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Legacy evaluation · V1

Veo 3.1 Fast vs Infinity Star

By Megaton TeamJuly 22, 2026

Veo 3.1 Fast is the better overall choice over Infinity Star. It scores higher in nearly every quality category shown.

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Veo 3.1 Fast
Infinity Star
Our verdict

Veo 3.1 Fast is the better choice

Veo 3.1 Fast scores higher than Infinity Star in nearly every quality category shown. Its biggest lead is in text rendering, and it also is the only model here with audio output.

Google

Google

Veo 3.1 Fast

51.0Overall score
Rank
—
Price per minute
$6.00/min
FoundationVision (ByteDance)

FoundationVision (ByteDance)

Infinity Star

24.0Overall score
Rank
—
Price per minute
$0.84/min

Best for

Highest overall score

Veo 3.1 Fast

Veo 3.1 Fast leads the overall score by 27.0 points.

The overall score does not measure file reliability.

Best for

More readable text

Veo 3.1 Fast

Veo 3.1 Fast leads by 46.0 points.

Long or moving text still needs manual review.

Best for

Lower generation cost

Infinity Star

Infinity Star runs $0.84/min, against $6/min for Veo 3.1 Fast.

Provider prices can change.

Best for

Built-in audio

Veo 3.1 Fast

Veo 3.1 Fast generates audio with the video; Infinity Star does not.

This comparison does not score audio quality.

92
videos rated
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measurements
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ratings
July 22, 2026
last updated

Reviewer scores

Scores by category

Veo 3.1 Fast wins 10 of 12 categories head-to-head. Each bar is the reviewer score out of 100.

Biggest gapText Fidelity: Veo 3.1 Fast ahead by 46.0 points.
Closest categoryPrompt Adherence: Infinity Star ahead by 4.0 points.

Head-to-head scores

12 categories rated head-to-head

Veo 3.1 FastInfinity Star
Physics
45.7
14.5
Prompt Adherence
44.0
48.0
Logic Consistency
41.5
23.8
Scene Consistency
50.7
23.4
Cinematography
53.4
29.6
2D Animation
27.7
9.7
3D Animation
15.0
25.7
Human
55.3
25.0
Actor Performance
56.3
34.7
Objects
57.6
26.0
Animals
55.1
39.4
Text Fidelity
47.7
1.7

Side-by-side video tests

Matched outputs, side by side

Each row uses the same evaluation input for both models. The underlying prompt and decision record are reserved for the full report.

Video test 1

Text

Spelling, letter shape, spacing, and whether the words remain stable while the scene moves.

Related category score

Veo 3.1 Fast leads here by 46.0 points.

Matched Text outputs from Veo 3.1 Fast and Infinity Star
Loading video
Veo 3.1 Fast
Loading video
Infinity Star

Video test 2

Physics

Weight, contact, momentum, and whether objects continue to behave consistently from frame to frame.

Related category score

Veo 3.1 Fast leads here by 31.2 points.

Matched Physics outputs from Veo 3.1 Fast and Infinity Star
Loading video
Veo 3.1 Fast
Loading video
Infinity Star

Video test 3

Cinematography

Framing, camera movement, lighting continuity, and whether the visual treatment follows the prompt.

Related category score

Veo 3.1 Fast leads here by 23.7 points.

Matched Cinematography outputs from Veo 3.1 Fast and Infinity Star
Loading video
Veo 3.1 Fast
Loading video
Infinity Star

Capabilities

Inputs and outputs

See full Veo 3.1 Fast detailsSee full Infinity Star details
CapabilityVeo 3.1 FastInfinity Star
Text inputYesYes
Image inputYesYes
Video inputYesNo
Audio inputNoNo
Image outputNoNo
Audio outputYesNo

FAQ

Common questions

Is Veo 3.1 Fast better than Infinity Star?

Veo 3.1 Fast is better overall and leads most quality categories.

Is Veo 3.1 Fast cheaper than Infinity Star?

Infinity Star costs less at $0.84 per minute, compared with $6 for Veo 3.1 Fast.

Does Veo 3.1 Fast generate audio?

Yes, Veo 3.1 Fast includes audio output.

Does Infinity Star generate audio?

No, Infinity Star does not include audio output.

Which model makes longer clips, Veo 3.1 Fast or Infinity Star?

Veo 3.1 Fast supports longer clips at 8 seconds, compared with 5 seconds for Infinity Star.

Which model scores higher on Text Fidelity, Veo 3.1 Fast or Infinity Star?

Veo 3.1 Fast scores higher for text rendering.

Which model scores higher on Hands, Veo 3.1 Fast or Infinity Star?

Veo 3.1 Fast scores higher for hands.

How are Veo 3.1 Fast and Infinity Star compared?

Megaton gives both models the same prompts and compares the resulting videos. Price, audio support, and maximum clip length are also checked.

Continue researching

Veo 3.1 Fast

Infinity Star

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Kling 3 Pro vs Veo 3.1Kling AI (Kuaishou)Google76.0 / 63.0
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Veo 3.1 vs Gen-4.5GoogleRunway63.0 / 61.0

Methodology

How we tested Veo 3.1 Fast and Infinity Star

We score two things separately: how good the video looks to a reviewer, and how reliably the file itself holds up. A model can make great-looking footage and still deliver clips with freezes, bad framing, or unstable motion.

We test every model with v-benchmark v2.0, our benchmark for AI video models — the same prompts, professional reviewers, and automated reliability checks behind every score here.

Reviewer scores
Both models receive the same prompts. Professional reviewers score how well each video follows the prompt and handles motion, composition, people, objects, animals, animation, and on-screen text. Scores use a 0-100 scale.
File reliability
Automated checks review 0 clips for freezes, bad framing, compression problems, unstable motion, distorted geometry, exposure problems, and invalid file properties.
Missing scores
Categories with a score for only one model are shown but excluded from the head-to-head win count. Price and generation speed stay separate because they use different units.
Last updated
Reviewer scores and rankings use results from July 22, 2026. Reliability results use the latest completed test for each model. Provider prices and rankings can change.
How v-benchmark v2.0 worksView the complete leaderboardRead model evaluation reports
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