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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.

Maturity
Emerging, stage 2 of 4
Support
2 sources · repository, paper
Evidence detail
How we know ↓

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

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

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

What was shown, and what wasn’t

Shown

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

Not shown · limits

  • 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.

Bright editorial interpretation

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

How we know2 sources · checked 2026-09-19 · no corrections

Original sources

  1. StarCoder2 ↗ · repository
  2. StarCoder 2 and The Stack v2: The Next Generation ↗ · paper

Institutions: BigCode

Maturity
Emerging
Source published
2024-02-29
Captured
2026-09-19
Last source review
2026-09-19
Editorial method
AI-assisted source review

Bright compared this account with the linked original and supporting sources and kept reported, budgeted, projected, and observed claims distinct. Bright did not independently audit the underlying records.

Maturity describes the tested or operational setting. Confidence describes support for the particular claim; one does not determine the other.

Revision & correction history

2026-09-19 · 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.

No corrections recorded.

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