# Adapting a code model to a private codebase

StarCoder2 offers several downloadable code-model sizes plus fine-tuning and evaluation examples for local completion and generation experiments.

Canonical: https://brightaifuture.com/discoveries/starcoder2-local-code
Format: discovery
Source publication: 2024-02-29
Bright publication: 2026-09-19
Substantive update: None recorded
Evidence and review: Emerging; confidence: unassessed; source-checked; ai-assisted. AI-assisted comparison with the cited sources. Source-checked means the record was checked against those sources; it does not claim independent reproduction, expert review, or validation of the publisher’s results.

## The human problem

Developers want coding assistance that can operate near private code and adapt to domain conventions.

## The prior constraint

Many capable coding assistants were accessible only through hosted products with limited adaptation or inspection.

## AI’s actual role

A transformer trained on source code predicts and generates code, with variants sized for different hardware constraints.

## The documented result

BigCode publishes 3B, 7B, and 15B model releases, a fine-tuning example, and links to a code evaluation harness.

## Why it may matter

Downloadable variants let teams test privacy, latency, and adaptation tradeoffs directly, while review and testing remain part of software authorship.

## Limitations

Generated code can be insecure, incorrect, or incompatible with a project. Repository code is Apache-2.0, while StarCoder2 model weights use BigCode OpenRAIL-M v1; dataset provenance and terms remain separate.

The project repository establishes model and tooling availability; benchmark results do not establish correctness in a production codebase.

## Unresolved questions



## Provenance and history

{
  "dates": {
    "eventDate": null,
    "publicationDate": "2024-02-29",
    "captureDate": "2026-09-19",
    "lastReviewedDate": "2026-09-19"
  },
  "provenance": {
    "origin": "editorial",
    "externalId": "https://github.com/bigcode-project/starcoder2"
  },
  "revisions": [
    {
      "id": "revision:open-models-added:starcoder2-local-code",
      "recordedAt": "2026-09-19",
      "summary": "Bright added this source-checked open-model application record. The cited source publication date is 2024-02-29; 2026-09-19 is when Bright added this record.",
      "sourceIds": [
        "starcoder2-repository",
        "starcoder2-paper"
      ]
    }
  ],
  "corrections": []
}

## Original sources

- [StarCoder2](https://github.com/bigcode-project/starcoder2)
- [StarCoder 2 and The Stack v2: The Next Generation](https://arxiv.org/abs/2402.19173)

## Continue exploring

- [Open Models](https://brightaifuture.com/open-models)
- [Open intelligence](https://brightaifuture.com/worlds/open)
- [What changes when powerful models become open-weight?](https://brightaifuture.com/threads/open)
- [Someone builds on it](https://brightaifuture.com/open-intelligence)