I Compared the Free Tiers of Google Flow, Kling AI, and Hailuo So You Don’t Have To

我对比了 Google Flow、Kling AI 和 Hailuo 的免费版，帮你省去试错成本

In my last post, I mentioned pivoting away from AI-generated video after digging into the free tiers of the big three tools. Here’s the actual digging — what each one gives you for free, and where the fine print gets in the way. I’m not affiliated with any of these tools. I just wanted a straight answer to “can I use this for a monetized channel without paying,” and it took longer to find than it should have.

在上一篇文章中，我提到在深入研究了三大 AI 视频工具的免费版后，决定放弃使用 AI 生成视频。以下是我实际调研的结果——它们分别提供了哪些免费额度，以及哪些“细则”会成为你的绊脚石。我与这些工具没有任何利益关联。我只是想找出一个明确的答案：“我能在不付费的情况下将这些工具用于获利频道吗？”而寻找这个答案的过程比预想中要漫长得多。

Tool	Free credits	Renewal	Max clip length (free)	Watermark	Commercial use on free tier
Google Flow (Veo 3.1)	~50	Daily	8 seconds	”Made with Veo” visible	Unclear — see below
Kling AI	~66	Daily	~5 seconds per generation	Visible	Explicitly excluded
Hailuo / MiniMax	200	One-time (new account bonus)	~6 seconds (768p)	Visible	Explicitly excluded

工具	免费积分	更新频率	最大片段时长 (免费)	水印	免费版商用权限
Google Flow (Veo 3.1)	~50	每日	8 秒	有 “Made with Veo” 水印	不明确 — 见下文
Kling AI	~66	每日	单次生成约 5 秒	有	明确禁止
Hailuo / MiniMax	200	一次性 (新账号奖励)	约 6 秒 (768p)	有	明确禁止

Google Flow (Veo 3.1) Flow 将 Veo 3.1（视频）、图像模型和音乐模型整合在一个工作区中。免费额度约为每天 50 个积分，不可累积——不用就作废。在较低的“Lite”质量设置下，这足够生成几次视频；而更高质量的“Quality”档位，单次生成消耗的积分可能就超过了全天的总额度。最关键的问题在于：我在 Google 的条款中找不到明确说明，即免费版 Veo 的输出内容是否获准用于获利的 YouTube 频道。一些第三方文章说法不一，甚至在“是否有水印”这种基本事实上的表述都相互矛盾。如果你打算进行商业变现，在基于此工具进行创作前，务必直接向 Google 客服确认——不要轻信任何博客（包括本文）的说法。

Google Flow (Veo 3.1) Flow bundles Veo 3.1 (video), an image model, and a music model into one workspace. The free allotment is roughly 50 credits a day, non-cumulative — use them or lose them. At the cheaper “Lite” quality setting that’s enough for a handful of generations; the higher “Quality” tier alone can cost more credits than the entire daily allowance. The catch that matters most: I could not find a clear statement, in Google’s own terms, that free-tier Veo output is cleared for monetized YouTube use. Some third-party writeups say yes, some say no, and they contradict each other on basic facts like whether the watermark is even there. If you’re planning to monetize, this is worth confirming directly with Google support before you build anything on top of it — not something I’d take on a blog’s word, including this one.

Kling AI Kling 的每日免费积分是这三者中最慷慨的，其角色动画的动作质量确实非常出色。但其免费版条款也是这几家中表述最明确的：禁止商用。这是一个明文限制，而非灰色地带，这反而让它成为三者中最容易规划的——你很清楚自己的处境。

Kling AI Kling’s free daily credit count is the most generous of the three, and the motion quality on character animation is genuinely good. But its free-tier terms are the most explicit of the group: no commercial use. That’s a documented limitation, not a gray area, which actually makes it the easiest of the three to plan around — you know where you stand.

Hailuo / MiniMax Hailuo 为新账号提供了一次性的大额积分奖励，而不是每日刷新，这使得它更适合短期的突发性实验，而非长期的日常生产。与 Kling 一样，其免费版同样有商用限制。

Hailuo / MiniMax Hailuo front-loads new accounts with a decent one-time credit bonus rather than a strong daily refresh, which makes it better suited to a short burst of experimentation than ongoing daily production. Same commercial-use restriction as Kling on the free tier.

What I’d actually check before committing Read the tool’s current terms of service yourself — not a summary of it, the actual page, dated to when you read it. These change. Search specifically for “commercial use” or “monetization” in the terms, not just “free” or “credits.” If a paid tier removes the watermark and adds commercial rights, price that in before assuming the free tier is a real substitute. Treat any blog post claiming “unlimited free generation,” including ones with big view counts, as marketing until you’ve verified it against the source. None of this means these tools are bad — the free tiers are still useful for experimenting and learning the workflow. It just means “free” and “free to monetize” aren’t the same claim, and only one of them was easy to find a straight answer to.

在投入使用前，我建议你核实以下几点： 亲自阅读工具当前的“服务条款”——不要看总结，要看原始页面，并留意阅读日期。条款是会变的。在条款中专门搜索“commercial use”（商用）或“monetization”（变现），而不仅仅是搜索“free”（免费）或“credits”（积分）。如果付费版才提供去水印和商用权，那么在假设免费版可以替代付费版之前，请先算好这笔账。对于任何声称“无限免费生成”的博客文章（即使阅读量很高），在未核实原始来源前，请将其视为营销内容。这并不是说这些工具不好——免费版对于实验和学习工作流依然很有用。这只是说明“免费”和“免费且可商用”并不是同一个概念，而其中只有一个能让你轻松找到明确的答案。