TikTok Dreamina Seedance 2.5: discover what’s new
Fermer

Help us prepare for our appointment

    Surname
    First name
    Tel
    Website
    Email
    Company*
    Leave your message, specifying current budget or acquisition lever if possible
    Fermer Menu
    ×
    Home / Publications / Social Ads

    TikTok is enhancing its AI-powered video creation with Dreamina Seedance 2.5

    Learn more about our expertise Social Ads 04/08/2026 4 min. reading mm Davidson

    TikTok is continuing to develop its advertising tools with the integration of Dreamina Seedance 2.5 into Symphony. This new version of the video-generation model developed by ByteDance offers longer videos, greater creative control and improved visual quality. It also comes with new features designed to enhance transparency around content generated by artificial intelligence.

    Dreamina Seedance 2.5: TikTok boosts its AI-powered video creation

    Key points:

    1. Videos up to 30 seconds
      long 👉 Dreamina Seedance 2.5 now allows you to generate 30-second videos, up from 15 seconds previously.
    2. Greater control over video generation
      👉 Advertisers can use up to 50 multimodal prompts and add instructions at specific points in the video.
    3. Enhanced
      visual quality 👉 TikTok has announced more realistic images, as well as improved preservation of lighting, movement and character consistency.
    4. AI with safeguards
      in place 👉 AI labels, invisible watermarks, moderation controls and C2PA technology accompany this update.
    5. A phased
      roll-out 👉 Dreamina Seedance 2.5 is currently being rolled out to selected paying advertisers in certain markets.

    In summary, TikTok is enhancing Symphony’s creative capabilities whilst strengthening the transparency and safety mechanisms surrounding generative AI.

    The integration of Dreamina Seedance 2.5 forms part of TikTok’s strategy to expand the creative capabilities offered by Symphony. The platform is highlighting both the model’s new features and the measures designed to regulate their use.

    Dreamina Seedance 2.5 offers greater creative control

    TikTok is integrating Dreamina Seedance 2.5 into Symphony, its suite of creative tools for advertisers.

    The main new feature concerns the length of the videos generated. It is now possible to create videos of up to 30 seconds, compared with 15 seconds previously.

    The model also supports up to 50 multimodal inputs (images, videos and audio files), compared with 9 in the previous version.

    Another new feature is that advertisers can add creative instructions at specific points in the video. According to TikTok, this feature offers greater precision regarding the sequence of scenes, the pace and the progression of the content.

    Finally, Dreamina Seedance 2.5 improves the visual quality of the videos it generates. TikTok states that the model produces sharper and more realistic images. It also does a better job of maintaining lighting, movement and character consistency throughout the video.

    According to the company, these developments enable the model to better understand a product’s context, its proportions and the composition of scenes.

    TikTok is also strengthening its responsible AI measures

    The announcement is not solely about the model’s performance.

    TikTok is also highlighting the features that come with this new version of Symphony.

    The company points out that its tools are based on its principles of Responsible AI, which are founded in particular on security, transparency and accountability.

    Several measures are highlighted:

    • checks carried out on prompts, references and generated content;
    • a ban on imports of real faces;
    • protections against unauthorised use of intellectual property;
    • labels indicating that content has been generated by AI;
    • an invisible watermark that allows content created with Symphony to be identified;
    • the integration of C2PA Content Credentials technology, designed to make it easier to identify AI-generated content on other platforms.

    TikTok also states that Dreamina Seedance 2.5 is available in Symphony Creative Studio, Symphony Automations in TikTok Ads Manager, and via the Symphony API.

    What this means for advertisers

    This update expands the range of options available to advertisers using Symphony.

    Longer videos allow for more comprehensive narratives. Multimodal prompts and step-by-step instructions also offer greater control over content generation.

    The announcement also shows that TikTok is seeking to combine these new capabilities with transparency measures. The content creation tools are therefore evolving alongside mechanisms designed to identify AI-generated content.

    This announcement comes at a time when several platforms, such as Snapchat, Pinterest, Reddit and X, have recently taken steps to limit the dissemination of certain AI-generated content.

    Expert advice

    Dreamina Seedance 2.5 illustrates the evolution of the advertising creation tools offered by platforms.

    For advertisers, these new features are, above all, a way of expanding the possibilities offered by generative AI. They do not replace creative thinking or a campaign’s marketing objectives.

    The challenge, therefore, is to integrate these tools into an overall strategy, whilst remaining mindful of changes to the transparency rules applicable to AI-generated content.

    Conclusion

    With Dreamina Seedance 2.5, TikTok is expanding the creative capabilities offered by Symphony. Longer videos, greater creative control and improved visual quality are accompanied by a range of features designed to enhance transparency around generative AI.

    The roll-out is currently limited to selected paying advertisers in certain markets. It nevertheless confirms TikTok’s commitment to continuing the development of its AI-powered creative tools.

    Our TikTok Ads agency supports advertisers in designing, testing and optimising their TikTok campaigns, with a view to combining creative innovation with business performance.

    FAQ – TikTok Dreamina Seedance 2.5

    What is Dreamina Seedance 2.5?

    Dreamina Seedance 2.5 is ByteDance’s latest video generation model integrated into TikTok Symphony. It allows advertisers to create longer videos, with greater control over the generation process.

    What’s new in Dreamina Seedance 2.5?

    This version supports 30-second videos, up to 50 multimodal prompts, creative instructions per sequence, and improved visual quality for generated videos.

    How does TikTok regulate AI-generated content?

    TikTok is accompanying this update with several transparency and security measures, including AI labels, an invisible watermark, moderation controls, safeguards against unauthorised use of intellectual property, and C2PA technology.

    Where is Dreamina Seedance 2.5 available?

    The model is currently being rolled out to selected paying advertisers in certain markets. It is accessible via Symphony Creative Studio, Symphony Automations and the Symphony API.

    Why is this announcement important for advertisers?

    It demonstrates that TikTok is continuing to develop Symphony’s creative capabilities whilst strengthening the measures designed to regulate the use of generative AI.

    Davidson
    Davidson
    Directeur Associé & Head of Display & Social Ads
    Ad's up Consulting