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Google Gemma 4 開源模型完整解析:31B 參數打贏 400B 對手,Apache 2.0 授權免費商用 | Google Gemma 4 Explained: How a 31B Open Model Beats 400B Rivals Under Apache 2.0 License

By Kit 小克 | AI Tool Observer | 2026-04-19

🇹🇼 Google Gemma 4 開源模型完整解析:31B 參數打贏 400B 對手,Apache 2.0 授權免費商用

Gemma 4 是什麼?Google 最強開源模型登場

2026 年 4 月 2 日,Google DeepMind 發布了 Gemma 4 系列模型,號稱「每個位元組最強的開源模型」。這次一口氣推出四個版本:E2B、E4B、26B MoE 和 31B Dense,全部採用 Apache 2.0 授權,可以免費商用。

最讓人驚訝的是:31B 參數的模型,竟然在多項測試中打贏了 400B 等級的對手。這代表什麼?你不需要花大錢租 GPU 叢集,用一張消費級顯卡就能跑出頂級效果。

Gemma 4 有哪些版本?該選哪一個?

四個版本各有定位:

  • E2B / E4B:邊緣裝置專用,手機、Raspberry Pi、Jetson Nano 都能跑,支援原生語音輸入,128K 上下文
  • 26B MoE:混合專家架構,推理時只啟動 3.8B 參數,速度極快,適合需要低延遲的應用
  • 31B Dense:全密集架構,品質最高,適合微調和需要最佳效果的場景,256K 上下文

跑分到底有多強?

31B 模型的關鍵數據:

  • MMLU Pro:85.2%(多語言問答)
  • AIME 2026:89.2%(數學推理)
  • GPQA Diamond:84.3%(研究生等級科學問答)
  • LiveCodeBench v6:80.0%(程式碼生成)
  • Codeforces ELO:從 Gemma 3 的 110 跳到 2150,等於專業競技程式設計師水準
  • Arena AI 排行榜:文字類第 3 名

Codeforces ELO 從 110 暴漲到 2150,這個進步幅度在開源模型中前所未見。

跟其他開源模型比呢?

31B 是目前 Arena AI 文字排行榜第 3 名的開源模型,26B MoE 排第 6。考慮到參數量只有對手的十分之一,這個性價比非常驚人。

實際能做什麼?

Gemma 4 不只是語言模型,它原生支援:

  • 多模態:圖片、影片、語音(E2B/E4B)都能處理
  • Function Calling:原生函式呼叫,可以直接串接工具
  • JSON 結構化輸出:API 整合更方便
  • 140 種語言:多語言不只是翻譯,而是真正理解
  • Agent 工作流:τ2-bench 工具使用測試拿下 86.4%

開發者怎麼開始用?

Gemma 4 已經上架到 Hugging Face、Ollama、Kaggle、LM Studio 和 Docker,訓練框架支援 JAX、Vertex AI 和 Keras。消費級 GPU 就能跑,邊緣裝置甚至可以離線運作、近乎零延遲。

對產業的影響是什麼?

Apache 2.0 授權意味著:你可以拿來做產品、賣服務、修改模型,完全不用付授權費。對新創團隊和中小企業來說,這是用頂級 AI 能力的最低門檻。

當 31B 模型就能打贏 400B 的閉源對手,「花大錢用 API」不再是唯一選擇。自建部署、資料不外洩、成本可控——開源模型正在改變遊戲規則。

常見問題 FAQ

Gemma 4 可以免費商用嗎?

可以,Gemma 4 採用 Apache 2.0 授權,完全免費商用,不需要付授權費。

Gemma 4 需要什麼硬體才能跑?

E2B 和 E4B 可以在手機和邊緣裝置上運行。26B 和 31B 針對消費級 GPU 優化,不需要企業級硬體。

Gemma 4 支援中文嗎?

支援,Gemma 4 原生支援 140 種語言,包含繁體中文和簡體中文。

Gemma 4 跟 Llama 4 比哪個好?

在 Arena AI 排行榜上 Gemma 4 31B 排第 3,表現非常強勁。實際選擇取決於你的使用場景和部署需求。

好不好用,試了才知道


🇺🇸 Google Gemma 4 Explained: How a 31B Open Model Beats 400B Rivals Under Apache 2.0 License

What Is Gemma 4? Google Releases Its Most Capable Open Model

On April 2, 2026, Google DeepMind released Gemma 4, calling it "byte for byte, the most capable open model." The release includes four variants: E2B, E4B, 26B MoE, and 31B Dense, all under the Apache 2.0 license — fully free for commercial use.

The headline? A 31B-parameter model that beats 400B-class rivals on multiple benchmarks. Translation: you can run top-tier AI on a consumer GPU instead of renting expensive cloud clusters.

Which Gemma 4 Model Should You Choose?

Four variants, each with a clear purpose:

  • E2B / E4B: Built for edge devices — phones, Raspberry Pi, Jetson Nano. Native audio input support, 128K context window
  • 26B MoE: Mixture of Experts architecture, only activates 3.8B parameters during inference for blazing speed and low latency
  • 31B Dense: Full dense architecture for maximum quality, ideal for fine-tuning, 256K context window

How Does Gemma 4 Perform on Benchmarks?

The 31B model key results:

  • MMLU Pro: 85.2% (multilingual Q&A)
  • AIME 2026: 89.2% (mathematical reasoning)
  • GPQA Diamond: 84.3% (graduate-level science)
  • LiveCodeBench v6: 80.0% (code generation)
  • Codeforces ELO: Jumped from 110 (Gemma 3) to 2150 — expert competitive programmer level
  • Arena AI Leaderboard: #3 in text category

The Codeforces jump from 110 to 2150 is unprecedented for any open model generation-over-generation improvement.

How Does It Compare to Other Open Models?

The 31B ranks #3 on the Arena AI text leaderboard, while the 26B MoE ranks #6. At roughly one-tenth the parameter count of its competitors, the value proposition is extraordinary.

What Can Gemma 4 Actually Do?

Gemma 4 is more than a language model. Native capabilities include:

  • Multimodal: Processes images, video, and audio (E2B/E4B)
  • Function Calling: Native tool integration without prompt hacks
  • Structured JSON Output: Clean API integration
  • 140 Languages: True multilingual understanding, not just translation
  • Agent Workflows: 86.4% on τ2-bench tool-use evaluation

How Do Developers Get Started?

Gemma 4 is available on Hugging Face, Ollama, Kaggle, LM Studio, and Docker. Training frameworks include JAX, Vertex AI, and Keras. Consumer GPUs can handle inference, and edge models run fully offline with near-zero latency.

What Does This Mean for the Industry?

Apache 2.0 means you can build products, sell services, and modify the model with zero licensing fees. For startups and SMBs, this is the lowest barrier to top-tier AI capability.

When a 31B model outperforms 400B closed-source rivals, paying premium API prices is no longer the only option. Self-hosted deployment, data sovereignty, and cost control — open source is rewriting the rules.

FAQ

Is Gemma 4 free for commercial use?

Yes. Gemma 4 uses the Apache 2.0 license, which allows full commercial use with no licensing fees.

What hardware do I need to run Gemma 4?

E2B and E4B run on phones and edge devices. The 26B and 31B models are optimized for consumer GPUs — no enterprise hardware required.

Does Gemma 4 support Chinese?

Yes. Gemma 4 natively supports 140 languages, including Traditional and Simplified Chinese.

How does Gemma 4 compare to Llama 4?

Gemma 4 31B ranks #3 on the Arena AI leaderboard with strong benchmark results. The best choice depends on your specific use case and deployment requirements.

Try it yourself — that is the only way to know if it works for you.

Sources / 資料來源

常見問題 FAQ

Gemma 4 可以免費商用嗎?

可以,Apache 2.0 授權完全免費商用,不需要付授權費。

Gemma 4 需要什麼硬體才能跑?

E2B/E4B 可在手機運行,26B/31B 針對消費級 GPU 優化。

Gemma 4 支援中文嗎?

支援,原生支援 140 種語言,包含繁體中文和簡體中文。

Gemma 4 跟 Llama 4 比哪個好?

Gemma 4 31B 在 Arena AI 排第 3,選擇取決於使用場景。

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