MiniMax H3開源評測：2K影片生成模型免費權重解密 | MiniMax H3 Review: Open-Source 2K AI Video Model

7月 31, 2026

By Kit 小克 | AI Tool Observer | 2026-08-01

🇹🇼 MiniMax H3開源評測：2K影片生成模型免費權重解密

MiniMax H3 是中國AI新創MiniMax在2026年7月31日發布的最新影片生成模型，主打2K解析度、最長15秒的原生立體聲影片，並宣布將於8月初開放模型權重開源，讓任何人都能免費下載自行部署、微調甚至商用，不必付費給MiniMax。這是繼Sora逐漸退場後，AI影片生成戰場最新的重量級玩家。

MiniMax H3是什麼？

MiniMax H3（又稱Hailuo H3）是一款多模態影片生成模型，能處理文字、圖片、影片、音訊四種輸入，生成最長15秒、2560×1440解析度的影片，並支援原生立體聲與跨影片動作轉移，方便把一支影片的動作套用到另一組角色上。

開源權重代表什麼？

MiniMax計畫在8月初釋出H3模型權重，意味著只要硬體夠力，任何開發者都能在本機跑H3、客製化微調、疊加自己的產品，完全不必再付MiniMax訂閱費——這對商業廣告、電商、遊戲美術等場景是很大的成本利多。

MiniMax H3收費多少？跟Sora、Veo比較怎樣？

生成2K影片約每秒0.13美元，一支15秒2K短片成本約1美元，比多數主流對手便宜約三分之一。相較之下Google Veo 3.1 Lite約每秒0.05美元（720p），但畫質與時長都不如H3。而OpenAI的Sora網頁版與App已在2026年4月下架，API也將在9月停止服務，等於把市場拱手讓給MiniMax與Google這類還在積極迭代的對手。

H3適合哪些人用？

H3鎖定的是商業應用：廣告、電商素材、產品設計示意、遊戲過場動畫。它在人像寫實度（皮膚質感、微表情、髮絲細節）的表現在多次盲測中直逼甚至超越Veo 3與Sora 2，但企業級文件與音訊生成的說明目前仍不如Veo成熟。

Kit小克怎麼看

開源權重是最大亮點，本機部署的自由度是訂閱制比不上的
價格便宜，但目前僅開放少數早期創作者測試，完整權重要等8月初才釋出
中國AI公司在影片生成賽道的動作明顯比美系公司積極，Sora退場後戰局更清楚

好不好用，試了才知道。

🇺🇸 MiniMax H3 Review: Open-Source 2K AI Video Model

MiniMax H3, a new AI video generation model from Chinese AI startup MiniMax, dropped on July 31, 2026, offering 2K resolution and 15-second clips with native stereo sound — and the company says it will open-source the model weights in early August, letting anyone download, fine-tune, and deploy it commercially for free. It is the biggest video-model move since OpenAI began winding down Sora.

What Is MiniMax H3?

MiniMax H3 (also called Hailuo H3) is a multimodal video model that accepts text, image, video, and audio inputs to generate clips up to 15 seconds at 2560x1440 resolution, with native stereo audio and cross-video motion transfer for consistent character movement.

Why Does Open-Sourcing the Weights Matter?

MiniMax plans to release H3's model weights in early August, meaning anyone with enough hardware can run it locally, fine-tune it for a niche use case, and ship products on top without paying MiniMax a cent — a real cost advantage for ad agencies, e-commerce teams, and game studios.

How Much Does MiniMax H3 Cost, and How Does It Compare to Sora and Veo?

2K generation runs about $0.13 per second, so a 15-second 2K clip costs roughly $1 — about a third cheaper than most mainstream rivals. Google's Veo 3.1 Lite is cheaper per second (about $0.05 at 720p) but caps out at lower resolution and shorter clips. Meanwhile OpenAI shut down the Sora web and app in April 2026, with its API set to end in September 2026 — ceding ground to MiniMax and Google, the two labs still actively iterating on video generation.

Who Is H3 For?

H3 targets commercial use cases: advertising, e-commerce product shots, design mockups, and game cutscenes. Its photorealistic rendering of skin texture, micro-expressions, and hair detail reportedly rivals or beats Veo 3 and Sora 2 in blind comparisons, though its enterprise documentation and audio tooling still lag behind Veo.

Kit's Take

Open weights are the real headline — local deployment freedom no subscription model can match
Pricing looks attractive, but full weight access stays limited to early testers until early August
Chinese AI labs are moving faster than Western rivals in video generation right now, especially with Sora fading out

好不好用，試了才知道。 (Only trying it tells you if it is actually good.)

Sources / 資料來源

常見問題 FAQ

MiniMax H3何時開源？

MiniMax計畫在2026年8月初釋出H3模型權重，屆時任何人都能免費下載、本機部署與商用。

MiniMax H3收費怎麼算？

生成2K影片約每秒0.13美元，一支15秒2K短片成本約1美元。

MiniMax H3比Sora好嗎？

在人像寫實度盲測中表現常優於Sora 2，且OpenAI已宣布Sora API將於2026年9月停止服務。

H3支援多長的影片？

目前最長支援15秒、2560x1440解析度的原生立體聲影片，並支援跨影片動作轉移。

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