The Video Layer

Test evidence · 2026-08-01

xAI Grok Imagine Video 1.5

Original output archived

Short-clip generative video model

In the August 1, 2026 test, xAI Grok Imagine Video 1.5 generated a 15.04-second clip in 2 minutes 1 second. The normalized generation time was 8 minutes 3 seconds per finished minute, but the model could not satisfy the one-minute task in one generation.

Original result

See what was reviewed.

Generation2 minutes 1 seconds
Output15.04 seconds
Normalized8 minutes 3 seconds / min
Visual3/10
Cost$15.00 per generated minute at the 1080p API rate

Shared task

Benchmark brief

Create a one-minute explainer video that explains quantum superposition in simple terms for a general audience.

Workflow

Short-clip generative video model

xAI documents a 1–15 second duration range for Grok Imagine Video 1.5. It cannot complete the one-minute task in one generation.

Review

Visual explanation finding

One animated three-panel diagram is relevant, but it stays mostly static, depends on labels, and conflates wave-particle duality with superposition. The score remains provisional because no blinded multi-reviewer sheet exists.

Review status: provisional manual. See the visual-scoring rubric →

What the output shows

The clip contains a relevant diagram, but its 15-second maximum is the controlling limitation. A sequence of separate clips could make a longer video, but that would not be the same one-shot task.

File record

Output metadata

  • MP4 container · 4,386,005 bytes
  • 15.041667 seconds
  • H.264 video · 1920×1088 · 24 fps
  • AAC audio · 48 kHz · stereo

ffprobe reading of the archived file

SHA-256c3390f8f71a15ddf46239b74bbe54460359c99e9a30cc47b5ca87b3f90c8ec5f

Primary sources

Links used