# JD.com Open-Sources Long Audio-Video Generation Framework JoyAI-Echo

- Category: Flash (快讯)
- Published: 2026-06-04T11:56:00.000Z
- Source date: 2026-06-04
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JD.com launches JoyAI-Echo, a long audio-video generation framework. Through four technical innovations including cross-modal memory banks, it addresses challenges in character consistency, voice stability, and generation speed, with benchmark results showing comprehensive leadership.

## At a glance

- JoyAI-Echo addresses character consistency, voice stability, and generation speed challenges through four technical innovations
- Benchmarks show high consistency in character and voice for 5-minute videos, 0.8646 speech accuracy, and 7.5x faster inference

## The update

JD.com has officially released the open-source long audio-video generation framework, JoyAI-Echo. The framework introduces four core technical innovations: a cross-modal audio-video memory bank, memory-driven post-training, Director Agent conversational editing, and lightweight real-time super-resolution. These technologies aim to overcome three major industry challenges: maintaining character consistency, controlling voice stability, and improving generation efficiency. Notably, memory-driven post-training increases inference speed by 7.5 times. Benchmark tests show that in five-minute videos generated using this framework, character appearance and voice timbre remain highly consistent, with a speech accuracy rate of 0.8646. All key performance indicators are leading the industry.

## Sources

- [京东黑板报](https://mp.weixin.qq.com/s/tISrnBhhxZnJmtbyfeB8sg) (2026-06-04)

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