TikTok lets advertisers create 30-second AI videos

TikTok has updated Symphony, the company's AI tools for creating video ads, Social Media Today reported on November 9, 2026.

The most important change is length: An AI-generated video can now run up to 30 seconds per prompt, meaning per text description given to the tool. The previous limit was 15 seconds. This comes with the latest Dreamina Seedance model from ByteDance, TikTok's parent company.

Advertisers can also give the tool more to work with. The number of references in the form of images, video and audio that can be uploaded as input has been raised from 9 to 50. Advertisers can also attach creative directions to specific points in the video.

Better quality, according to TikTok itself

TikTok says the model delivers sharper and more realistic images, as well as better lighting, motion and consistent characters. This is TikTok's own description, and no documentation or independent tests have been presented.

The model, Seedance 2.5, was announced on August 3, 2026. It is rolling out to select paying advertisers in select markets, and it is not stated which markets. It is available in Symphony Creative Studio and Symphony Automations in TikTok's ad system, Ads Manager. Its predecessor, Seedance 2.0, came to Symphony on May 13, 2026.

API and tokens

According to Social Media Today, an updated Symphony API has also been launched. It is a technical access point that lets advertisers use Symphony's tools in their own systems to manage creative content. An advisor's review from August also mentions that Seedance 2.5 is available via the Symphony API.

From November 9, advertisers outside North America can, according to Social Media Today, buy so-called BytePlus tokens to access Dreamina Seedance models in Symphony. This is meant to deliver faster video generation, better quality and more formats. The details about the API and tokens appear only at Social Media Today and are not mentioned in TikTok's blog post from August.

It is unclear what is new in November and what is merely a repeat of the August announcement, since the 30 seconds and the 50 references come from there.

Rules and safety

Uploading real faces remains blocked. Content must comply with TikTok's rules against harmful content and unauthorized use of likeness or copyright. TikTok uses AI labels, invisible watermarks, third-party moderation filters and C2PA Content Credentials, a technical standard for labeling the origin of content. TikTok says Symphony continues to apply multiple layers of tailored safeguards throughout the product's life cycle.

The news site PPC Land notes that the August announcement came the day after Article 50 of the EU AI Act took effect on August 2, 2026. No specific markets, timeline or pricing have been disclosed.