---
title: "Kling AI 4.0 adds 30-second clips, stereo audio and lip sync"
url: https://www.parallelquant.com/posts/kling-ai-4-0-adds-30-second-clips-stereo-audio-and-lip-sync-e225ca
source_name: "The Decoder"
source_url: https://the-decoder.com/kling-ai-drops-version-4-0-with-stereo-audio-multilingual-lip-sync-and-a-lighter-flash-variant/
published: 2026-10-19T17:36:26.000Z
topics: ["products"]
publisher: "Parallel Quant"
---

# Kling AI 4.0 adds 30-second clips, stereo audio and lip sync

*2026-10-19 · Source: [The Decoder](https://the-decoder.com/kling-ai-drops-version-4-0-with-stereo-audio-multilingual-lip-sync-and-a-lighter-flash-variant/)*

Kling 4.0 supports clips up to 30 seconds, ten keyframe images as input, 8,000-token prompts, stereo audio and multilingual lip sync, plus a lighter Flash variant. Against Wan 3.0 and Seedance 2.5 it holds its own without pulling ahead.

**Why it matters:** Near parity among the top video generators suggests rapid gains are levelling off, so competition shifts to length, audio and cost. Longer clips with keyframe control make the tools more usable in production workflows.

**Topics:** products

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Read the original: https://the-decoder.com/kling-ai-drops-version-4-0-with-stereo-audio-multilingual-lip-sync-and-a-lighter-flash-variant/
Canonical: https://www.parallelquant.com/posts/kling-ai-4-0-adds-30-second-clips-stereo-audio-and-lip-sync-e225ca
Published by Parallel Quant — https://www.parallelquant.com