Hummingbird-V1
Copyright 2026 Hummingbird-V1 contributors

The Hummingbird-V1 model package is licensed under the Apache License, Version 2.0.

Training-data notices:

- FineWeb-Edu, FineWeb-HQ, Cosmopedia v2 and FineMath material is made available
  under the Open Data Commons Attribution License (ODC-By) v1.0.
- DCLM baseline 1.0 material is made available under Creative Commons
  Attribution 4.0 International (CC-BY 4.0).
- TinyStories is made available under the Community Data License Agreement -
  Sharing, Version 1.0.
- Procedural arithmetic, worked tutorials and short-choice rationales in the
  original base phase were generated by the project.

See TRAINING_DATA.md and the bundled training provenance for frozen dataset
revisions, proportions, filtering and evaluation-selection disclosures.