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Pyyan / Compare / Runway Gen-4.5 vs LTX-2.5

Runway Gen-4.5 vs LTX-2.5

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Video Models · verified 2 Sept 2026

RRunway Gen-4.5Runwaycurrent
LLTX-2.5Lightrickscurrent
3 slots left
SpecificationRunway Gen-4.5LTX-2.5
SummaryBest control surface for real production.Open weights, 4K HDR, and picture and sound generated together rather than stitched.
Arena Elo—Not rated
Native audioPartialYes, generated jointly
Max length—10s per shot, multishot scenes
Open weights—Yes
CategoryVideo ModelsVideo Models
OfficialRunway ↗—

Highlighted rows are where these differ.

Runway Gen-4.5

  • Film-production ecosystem nothing else matches

Best for film production.

Full spec sheet →

LTX-2.5

  • 22B asymmetric dual-stream diffusion transformer that generates video and audio jointly
  • Native multishot scenes, automatic duration and 4K HDR output
  • Free for commercial use under $10M revenue, and a day-one ComfyUI integration

Best for open weight video with audio.

Full spec sheet →