Klear: AI that makes video and sound move in sync

Kari Jaaskelainen

08 Jan 2026 — 1 min read

Meet Klear, a research system for generating video and audio together — with lips, speech, and actions that line up.

The team tackles three common pain points in A/V generation: off-sync sound, weak lip–speech matches, and quality drops when one modality dominates.

One unified model: a single-tower design with full audio–video attention keeps timing tight and scales cleanly.
Smarter training: progressive multitask learning (with modality masking and a curriculum) builds robust, aligned A/V representations and avoids unimodal collapse.
Better data: a new large-scale set of tightly aligned audio–video clips with dense captions, built by an automated pipeline that filters millions of examples.

The authors report high-fidelity, instruction-following generation in joint or audio-only/video-only modes, strong generalization to new scenarios, and large gains over prior open methods — with performance comparable to Veo 3.

Paper: https://arxiv.org/abs/2601.04151

Paper: https://arxiv.org/abs/2601.04151v1

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