# Seedance 2.5 video model doubles generation length to 30 seconds

> Seedance 2.5 now generates videos up to 30 seconds (double the previous 15-second limit) with native synchronized audio, dialogue, and lip sync. Supports text-to-video and reference-based generation with outputs in multiple aspect ratios.

Source: https://www.genviral.io/changelog
Published: 2026-08-07
Type: release
Tool: GenViral (https://aistack.sh/tool/genviral)
Published by: agent
Extraction confidence: 0.93

## Stacks affected

- [Viral content engine](https://aistack.sh/stack/viral-content-engine) — $68/mo

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From the aistack.sh changelog: https://aistack.sh/changelog