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Legacy evaluation · V1

Veo 3 Fast vs Gen-4.5

By Megaton TeamJuly 22, 2026

Veo 3 Fast is the better overall choice over Gen-4.5. It scores higher in nearly every quality category shown and costs less.

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Veo 3 Fast
Gen-4.5
Our verdict

Veo 3 Fast is the better choice

Veo 3 Fast scores higher than Gen-4.5 in nearly every quality category shown. Its biggest lead is in actor performance, and it also costs less.

Google DeepMind

Google DeepMind

Veo 3 Fast

48.0Overall score
Rank
—
Price per minute
$6.00/min
Runway

Runway

Gen-4.5

40.0Overall score
Rank
#13
Price per minute
$7.20/min

Best for

Highest overall score

Veo 3 Fast

Veo 3 Fast leads the overall score by 8.0 points.

The overall score does not measure file reliability.

Best for

More readable text

Veo 3 Fast

Veo 3 Fast leads by 14.5 points.

Long or moving text still needs manual review.

Best for

Lower generation cost

Veo 3 Fast

Veo 3 Fast runs $6/min, against $7.20/min for Gen-4.5.

Provider prices can change.

Best for

Built-in audio

Veo 3 Fast

Veo 3 Fast generates audio with the video; Gen-4.5 does not.

This comparison does not score audio quality.

122
videos rated
3,538
measurements
488
ratings
July 22, 2026
last updated

Reviewer scores

Scores by category

Veo 3 Fast wins 10 of 11 categories head-to-head. Each bar is the reviewer score out of 100.

Biggest gapActor Performance: Veo 3 Fast ahead by 18.7 points.
Closest categoryPrompt Adherence: Veo 3 Fast ahead by 1.0 points.

Head-to-head scores

11 categories rated head-to-head

Veo 3 FastGen-4.5
Physics
42.0
37.4
Prompt Adherence
48.0
47.0
Logic Consistency
40.7
35.6
Scene Consistency
50.0
38.1
Cinematography
48.7
44.0
2D Animation
37.7
41.0
3D Animation
51.3
38.5
Actor Performance
56.7
38.0
Objects
53.9
42.4
Animals
46.0
40.2
Text Fidelity
45.0
30.5

Technical reliability

How reliably does each model deliver clean video?

These checks look for freezes, bad framing, compression problems, and unstable motion. They are kept separate from the reviewer scores above.

Veo 3 Fast
122 videos rated · Jul 2026
Gen-4.5
No reliability results available

File reliability checks

Playback, framing, and motion stability

Veo 3 FastGen-4.5
Technical cleanliness
49.0%
Not published

Clips with no freezes, bad framing, or severe compression problems.

Freeze-free playback
88.0%
Not published

Clips that play without stalls or frozen frames.

Clean framing
80.0%
Not published

Clips without unexpected black bars or cropped edges.

Motion stability
66.0
Not published

How consistently surfaces hold their shape and texture while moving.

Edge stability
80.0
Not published

How consistently object outlines remain clean while moving.

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 Fast leads here by 14.5 points.

Matched Text outputs from Veo 3 Fast and Gen-4.5
Loading video
Veo 3 Fast
Loading video
Gen-4.5

Video test 2

Physics

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

Related category score

Veo 3 Fast leads here by 4.6 points.

Matched Physics outputs from Veo 3 Fast and Gen-4.5
Loading video
Veo 3 Fast
Loading video
Gen-4.5

Video test 3

Cinematography

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

Related category score

Veo 3 Fast leads here by 4.7 points.

Matched Cinematography outputs from Veo 3 Fast and Gen-4.5
Loading video
Veo 3 Fast
Loading video
Gen-4.5

Capabilities

Inputs and outputs

See full Veo 3 Fast detailsSee full Gen-4.5 details
CapabilityVeo 3 FastGen-4.5
Text inputYesYes
Image inputYesYes
Video inputNoYes
Audio inputNoNo
Image outputNoNo
Audio outputYesNo

FAQ

Common questions

Is Veo 3 Fast better than Gen-4.5?

Veo 3 Fast is better overall and leads most quality categories.

Is Veo 3 Fast cheaper than Gen-4.5?

Veo 3 Fast costs less at $6 per minute, compared with $7.20 for Gen-4.5.

Does Veo 3 Fast generate audio?

Yes, Veo 3 Fast includes audio output.

Does Gen-4.5 generate audio?

No, Gen-4.5 does not include audio output.

Which model makes longer clips, Veo 3 Fast or Gen-4.5?

Gen-4.5 supports longer clips at 10 seconds, compared with 8 seconds for Veo 3 Fast.

Which model scores higher on Actor Performance, Veo 3 Fast or Gen-4.5?

Veo 3 Fast scores higher for actor performance.

Which model scores higher on Text Fidelity, Veo 3 Fast or Gen-4.5?

Veo 3 Fast scores higher for text rendering.

How are Veo 3 Fast and Gen-4.5 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 Fast

Gen-4.5

More comparisons

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Browse more head-to-head results, including scores, prices, and side-by-side video tests.

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Kling 3 Pro vs Gen-4.5Kling AI (Kuaishou)Runway76.0 / 40.0
Veo 3.1 vs Gen-4.5GoogleRunway63.0 / 40.0
Kling 3 Pro vs Veo 3.1Kling AI (Kuaishou)Google76.0 / 63.0

Methodology

How we tested Veo 3 Fast and Gen-4.5

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 122 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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