Video models such as Veo 3 can pretty accurately generate about eight seconds of video that, by eye and at a glance, looks consistent.

True if, as of July 2025, Veo 3 generated clips of about eight seconds (for example 8-second outputs) that reviewers or benchmarks generally described as visually consistent and physically plausible. Mostly true if the clip length was a little different (for example 5–10 seconds) or consistency was good with minor artefacts. Mixed if eight-second clips were possible but reviewers often reported clear inconsistencies. Mostly false if Veo 3 typically could not produce coherent clips of about that length. False if Veo 3 did not generate clips of about eight seconds, or its outputs were generally incoherent.

Set before the research began.

1. E1 AI video just took a startling leap in realism. Are we doomed? Ars Technica · 29 May 2025

   “Last week, Google introduced Veo 3, its newest video generation model that can create 8-second clips with synchronized sound effects and audio dialog—a first for the company’s AI tools.”

2. E2 AI video just took a startling leap in realism. Are we doomed? Ars Technica · 29 May 2025

   “Overall, Veo 3 appears to have far greater temporal coherency (having a consistent subject or theme over time) than the earlier video synthesis models we’ve tested. But of course, it’s not perfect.”

3. E3 Google Flow VEO 3: User Experience Report (May 2025) - jeffbullas.com jeffbullas.com · 2 June 2025

   “Short clips vs. long narratives: VEO 3, like many generative video models, is currently optimized for short clips (around 5–10 seconds).”

4. E4 [PDF] Veo-3-Tech-Report.pdf - Googleapis.com Google DeepMind (hosted on storage.googleapis.com) · 24 August 2026 Own record

   “First, while much better than previous Veo models, Veo 3 is still poor at generating text (a necessary skill for many misuse scenarios), and is generally prone to small hallucinations that mark videos as clearly fake.”

Ars Technica reports that Veo 3 makes 8-second clips (E1). It also says the model has far greater temporal coherency than earlier models but is "not perfect" (E2). A user report says Veo 3 is optimized for clips of about 5–10 seconds (E3). Google's own technical report says Veo 3 is still prone to small hallucinations (E4), so the clips are of the claimed length and largely consistent, with minor artefacts.