Open-model cases

Gemma

Google’s downloadable-weight family connects Gemini-derived research with local, edge, and hosted deployment. Google calls the family open models, but licenses differ by release.

Reference period: 2024
Last reviewed: 2026-10-23

Key terms

open weights
lightweight models
edge deployment

Openness profile

Gemma 1, Gemma 2 and Gemma 3 use Gemma terms; Gemma 4 weights use Apache 2.0. Open weights alone do not establish that the training data and training code are published.

"Open source", "open model", and "open weights" are not interchangeable. Review code, weights, training information, and license separately for each release.

Connected across the project

Builds on

Transformer
Quantization
Open-model Inference Ecosystem

Historical context

LLM Era (2020s–Present)

Primary sources

Gemma models overview
Gemma Terms of Use
Gemma 4 model card

This is a curated technical map, not a claim of comprehensive coverage.