# JetBrains/Mellum-4b-base

Model from Hugging Face for text generation: JetBrains/Mellum-4b-base · transformers

## Facts

- Type: LLM
- Task: text-generation
- Framework: transformers
- License: apache-2.0 — Permissive open license: commercial use, modification, and redistribution are permitted. (https://spdx.org/licenses/Apache-2.0.html)
- Source: https://huggingface.co/JetBrains/Mellum-4b-base
- Hosting: hosted (10 files)
- Files: 10 hosted of 14 listed
- File counts: "listed" is every file in the source repository; only hosted files download from Hugging Bay, and the download plan lists the files it selects for one download, so its count can differ.
- Hosted here: at least 10 listed files; full count and size unknown
- Full repo upstream: 8.05 GB
- Parameters: 4B
- Download: https://huggingbay.xyz/artifact/hf-model-jetbrains-mellum-4b-base/files (download plan: https://huggingbay.xyz/api/artifacts/hf-model-jetbrains-mellum-4b-base/download-plan)
- Per-file SHA-256: available for 10 of 10 hosted files via https://huggingbay.xyz/api/artifacts/hf-model-jetbrains-mellum-4b-base/files?limit=100
- Run-ready: no (Hugging Bay has not certified a run path for this model; hosted bytes are downloadable and hash-checkable only)
- Peer-assisted fallbacks: 0 verified, 0 pending review
- Downloads: 1567
- Stars: 454
- Card completeness: 96%

## Description

External Hugging Face catalog record for JetBrains/Mellum-4b-base. Task: text generation. Library: transformers. Datasets referenced by card metadata: bigcode/the-stack, bigcode/the-stack-v2, bigcode/starcoderdata, bigcode/commitpack. Includes 12 model-card evaluation signals. Popularity signal at import: 1,665 downloads and 454 likes.

## Model Card Facts

- Declared license: apache-2.0
- Pipeline: text-generation
- Library: transformers
- Task categories: text-generation
- Referenced datasets: bigcode/the-stack, bigcode/the-stack-v2, bigcode/starcoderdata, bigcode/commitpack
- Model-index entries: Mellum-4b-base
- Evaluation signals: 12 model-card eval results
- File hints: 12 upstream file samples

## Evaluation Signals

- RepoBench 1.1 (Python): EM = 0.2591 (text-generation)
- RepoBench 1.1 (Python): EM ≤ 8k = 0.2797 (text-generation)
- RepoBench 1.1 (Python, 2k): EM = 0.282 (text-generation)
- RepoBench 1.1 (Python, 4k): EM = 0.2795 (text-generation)
- RepoBench 1.1 (Python, 8k): EM = 0.2777 (text-generation)
- RepoBench 1.1 (Python, 12k): EM = 0.2453 (text-generation)
- RepoBench 1.1 (Python, 16k): EM = 0.211 (text-generation)
- RepoBench 1.1 (Java): EM = 0.2858 (text-generation)
- RepoBench 1.1 (Java): EM ≤ 8k = 0.3108 (text-generation)
- RepoBench 1.1 (Java, 2k): EM = 0.3202 (text-generation)

## Referenced Data

- Dataset: bigcode/the-stack
- Dataset: bigcode/the-stack-v2
- Dataset: bigcode/starcoderdata
- Dataset: bigcode/commitpack

## File Hints

- .gitattributes (1.5 KB)
- README.md (11 KB)
- config.json (730 B)
- generation_config.json (132 B)
- merges.txt (893 KB)
- model-00001-of-00002.safetensors (4.6 GB) LFS
- model-00002-of-00002.safetensors (2.8 GB) LFS
- model.safetensors.index.json (22 KB)
- special_tokens_map.json (1.1 KB)
- tokenizer.json (6.7 MB)
- tokenizer_config.json (5.5 KB)
- vocab.json (1.5 MB)

## Quality Checklist

- Summary: passed
- Description: passed
- Model card metadata: passed
- License: passed
- Provenance: passed
- File inventory: passed
- Hosted bytes: passed
- Scan result: passed
- Manifest signature: passed

## Safety Notes

- External catalog metadata imported from Hugging Face public API on 2026-09-20T20:33:42.273Z.
- Upstream license: apache-2.0. Mirror admission policy: permissive (owner policy; no license rights inferred).
- Model-index metadata found for Mellum-4b-base.
- Model card references dataset context: bigcode/the-stack, bigcode/the-stack-v2, bigcode/starcoderdata, bigcode/commitpack.
- Not a run kit: hosted, hash-checked bytes only; run readiness is not certified for this model yet.

## Actions

- Web: https://huggingbay.xyz/artifact/hf-model-jetbrains-mellum-4b-base
- Files API: https://huggingbay.xyz/api/artifacts/hf-model-jetbrains-mellum-4b-base/files?limit=100
- Metadata: https://huggingbay.xyz/api/artifacts/hf-model-jetbrains-mellum-4b-base/metadata.json
- Distribution: https://huggingbay.xyz/api/artifacts/hf-model-jetbrains-mellum-4b-base/distribution
- Manifest: https://huggingbay.xyz/api/manifests/hf-model-jetbrains-mellum-4b-base
- Download plan (per-file SHA-256 + signed download URLs): https://huggingbay.xyz/api/artifacts/hf-model-jetbrains-mellum-4b-base/download-plan
- Hosted download rows: https://huggingbay.xyz/api/downloadable-files?artifactId=hf-model-jetbrains-mellum-4b-base&limit=100
- Request mirror: not applicable.
- Submit peer fallback for review: POST https://huggingbay.xyz/api/artifacts/hf-model-jetbrains-mellum-4b-base/decentralized-fallbacks