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Google Gemma 4 完整解析:開源模型 Arena AI 第 3、Codeforces ELO 暴衝 2150 | Google Gemma 4: Open-Source Model Hits Arena AI #3 with Codeforces ELO 2150

By Kit 小克 | AI Tool Observer | 2026-04-23

🇹🇼 Google Gemma 4 完整解析:開源模型 Arena AI 第 3、Codeforces ELO 暴衝 2150

Google Gemma 4 在 2026 年 4 月正式發布,是 Google DeepMind 基於 Gemini 3 研究成果打造的開源模型家族。採用 Apache 2.0 授權,提供 4 種尺寸,最大的 31B Dense 在 Arena AI 排名第 3,Codeforces ELO 從 110 暴衝到 2150。這到底是什麼等級的開源模型?

Gemma 4 有哪些模型可以選?

Gemma 4 提供 4 種尺寸,從手機到伺服器都能跑,是目前覆蓋範圍最廣的開源模型家族。

  • E2B(~2.3B 有效參數):手機端推論,128K context
  • E4B(~4.5B 有效參數):邊緣裝置,128K context
  • 26B MoE(3.8B 活躍 / 26B 總參數):消費級 GPU,256K context,Arena AI 排名第 6
  • 31B Dense(全參數活躍):最高品質,256K context,Arena AI 排名第 3

Gemma 4 的跑分表現如何?

31B Dense 是目前開源模型中的頂級選手,多項 benchmark 成績驚人。

  • MMLU Pro:85.2%
  • AIME 2026:89.2%
  • LiveCodeBench v6:80.0%
  • Codeforces ELO:從 110 跳到 2150,開源模型史上最大單代躍進
  • Arena AI 文字排行榜:開源模型第 3 名

Gemma 4 支援哪些功能?

Gemma 4 不只是語言模型,它是原生多模態 + agent 工作流的完整方案。

  • 多模態輸入:文字、圖片、影片、音訊(小模型也支援)
  • 140+ 語言:預訓練涵蓋 140 種以上語言,35+ 語言原生支援
  • 256K context window:可以一次丟入整個程式碼庫或長文件
  • 原生 function calling:支援結構化 JSON 輸出、系統指令,適合建構自主 agent

開發者該怎麼用 Gemma 4?

Gemma 4 已經上架 Hugging Face、Google Cloud、LM Studio 等平台,Apache 2.0 授權代表商用完全沒問題。

  • 26B MoE 只需 ~4B 活躍參數,消費級 GPU(RTX 4090)就能跑
  • E2B/E4B 適合手機 app 和 IoT 裝置的離線推論
  • 31B Dense 適合需要最高品質的伺服器端應用
  • 原生 agentic 能力讓它特別適合自動化工作流

好不好用,試了才知道。但光看 Codeforces ELO 從 110 到 2150 這個數字,Google 這次在開源模型上確實拿出了誠意。


🇺🇸 Google Gemma 4: Open-Source Model Hits Arena AI #3 with Codeforces ELO 2150

Google Gemma 4 launched in April 2026 as Google DeepMind's most capable open model family, built on Gemini 3 research. Released under the Apache 2.0 license with four model sizes, the flagship 31B Dense ranks #3 on Arena AI and achieved a Codeforces ELO leap from 110 to 2150. Here is what developers need to know.

What Model Sizes Does Gemma 4 Offer?

Gemma 4 ships in four variants covering everything from smartphones to servers, making it the broadest open model family available today.

  • E2B (~2.3B effective params): On-device phone inference, 128K context
  • E4B (~4.5B effective params): Edge devices, 128K context
  • 26B MoE (3.8B active / 26B total): Consumer GPUs, 256K context, Arena AI #6
  • 31B Dense (all parameters active): Maximum quality, 256K context, Arena AI #3

How Does Gemma 4 Perform on Benchmarks?

The 31B Dense model delivers top-tier results across multiple benchmarks, competing with models many times its size.

  • MMLU Pro: 85.2%
  • AIME 2026: 89.2%
  • LiveCodeBench v6: 80.0%
  • Codeforces ELO: 110 to 2150 — the largest single-generation leap for any open model
  • Arena AI text leaderboard: #3 among all open models

What Can Gemma 4 Do Beyond Text?

Gemma 4 is not just a language model — it is a complete multimodal and agentic solution out of the box.

  • Multimodal input: Text, image, video, and audio (even on smaller models)
  • 140+ languages: Pre-trained on 140+ languages with native support for 35+
  • 256K context window: Feed entire codebases or long documents in a single prompt
  • Native function calling: Structured JSON output, system instructions, built for autonomous agents

How Should Developers Get Started with Gemma 4?

Gemma 4 is available on Hugging Face, Google Cloud, and LM Studio. The Apache 2.0 license means full commercial use with no restrictions.

  • The 26B MoE only activates ~4B parameters, runnable on consumer GPUs like the RTX 4090
  • E2B/E4B are designed for mobile apps and IoT offline inference
  • 31B Dense is ideal for server-side applications requiring maximum quality
  • Native agentic capabilities make it especially suited for automation workflows

You never really know until you try it yourself. But looking at that Codeforces ELO jump from 110 to 2150, Google clearly brought serious firepower to the open-source model race this time.

Sources / 資料來源

常見問題 FAQ

Gemma 4 有哪些模型尺寸?

共 4 種:E2B(~2.3B)、E4B(~4.5B)、26B MoE(3.8B 活躍參數)、31B Dense(全參數活躍)。

Gemma 4 可以商用嗎?

可以,Gemma 4 採用 Apache 2.0 授權,完全開放商業使用,沒有限制。

Gemma 4 的 Codeforces ELO 是多少?

31B Dense 的 Codeforces ELO 達到 2150,從上一代的 110 暴漲,是開源模型史上最大的單代躍進。

消費級 GPU 能跑 Gemma 4 嗎?

可以,26B MoE 只需約 3.8B 活躍參數,RTX 4090 等消費級 GPU 就能推論。

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