Can the audio generated by Azure Speech Studio's free tier (monthly limit of 500,000 characters) be used for commercial purposes like for example: narration of a youtube video?

Question

Can the audio generated by Azure Speech Studio's free tier (monthly limit of 500,000 characters) be used for commercial purposes like for example: narration of a youtube video?

KRJ14 0

Hello!

I've searched this Q&A site extensively but found conflicting answers and hence, I thought I should I ask directly.

I've Azure Speech Studio's free tier (monthly limit of 500,000 characters) and can I use the audio generated by that for narration of a Youtube video? Does this free tier allow commerical usage?

Please guide me.

Sincere Regards,

KRJ14

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Answer 1

Marcin Policht 103.6K MVP Volunteer Moderator

Yep - AFAIK, you can use audio generated with Azure Speech Studio’s free tier for commercial purposes such as narrating a YouTube video, provided you comply with Microsoft’s license terms and usage policies.

The free tier (for example, the 500,000 characters per month for text-to-speech) is a pricing tier, not a separate non-commercial license. Microsoft does not restrict commercial usage based on whether you are using the free tier or a paid tier. What matters is that you are using the service in accordance with the Microsoft Product Terms and the Azure Cognitive Services terms of service. Those terms allow commercial use of the generated audio output.

You do not owe royalties to Microsoft for the audio you generate. However, you are responsible for ensuring that your content complies with applicable laws and platform rules (for example, YouTube’s policies), and that you respect any specific voice usage restrictions. Some voices, especially certain branded or limited-preview voices, may have additional use limitations, so you should verify that the specific voice you are using does not carry extra restrictions.

The relevant licensing terms are in Microsoft’s Product Terms for Azure. Azure Cognitive Services, which includes Speech Services, is covered here:

https://www.microsoft.com/licensing/terms/productoffering/MicrosoftAzure/MCA

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin

KRJ14 0 Reputation points

2026-03-01T12:35:54.6733333+00:00

Thank you so much for your reply.

However, when I read the terms and conditions link which you've given I found a contradictory statement.

It says there:

"TTS Service output use rights: For Customers of the paid tier TTS Service only, Customer may use the audio output of prebuilt neural voices generated using the TTS Service, including for commercial purposes."

which reads like free tier cannot be used for commercial purposes or am I missing something?

Please guide me.
Marcin Policht 103.6K Reputation points MVP Volunteer Moderator

2026-03-03T12:08:41.4033333+00:00

That's a valid point - something I apparently missed. Apologies for the confusion. Indeed, the wording you provided (“For Customers of the paid tier TTS Service only”) means that the commercial usage right for prebuilt neural voices is explicitly granted only to paid tier customers. When a contract grants a right to one specific group (“paid tier only”), it implicitly excludes others. So under that wording, free tier users are not granted the commercial use right for prebuilt neural voices.

Btw. this is not about royalties or ownership. It's about whether Microsoft grants you the license to commercially exploit the generated output. In contract interpretation, if a right is expressly limited to paid tier customers, you should assume it does not apply to free tier usage unless another clause clearly grants that right more broadly.

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin
KRJ14 0 Reputation points

2026-03-03T15:50:45.5333333+00:00

Thank you so much for your reply. I understood. My doubt is cleared now.
Marcin Policht 103.6K Reputation points MVP Volunteer Moderator

2026-03-03T17:40:30.41+00:00

You're welcome

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin