Seedance 2.5 Spotted in Jimeng with 180s Video Support Before Delay

The Seedance 2.5 video generation model was originally planned for an imminent release but faced a last-minute delay. Prior to the delay, the model had appeared in the Jimeng UI for testing, sparking widespread community interest due to its massively expanded video generation length.

Key Details and Capability Upgrades

Several users discovered traces of Seedance 2.5 within the Jimeng interface, introducing a new mode called "Ultra-Long Video (Beta)." This mode increases the maximum video generation length from the standard 30 seconds to up to 180 seconds (3 minutes). According to @aziz4ai, this leap in duration signifies a shift in the core bottleneck of video generation, suggesting that the bigger challenge now is having a compelling story to tell.

Reversal and Release Delay

Although users like @koltregaskes initially speculated that an official release was imminent based on the UI exposure—and some even claimed it had begun rolling out globally with early access—the situation quickly reversed. @bdsqlsz and @koltregaskes later noted that multiple sources confirmed Seedance 2.5 was delayed at the last minute, and notification emails had already been sent out. Currently, no specific reasons for the delay or a new launch timeline have been officially provided.

2026-07-09 ~ 2026-07-10 · 9 related posts

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