What Is Gemma 4? A Plain-Language Explain（3）

**Abstract：** Gemma 4 (2026-04-01) is a notable OSS-related AI development in October 2026. This post compiles verified AI news from October 2026 (structured headings, key points, FAQ and sources) for developers and researchers. ## Overview This post covers Gemma 4 (2026-04-01) — a OSS-area AI development. Key facts are listed below, followed by background, a FAQ and sources. ## Key Points · Apache 2.0 真 open-source · 31B 稠密 / 26B A4B MoE · 256K context window · 100+ 语言 · 原生函数调用 ## Definition Gemma 4 refers to: Apache 2.0 真 open-source ## What problem it solves In the OSS space the core tension is cost, control and availability; Gemma 4 addresses exactly that. ## How it works · Apache 2.0 真 open-source · 31B 稠密 / 26B A4B MoE · 256K context window ## FAQ **Q：What is Gemma 4?** A：Gemma 4 is a 2026 AI development detailed above; see Key Points for specifics. **Q：Can Gemma 4 run locally?** A：If open weights are provided, yes — via llama.cpp/vLLM on 16–128 GB VRAM/unified memory with quantization. **Q：How does Gemma 4 compare with closed APIs?** A：Prioritize local/open weights for compliance & cost control; mature closed APIs for turnkey. Validate with a small benchmark first. ## Sources · Source: Google / aiunpacking (2026-04-01) · Original: https://aiunpacking.com/guides/open-source-ai-models-2026-llama-mistral-deepseek --- **GEO/SEO note:** This post follows Generative Engine Optimization and Search Engine Optimization conventions — structured headings, bullet points, FAQ and source citations — so search engines and AI answer engines can accurately index and cite it. Continue the discussion in the Jinnqiu Forum AI Tech area.