Question 1

Kling 4.0: Commercial use?

Accepted Answer

No. Source: Kling terms, read 2026-10-28. "Terms of Service s4.6: 'Specifically, without our written permission, you may not use, reproduce, distribute, and create derivative works of, and make modifications to, the Output for any commercial purposes.'"

Question 2

Kling 4.0: Trains on your inputs?

Accepted Answer

Yes. Source: Kling terms, read 2026-10-28. "Terms of Service s4.7.3: 'Kling AI may process usage data, aggregated data, or Input for its lawful business purposes... (f) create, test, improve, train, or otherwise develop the artificial intelligence or machine learning models, systems, architecture...'; s4.7.2: 'We may, at our discretion or by licensing to third parties, use or develop the aforementioned Content (in whole or in part) for the purposes of promotion, product/function upgrades, and to research on new products/functions.' Revocable by email under s4.7.4."

Question 3

Kling 4.0: Trains on your prompts?

Accepted Answer

Yes. Source: Kling terms, read 2026-10-28. "Prompts fall inside the Input definition (s4.2). Terms of Service s4.7.3: 'Kling AI may process usage data, aggregated data, or Input for its lawful business purposes... (f) create, test, improve, train, or otherwise develop the artificial intelligence or machine learning models, systems, architecture...'; s4.7.2: 'We may, at our discretion or by licensing to third parties, use or develop the aforementioned Content (in whole or in part) for the purposes of promotion, product/function upgrades, and to research on new products/functions.' Revocable by email under s4.7.4."

Question 4

Kling 4.0: Trains on your outputs?

Accepted Answer

Yes. Source: Kling terms, read 2026-10-28. "Output is inside the s4.7.1 Content licence; s4.7.2 covers product/function upgrades and research. Terms of Service s4.7.3: 'Kling AI may process usage data, aggregated data, or Input for its lawful business purposes... (f) create, test, improve, train, or otherwise develop the artificial intelligence or machine learning models, systems, architecture...'; s4.7.2: 'We may, at our discretion or by licensing to third parties, use or develop the aforementioned Content (in whole or in part) for the purposes of promotion, product/function upgrades, and to research on new products/functions.' Revocable by email under s4.7.4."

Question 5

Kling 4.0: Output ownership?

Accepted Answer

User. Source: Kling terms, read 2026-10-28. "Terms of Service s4.4: 'You own all intellectual property rights and other proprietary interests in and to the Content under applicable law, or such rights belong to the rightful rights holder as determined under applicable law. We do not claim ownership of the Content.' (Content = Input and Output.)"

Question 6

Kling 4.0: Copyright indemnity?

Accepted Answer

No. Source: Kling terms, read 2026-10-28. "Terms of Service s8.2(b): 'You agree to defend, indemnify, and hold harmless us, our parent companies, subsidiaries, and affiliates... from any and all claims, liabilities, costs, and expenses... arising out of a breach by you, your content or any user of your Account' - the indemnity runs user to Kling."

Question 7

Kling 4.0: Marking applied by the model?

Accepted Answer

Yes. Source: Kling terms, read 2026-10-28. "Terms of Service s4.5: 'without our written permission, when you use, distribute or disseminate the AI function to generate content, you shall label the Output interface with the brand and logo involved (including but not limited to "Kling AI"...)'; Terms of Paid Service s7.2: 'each member holds exclusive rights and interests of removing brand watermarks from their generated images, videos and other content. If you are an user who is a non-member... you shall label all content generated on the Website/APP with the brand and logo involved'. AI Content Detection page: 'An imperceptible watermark and metadata are embedded in images and videos, remaining traceable through compression, editing, and resharing.'"

Question 8

Kling 4.0: Disclosure duty on you?

Accepted Answer

Required. Source: Kling terms, read 2026-10-28. "Terms of Service s4.5: 'without our written permission, when you use, distribute or disseminate the AI function to generate content, you shall label the Output interface with the brand and logo involved (including but not limited to "Kling AI"...)'; Terms of Paid Service s7.2: 'each member holds exclusive rights and interests of removing brand watermarks from their generated images, videos and other content. If you are an user who is a non-member... you shall label all content generated on the Website/APP with the brand and logo involved'. AI Content Detection page: 'An imperceptible watermark and metadata are embedded in images and videos, remaining traceable through compression, editing, and resharing.'"

Can I use Kling 4.0 commercially?

Sources

Kling 4.0 on other services

Other models on Kling (Regular plan)

Keep these terms with your own work

Tell me when these terms change

Question	Answer	According to	Read on
Commercial use	No	Kling terms kling.ai	2026-10-28
	"Terms of Service s4.6: 'Specifically, without our written permission, you may not use, reproduce, distribute, and create derivative works of, and make modifications to, the Output for any commercial purposes.'"
Where outputs may be used	not on record	-	-
Trains on your inputs	Yes	Kling terms kling.ai	2026-10-28
	"Terms of Service s4.7.3: 'Kling AI may process usage data, aggregated data, or Input for its lawful business purposes... (f) create, test, improve, train, or otherwise develop the artificial intelligence or machine learning models, systems, architecture...'; s4.7.2: 'We may, at our discretion or by licensing to third parties, use or develop the aforementioned Content (in whole or in part) for the purposes of promotion, product/function upgrades, and to research on new products/functions.' Revocable by email under s4.7.4."
Trains on your prompts	Yes	Kling terms kling.ai	2026-10-28
	"Prompts fall inside the Input definition (s4.2). Terms of Service s4.7.3: 'Kling AI may process usage data, aggregated data, or Input for its lawful business purposes... (f) create, test, improve, train, or otherwise develop the artificial intelligence or machine learning models, systems, architecture...'; s4.7.2: 'We may, at our discretion or by licensing to third parties, use or develop the aforementioned Content (in whole or in part) for the purposes of promotion, product/function upgrades, and to research on new products/functions.' Revocable by email under s4.7.4."
Trains on your outputs	Yes	Kling terms kling.ai	2026-10-28
	"Output is inside the s4.7.1 Content licence; s4.7.2 covers product/function upgrades and research. Terms of Service s4.7.3: 'Kling AI may process usage data, aggregated data, or Input for its lawful business purposes... (f) create, test, improve, train, or otherwise develop the artificial intelligence or machine learning models, systems, architecture...'; s4.7.2: 'We may, at our discretion or by licensing to third parties, use or develop the aforementioned Content (in whole or in part) for the purposes of promotion, product/function upgrades, and to research on new products/functions.' Revocable by email under s4.7.4."
Output ownership	User	Kling terms kling.ai	2026-10-28
	"Terms of Service s4.4: 'You own all intellectual property rights and other proprietary interests in and to the Content under applicable law, or such rights belong to the rightful rights holder as determined under applicable law. We do not claim ownership of the Content.' (Content = Input and Output.)"
Copyright indemnity	No	Kling terms kling.ai	2026-10-28
	"Terms of Service s8.2(b): 'You agree to defend, indemnify, and hold harmless us, our parent companies, subsidiaries, and affiliates... from any and all claims, liabilities, costs, and expenses... arising out of a breach by you, your content or any user of your Account' - the indemnity runs user to Kling."
Marking applied by the model	Yes documentation, not contract	Kling terms kling.ai	2026-10-28
	"Terms of Service s4.5: 'without our written permission, when you use, distribute or disseminate the AI function to generate content, you shall label the Output interface with the brand and logo involved (including but not limited to "Kling AI"...)'; Terms of Paid Service s7.2: 'each member holds exclusive rights and interests of removing brand watermarks from their generated images, videos and other content. If you are an user who is a non-member... you shall label all content generated on the Website/APP with the brand and logo involved'. AI Content Detection page: 'An imperceptible watermark and metadata are embedded in images and videos, remaining traceable through compression, editing, and resharing.'"
Disclosure duty on you	Required	Kling terms kling.ai	2026-10-28
	"Terms of Service s4.5: 'without our written permission, when you use, distribute or disseminate the AI function to generate content, you shall label the Output interface with the brand and logo involved (including but not limited to "Kling AI"...)'; Terms of Paid Service s7.2: 'each member holds exclusive rights and interests of removing brand watermarks from their generated images, videos and other content. If you are an user who is a non-member... you shall label all content generated on the Website/APP with the brand and logo involved'. AI Content Detection page: 'An imperceptible watermark and metadata are embedded in images and videos, remaining traceable through compression, editing, and resharing.'"
Training data disclosed	not on record	-	-