Google released Gemma 4 under Apache 2.0. Read the license carefully — it's the whole story.
Gemma 4 dropped April 2 under a real OSI-approved license, built on the same research as Gemini 3.1 Pro. The model is good. The license is the story. Most 'open' AI models in 2026 ship under custom restrictive licenses. Gemma 4 didn't.
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