Side by side
FLUX 3 vs Runway Gen 4.5
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
A single AI model to create realistic images, videos up to 20 seconds long, and native audio. Video generation includes native multilingual audio: dialogue, sound effects, and ambient sound are produced directly alongside the images, without the need for separate post-processing
AI video generator with physics simulation and cinematic control.
Primary task
Video Generators
Video generation
Pricing
Free
Paid · From $7.99 / mo
Pricing details
Free
From $7.99 / mo
Billing cycle
Not documented
Not documented
API access
Listed as available
Not documented
Platforms
Web
Web
Integrations
Not documented
Zoom
Source rating
Rating count unavailable
5.0 / 5 · 66 ratings
Catalog views
177k
0
Estimated monthly traffic
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Catalog imported
28 Aug 2026
27 Aug 2026
Listed strengths
- 20-second clips rendered in one generation
- Native audio: synced dialogue, sound effects, ambience
- Lip-synced speech in several languages
- Draft mode at roughly a third of full price
- Pay-as-you-go billing, no seat fees
No pros listed yet
Listed limitations
- Staged rollout: image model and open weights still pending
- Benchmarks are vendor-reported, awaiting independent testing
No limitations recorded; this does not mean none exist.