourced coding quality-per-dollar in this portfolio).
Quality-per-dollar unavailable for this flagship — benchmark coverage or output token pricing is still missing.
JetBrains is an AI research organization founded in 2000. Developer tools company building code-specialized Mellum models. JetBrains ships 2 model families totaling 2 models, with the most recent release Mellum2 12B in 2026-06. Notable families include Mellum 2 and Mellum. Use it as a stable reference for lab background, release coverage, and follow-up model pages as they are added. Researchers and evaluators. View official API endpoints, benchmark performance, and coding/agent fit for every JetBrains model.
About
JetBrains is the software tools company behind IntelliJ IDEA, PyCharm, WebStorm, Kotlin, and JetBrains AI. Its Mellum model line focuses on code-specialized language models for IDE completion, software engineering workflows, and developer tooling.
Featured models
| Model | Released | Context | Input price ($/1M) | Output price ($/1M) | License | Openness |
|---|---|---|---|---|---|---|
| Mellum2 12B | 2026-06-01 | 131k | - | - | Apache 2.0 | Open source |
| Mellum 4B | 2025-04-30 | 8k | - | - | Apache 2.0 | Open source |
Model families
Recent releases
- Mellum2 12B- 2026-06-01
- Mellum 4B- 2025-04-30
FAQ
Who founded JetBrains and when?
JetBrains was founded in 2000 and is associated with Prague, Czech Republic.
What models has JetBrains released?
JetBrains ships 2 models across 2 families: Mellum 2 and Mellum.
Is JetBrains's technology open source?
All tracked models are released under Apache 2.0.
Where is JetBrains headquartered?
JetBrains is headquartered in Prague, Czech Republic.
What is JetBrains known for?
Developer tools company building code-specialized Mellum models. Its most prominent tracked family is Mellum 2.
How can I access JetBrains's models?
JetBrains's provider availability is tracked on model pages as API and hosting data is verified.
Explore related pages
Last reviewed: 2026-06-29. Data sourced from public lab announcements and provider documentation.