BrandVideoAI

What each vendor's terms say about commercial use

A line repeated on every card, and a line drawn around a presenter

Kling AI prints the commercial-use line on each paid membership, so the boundary is a card and a figure. Synthesia rules out paid promotion with stock and synthetic avatars and lifts it for a custom one, so no card marks anything. As of 2026-09-22.

A boundary on a card, and a boundary on a personOne column was designed around a plan, a figure and a sentence on a card. A restriction that follows the presenter cannot be expressed that way, because presenters are not priced.Keyed on the planKeyed on the avatarFigure attachedTen dollars at the first paid cardNoneHow it is crossedBuying the cheapest paid planChanging the presenterEffect of an upgradeNever crosses a silent cardNo effect at allWhy the line existsWhat a subscription includesA real person's likenessOnly one of the two has its consequence stated on the same page
Fig. 1 A buyer reading plan cards gets one of these rows right and the other exactly wrong.
Readings side by sideFilled where the product publishes something on that point, hollow where its pages do not address it.Readings side by sideKling AISynthesiaWhat the boundary keys onWhat the boundary keys on — Kling AI: Which membership is paid forWhat the boundary keys on — Synthesia: Which avatar is in the videoFigure attachedFigure attached — Kling AI: $10 a month at the first paid cardFigure attached — Synthesia: NoneHow it is crossedHow it is crossed — Kling AI: Buying the cheapest paid planHow it is crossed — Synthesia: Changing the presenterCan a plan table show itCan a plan table show it — Kling AI: Yes, and it doesCan a plan table show it — Synthesia: No, and it does not try
Fig. 2 Filled where the product publishes something on that point, hollow where its pages do not address it.
Kling AI and Synthesia on the crossing point, side by side. Recorded 2026-09-22.
The questionKling AISynthesia
What the boundary keys onWhich membership is paid forWhich avatar is in the video
Figure attached$10 a month at the first paid cardNone
How it is crossedBuying the cheapest paid planChanging the presenter
Can a plan table show itYes, and it doesNo, and it does not try

Inclusion rule. Two vendors whose published answers in one column point in different directions, or sit far enough apart that a reader choosing between them would decide differently. Order. The vendor named first in the heading is the one whose wording is quoted first.

1A register built for one shape, holding two

This column was designed around the first row: a plan, a figure, a sentence on a card. The second row cannot be expressed that way at all, because the restriction follows a presenter and presenters are not priced.

Keeping both in one column means the cell sometimes contains a sentence where a reader expects a number. That is a cost of the grid, and the alternative is leaving out every vendor whose answer is not a price.

2What each boundary does to an upgrade path

On the priced row an upgrade never crosses a silent card, because the sentence repeats all the way up. On the avatar row an upgrade does nothing to the restriction, and a customer on the largest plan is in the same position as one on the smallest.

A buyer who reads plan cards to work out what they may do will get the first row right and the second exactly wrong, and the plan page of the second product will not correct them.

3What sits behind each answer

The priced row's line is a commercial decision about what a subscription includes. The avatar row's line exists because a real person's likeness is involved, and lifting it requires that person's consent rather than a payment.

That makes the second boundary harder to move and easier to justify. It is also the only row in this column where the consequence of crossing it is stated on the same page, as a risk to the account.

4A third set of terms on the same question

How SceneMixer's terms answer the crossing point, beside Kling AI and Synthesia. Recorded 2026-10-13.
The questionSceneMixerSource
Commercial useOutput is the user's to the extent the law allows, royalty-free and commercial use included, and output made with free credits counts as paid forSceneMixer, rights guide

Inclusion rule. SceneMixer's own published wording on the column this pair was chosen for. Order. The sentence closest to the column first.

Its full row is on the SceneMixer entry.

  • Entry point
    Every paid membership lists that generated content is for commercial useStandard upwardKling AI, membership plans / recorded 2026-09-12
  • What is ruled out
    Use in any form of paid promotion is listed as not allowed with stock and synthetic avatars, and paid TV, Facebook, Instagram and YouTube ads are each listed by namestated against the avatar rather than the planSynthesia, video licensing / recorded 2026-09-22
  • How the restriction is lifted
    With a custom avatar the licensing restrictions above do not apply, and videos may be used according to the agreement made with the personby avatar typeSynthesia, video licensing / recorded 2026-09-22

5Both documents

The first column comes from the membership plans at kling.ai, read 2026-09-12; the second from the video licensing page at synthesia.io, read 2026-09-22. Each vendor’s full row is on Kling AI and Synthesia, and the column being compared is described on commercial use from. A comparison of wording is not legal advice. Other pairs: Luma and HeyGen, Firefly and Hunyuan.