# 字节跳动7月初发布Seedance 2.5视频生成模型，生成长度翻倍至30秒

- 来源：Deedy (@deedydas)
- 发布时间：2026-06-27 22:00
- AIHOT 分数：34
- AIHOT 链接：https://aihot.virxact.com/items/cmqwgh3rh00bfsly0yjhyey98
- 原文链接：https://x.com/deedydas/status/2070869860314476977

## AI 摘要

字节跳动将于7月初发布视频生成模型Seedance 2.5，将生成长度从15秒翻倍至30秒，支持音频+4K视频；参考图片/音频/视频数量提升至50个以上；支持局部编辑（特定角色、闭合、细节），附带版权过滤。其前代Seedance 2已是视频生成模型第一名，ARR达20亿美元，定价$2.5/15秒，累计生成超330万小时视频。对比时间线：Veo 3（2025年5月）首降音视频生成15秒，Kling 3（2026年1月）15秒，Seedance 2（2026年2月）15秒，Seedance 2.5（2026年7月）30秒。中国视频模型持续扩大对美国的领先优势。

## 正文

Bytedance is dropping the best video gen model in the world in early July: Seedance 2.5!

The video below (audio on) is the launch video from their Volcano Engine conference this week. It cements China’s absolute dominance in video.

— 2x’d generation length of all previous models to 30s, with audio + 4k video
— >5x’d reference images / audio / video to 50
— Allows localized editing (specific characters, closing, detail), will come with copyright filter

Seedance 2 is already the #1 video model and does a whopping $2B in ARR, in a mere 4.5mos! At the current pricing of $2.5/15s, that implies >3.3M hours of video (!) have been generated. That’s 3x every feature film ever made and dozens of Netflixes. Only 3 US AI startups make more revenue.

We are 2x’ing realistic video gen length every 6mos.
— May 2025: Veo 3 does audio + video for the first time, 15s
— Jan 2026: Kling 3 does 15s
— Feb 2026: Seedance 2 does 15s, big quality bump
— July 2026: 2.5 will do 30s
In 18mos, entire music videos will be oneshotted by AI.

China continues to extend its lead on video models vs America.