AI video generator alternative to Grok
Searching for an AI video generator alternative to Grok usually means one of two things: Grok will not generate video on your free account, or it will and the watermark is a problem. Both are true — xAI’s pricing table shows video as the one generative row the free tier does not get, and every paid output carries a watermark it says cannot be removed. Here is the comparison with FlowPix, including the places Grok is simply better.
競品定價讀取於 July 26, 2026，來源 x.ai/pricing
Grok Imagine (video) 與 FlowPix 並排比較
| 比較項目 | Grok Imagine (video) | FlowPix |
|---|---|---|
| Video on the free tier | No — the only generative row the free tier lacks | No — video starts on Starter ($16/mo) |
| Cheapest plan with video | SuperGrok Lite (price on xAI’s pricing page) | Starter — $16/mo |
| Clip length | 30 seconds at 720p on SuperGrok; API allows 1–15s | Up to 10 seconds |
| Watermark | Always, unremovable by policy | None |
| Quality under load | 720p drops to 480p automatically once the tier cap is hit | No tier-based downgrade |
| Models | Grok Imagine only | Eighteen video models |
| Audio | Claimed native audio; the API reference documents no audio parameter | Veo 3.1 generates audio; other models are silent |
| Published limits | Shared weekly pool, no numeric cap published | Credits — 10–220 per five-second clip depending on model |
Grok Imagine (video) 勝出的地方
- Video on its lowest paid tier, SuperGrok Lite. FlowPix video starts on Starter at $16/mo; check xAI’s pricing page for SuperGrok Lite’s current price before comparing.
- Longer clips. SuperGrok advertises 30-second 720p video; FlowPix caps a generation at 10 seconds.
- Native audio is part of the pitch — xAI calls it a "video-audio generative model".
- Mobile apps on iOS and Android.
FlowPix 勝出的地方
- No watermark. Grok marks every frame, permanently, by policy.
- Eighteen video models to route between — Veo, Kling, Seedance, Hailuo, Vidu — instead of one.
- Countable credits rather than an unpublished weekly pool that pauses paid features when exhausted.
- No silent quality downgrade. xAI states 720p output "automatically falls back to 480p once you hit the 720p cap for your tier".
結論
On clip length Grok wins outright: 30 seconds against 10. On price, compare SuperGrok Lite’s current price on xAI’s page with FlowPix Starter at $16/mo. If clip length is your constraint, take Grok and stop reading. The reason to choose FlowPix is narrow and specific — output you can put in front of a client. Grok watermarks every frame permanently, downgrades 720p to 480p once you cross an unpublished cap, and gives you one model. FlowPix gives eighteen, no watermark, and credits you can count. That is the trade; it is not a landslide in either direction.
大家真正會問的問題
Can Grok generate video for free?
No. xAI’s pricing comparison shows video generation as unavailable on the free tier while image generation is included. The cheapest plan with video is SuperGrok Lite; xAI lists its current price on the pricing page.
How long can Grok videos be?
The SuperGrok tier advertises 30-second 720p video. Through the API, duration is 1–15 seconds, and video editing caps at about 8.7 seconds. Lengths for the Lite and Heavy tiers are not published.
Does Grok watermark videos?
Yes, and permanently. xAI states there is no setting to remove the watermark, and removing or obscuring it breaches the acceptable-use policy.
Is FlowPix better than Grok for video?
Not on clip length — Grok beats it there. On price, compare the two entry plans on the day you buy. FlowPix is the better choice only if you need unwatermarked output, a choice of eighteen video models, or usage you can count in advance.