TikTok Symphony levels up with Dreamina Seedance 2.5

What's new in Symphony

Creativity on TikTok moves quickly, and the tools that support it need to keep moving too. Today, TikTok Symphony is building on that momentum with the integration of Dreamina Seedance 2.5, the newest generation of ByteDance's AI video model, to help advertisers tackle more ambitious creative ideas.

What this means for your brand

• Deeper storytelling: Symphony, integrated with Dreamina Seedance 2.5, now supports up to 30 seconds of video generation, up from a 15 second maximum before. That extra room lets advertisers build fuller narratives that match how community-native creatives actually unfold.

• Consistent production: Advertisers can now upload up to 50 multi-modal references (image, video, and audio), up from 9 previously, and apply timestamp-specific creative direction. That means more precision over sequence, pacing, and scene flow, and creative that's grounded in more product detail and context.

• Sharper creative: Visual quality takes a meaningful step up, with sharper, more realistic imagery and stronger preservation of lighting, motion, and character consistency across a video. Now, it reflects a more advanced understanding of product context, proportions, and scene composition, helping advertisers execute more ambitious ideas with a stronger finish.

Together, these upgrades work as one connected workflow within Symphony's broader toolset, giving advertisers more control over individual moments within a video and more confidence to expand what they create across campaign formats, all inside Symphony Creative Studio.

Responsible by design

Every model upgrade in Symphony is built on our Responsible AI Principles, which embed safety, privacy, fairness, transparency, and accountability into experience by design. Symphony continues to apply several layers of tailored safeguards across the full product lifecycle, including:

• Policies against harmful content and the unauthorized use of likeness or intellectual property, applied through multiple moderation checks on prompts, reference inputs, and generated content, with real face uploads blocked and coverage now extended to the expanded range of image, video, and audio references.

• AI labels that provide transparency to viewers, along with an invisible watermarking technology that helps us identify content made with Symphony

• Industry-partnered AI safety and labeling technologies, including additional moderation filters from a third-party safety partner, as well as C2PA Content Credentials, a technology that helps other platforms identify AI-generated content made with our tools

Less fixing. More creating.

The new integration marks a clear step toward the future of Symphony: helping advertisers unlock more creative possibilities, bring original ideas to life with less friction, and create TikTok-fit content that supports stronger campaign performance.

Symphony integrated with Dreamina Seedance 2.5 is now rolling out to select paid advertiser in select markets. It's available in your creation flow across Symphony Creative Studio, Symphony Automations in TikTok Ads Manager.