StepFunxAIVideo model matchup
Step-Video-T2V Turbovs.Grok Imagine Video 1.5 Lite
Neither Step-Video-T2V Turbo nor Grok Imagine Video 1.5 Lite has an LMArena rating yet.
Step-Video-T2V Turbo
Grok Imagine Video 1.5 Lite
Choose Step-Video-T2V Turbo for
Choose Grok Imagine Video 1.5 Lite for
No clear advantage
Same prompt, both models
The first clip from a single request each, showing the first five seconds.
What to look for: Anatomy, object consistency, camera tracking, rain, and reflections. Sound muted, as the test protocol requires.
Step-Video-T2V Turbo
No clip: this task has not yet been tested for the model.
Grok Imagine Video 1.5 Lite
Run details
OpenRouter. x-ai/grok-imagine-video-1.5-lite. 16:9, one request, first output, prompt motion-and-physics, requested 5 s, audio off, request {"model":"x-ai/grok-imagine-video-1.5-lite","prompt":"Generate exactly one continuous five-second 16:9 cinematic video. A fictional bicycle courier in a mustard-yellow raincoat rides a red city bicycle from left to right across a rain-wet Hamburg street at blue hour for the entire clip. The camera tracks her smoothly at waist height. Both hands remain visible on the handlebars, the bicycle geometry stays physically correct, and a transparent umbrella fixed to the bicycle moves naturally in the wind. Wet-street reflections and raindrops follow realistic physics. No cuts, no slow motion, no text, no logos, no subtitles, and no audio.","aspect_ratio":"16:9","duration":5,"resolution":"720p","generate_audio":false}, live estimated cost $0.1500, actual cost $0.1500.
Generated Nov 1, 2026. Source
Show the prompt given to both models
Generate exactly one continuous five-second 16:9 cinematic video. A fictional bicycle courier in a mustard-yellow raincoat rides a red city bicycle from left to right across a rain-wet Hamburg street at blue hour for the entire clip. The camera tracks her smoothly at waist height. Both hands remain visible on the handlebars, the bicycle geometry stays physically correct, and a transparent umbrella fixed to the bicycle moves naturally in the wind. Wet-street reflections and raindrops follow realistic physics. No cuts, no slow motion, no text, no logos, no subtitles, and no audio.
Where is the difference?
Bar length shows the gap: for ratings full width from 60 points, for price from four times as much, for clip length from 20 seconds. Solid means clearly ahead, hatched slightly ahead, a thin grey bar level.
All data side by side
The better value is bold. For ratings only when the gap is clear.
| Metric | Step-Video-T2V Turbo | Grok Imagine Video 1.5 Lite |
|---|---|---|
| Output | ||
| Resolution | n/a | 1080p (aus 720p hochskaliert) |
| Longest clip | n/a | 15 s |
| Soundgenerated by the model | n/a | yes |
| Access | ||
| Weights | open | proprietary |
| Parameters | 30B | n/a |
| Routes | local | API, web |
| Status | available | available |
Prices: public API price of the documented standard configuration; resolution and sound can change it
Is there a better choice?
Text to video 1,516, Place 1 of 23. $0.51 per 5 s clip.
Step-Video-T2V Turbo vs. Gemini Omni 1.1 FlashSources and method
Show 2 sources and the method
Ratings come from the LMArena: people see two videos for the same prompt without knowing which model made them and pick the better one. Many such picks add up to a rating, higher is better. Text to video and image to video are separate lists and are never added together.
“Ahead” means one model stays clearly higher even with the rating’s uncertainty. “Slightly ahead” means its value is higher but the gap is not certain yet. Otherwise both count as level. Places count only the models of our comparison.
Prices and clip lengths come from the providers’ documentation. From a factor of 1.25 a model counts as cheaper or longer, below that as about the same.
- Step-Video-T2V Turbo, specifications, checked Nov 1, 2026
- Grok Imagine Video 1.5 Lite, specifications, checked Nov 1, 2026
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