GoogleZ.aiVideo model matchup
Veo 3.1vs.CogVideoX1.5-5B I2V
CogVideoX1.5-5B I2V has no LMArena rating yet.
Veo 3.1
Place 10 of 23
CogVideoX1.5-5B I2V
Veo 3.1
Place 10 of 21
CogVideoX1.5-5B I2V
Veo 3.1
CogVideoX1.5-5B I2V
Veo 3.1
CogVideoX1.5-5B I2V
Choose Veo 3.1 for
Choose CogVideoX1.5-5B I2V for
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.
Veo 3.1
Run details
fal.ai. fal-ai/veo3.1. 16:9, one request, first output, requested 6 s, seed provider random, request {"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":"6s","resolution":"720p","generate_audio":false}, configured price estimate $1.20.
Generated Aug 24, 2026. Source
CogVideoX1.5-5B I2V
No clip: this task has not yet been tested for the model.
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 | Veo 3.1 | CogVideoX1.5-5B I2V |
|---|---|---|
| Performance | ||
| Text to videoLMArena rating | 1,364Place 10 of 23 | n/a |
| Image to videoLMArena rating | 1,398Place 10 of 21 | n/a |
| Cost | ||
| Price per second | $0.40 | n/a |
| Price per 5 s clip | $2.00 | n/a |
| Output | ||
| Resolution | 1080p | bis 1360 px lange Seite; kurze Seite mindestens 768 px |
| Longest clip | 8 s | 6 s |
| Soundgenerated by the model | yes | n/a |
| Access | ||
| Weights | proprietary | open |
| Parameters | n/a | 5B |
| Routes | API, web | local |
| Released | Oct 15, 2025 | Nov 8, 2024 |
| Status | availableGenerally available on Vertex AI as veo-3.1-generate-001 (retirement no earlier than November 17, 2026); the Gemini API preview veo-3.1-generate-preview was deprecated by Google for October 22, 2026 | available |
Prices: public API price of the documented standard configuration; resolution and sound can change it
Veo 3.1 and CogVideoX1.5-5B I2V in the field
Every video model of our comparison with a rating, both models of this matchup highlighted.
Text to video
Rating from anonymous comparisons in the LMArena · higher is better
As of September 22, 2026 · Source: LMArena
Image to video
Rating from anonymous comparisons in the LMArena · higher is better
As of September 22, 2026 · Source: LMArena
Is there a better choice?
Text to video 1,516, Place 1 of 23. $0.51 per 5 s clip.
Veo 3.1 vs. Gemini Omni 1.1 FlashSources and method
Show 6 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.
- LMArena, Text to video, checked Sep 22, 2026
- LMArena, Image to video, checked Sep 22, 2026
- Veo 3.1, specifications, checked Nov 1, 2026
- Veo 3.1, price, checked Nov 1, 2026
- Veo 3.1, Status, checked Nov 1, 2026
- CogVideoX1.5-5B I2V, specifications, checked Nov 1, 2026
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