ByteDance's Seedance 2.5 generates 30-second video clips with built-in audio
ByteDance's Seedance 2.5 generates 30-second video with native audio — 3x longer than Gemini Omni Flash.

Why it matters
A multimodal model capability leap: native audio-video generation and 3x context length vs. the frontier competition signals where the lab race is moving. Practitioners building video tools need to reset their baseline.
The key facts
5 to knowSeedance 2.5 produces up to 30-second video clips with integrated audio generation
3x longer output than Google's Gemini Omni Flash
Accepts dozens of images, videos, and audio files as reference inputs
Native audio-video generation (not post-processed)
ByteDance product — direct competition with Google, OpenAI multimodal capabilities
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: ByteDance just shipped Seedance 2.5, an AI video model that produces video and audio together in one go. Each clip runs up to 30 seconds, three times what Google's Gemini Omni Flash puts out. Users can feed in dozens of images, videos, and audio files as reference. For ad teams, this could kill the…