TikTok has upgraded Symphony, its generative AI creative suite for advertisers, extending AI video generation to 30 seconds from 15 seconds and letting advertisers outside North America purchase BytePlus tokens to access Dreamina Seedance AI models within the tool.

According to the company’s announcement, the update centers on “Symphony Agent,” a feature in Symphony Creative Studio that turns a brief into a video through a few prompts. TikTok says the agent draws on data from top-performing ads, TikTok trends, and a brand’s goals to produce videos built for the platform. With the integration of the Dreamina Seedance 2.5 model, advertisers can now upload up to 50 multimodal references, including images, videos, and audio, up from nine previously, and apply timestamp-specific creative direction to control sequence, pacing, and scene flow.

TikTok says the longer format lets advertisers “build fuller narratives that match how community-native creatives actually unfold.” The company also says the model produces sharper, more realistic imagery and better preserves lighting, motion, and character consistency across a video.

TikTok is also expanding Symphony API, the suite’s integration layer for brands and agencies that run their own toolkits or tech stacks. The upgraded API bundles Dreamina Seedance video-generation models, Symphony Agent, the Trends Library, and video editing and extension tools, allowing advertisers, agencies, and partners to build multiple creative use cases into their existing workflows.

Under the new BytePlus integration, advertisers connect a BytePlus account inside Symphony and buy tokens there directly. They can use the tokens alongside existing Symphony credits and choose which balance to draw from when both are available. TikTok says the arrangement offers faster video generation, higher-quality output, and more formats. The company lists availability in all countries where TikTok Ads Manager and BytePlus operate, excluding the United States.

Source: TikTok

Symphony also includes Creative Studio, TikTok’s end-to-end platform for ideating and generating ad creatives, and Symphony Automation, which sits inside TikTok Ads Manager workflows and is intended to help advertisers scale creative and counter creative fatigue.

On safeguards, TikTok says Symphony runs moderation checks on prompts, reference inputs, and generated content to screen for harmful material and unauthorized use of likeness or intellectual property. Real face uploads are blocked, and that coverage now extends to the expanded range of image, video, and audio references. Symphony-made content carries AI labels and invisible watermarking, along with C2PA Content Credentials, which help other platforms identify AI-generated content made with TikTok’s tools. The company also applies moderation filters from an unnamed third-party safety partner.

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