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 non-obsolete families, with task labels spanning coding, rag, and agents. Open a model detail page to compare provider routes and sourced benchmarks.
Portfolio context: 5 decision-task tags, 2 active tracked models, latest research stamp 2026-06-01.
Use this portfolio page for
- Teams evaluating coding, rag, and agents across this lab's releases
- Readers comparing families before locking a flagship SKU
- 2 tracked SKUs for migration and pricing follow-ups
Do not stop here for
- Choosing a hosting provider without opening a model page for price ladders
Active models
2
Non-deprecated SKUs linked to this researcher
Active families
2
Non-obsolete families in coverage
Open catalog
2 OSS
0 open-weight (text match)
Decision task tags
5
Mapped to the site-wide task taxonomy
Latest dated release
2026-06-01
Mellum2 12B
Freshness
2026-06-01
Researched today
Release cadence
Showing 2 recent dated ships (full timeline below). Latest spotlight: 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
Anchor SKU: Mellum 4B (best sourced coding Q/$ in this portfolio).
Quality / dollar unavailable for this anchor — missing benchmark coverage and/or output token price on the cheapest ladder route (open the model detail after pricing lands).
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 can scan counts, links, release history, and source references without leaving the directory.
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 |
|---|---|---|---|---|---|
| Mellum2 12B | 2026-06-01 | 131k | - | - | Apache 2.0 |
| Mellum 4B | 2025-04-30 | 8k | - | - | Apache 2.0 |
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: 2026-06-01. Data sourced from public lab announcements and provider documentation.