Which should you pick?
Flux 3 Text to Video is the cheaper job: 43-170 credits against 250-500 credits for Runway Gen-4.5. Those are the credits one complete generation costs, not a headline rate, so they are directly comparable even though the two models bill differently.
At their most expensive settings the gap widens: Runway Gen-4.5 tops out at 500 credits a job versus 170, driven by clip length.
Flux 3 Text to Video supports more aspect ratios (8: 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16, auto), giving it more format flexibility.
What a job costs
Runway Gen-4.5
250-500 credits
It bills per second of output, and the price moves with clip length.
- Price50 credits
Flux 3 Text to Video
43-170 credits
It bills per second of output, and the price moves with clip length.
- Price9 credits
All figures are Versely credits. Your plan's credit allowance is on the pricing page.
Spec comparison
| Spec | Runway Gen-4.5 | Flux 3 Text to Video |
|---|---|---|
| Provider | Runway | Black Forest Labs |
| Cost per job | 250-500 credits | 43-170 credits |
| Billing | per second of output | per second of output |
| Max resolution | — | 1080p |
| Aspect ratios | 16:9, 9:16, 4:3, 3:4, 1:1, 21:9 | 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16, auto |
| Durations | 5s, 10s | 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, 15s, 16s, 17s, 18s, 19s, 20s |
| Frame rates | — | — |
| Qualities | — | 720p, 1080p |
| Requires starting image | No | No |
| Accepts video input | No | No |
| Reference images | — | — |
| Leaderboard | #13 in text to video | Unranked |
| Released | Dec 1, 2025 | Aug 5, 2026 |
What each one does that the other doesn't
Only Runway Gen-4.5
image to video, image to video, cinematic, camera control
Only Flux 3 Text to Video
native audio, frontier, long duration, 1080p
Both list: text to video, text to video.
Leaderboard positions
Versely ranks each capability on its own leaderboard, so a position is only comparable between two models within the same row.
Runway Gen-4.5
- Text to video#13
- Image to video#22
Flux 3 Text to Video
Not on a Versely leaderboard yet.
Full Runway Gen-4.5 spec sheet →
Runway Gen-4.5 video generation with state-of-the-art quality, cinematic motion, and precise camera controls
Full Flux 3 Text to Video spec sheet →
FLUX.3 is Black Forest Labs' frontier video model — generates video with native audio directly from a text prompt, at up to 1080p and 5–20 seconds across eight aspect ratios
More comparisons
Frequently asked questions
Which is cheaper, Runway Gen-4.5 or Flux 3 Text to Video?+
Flux 3 Text to Video is cheaper per job: 43-170 credits against 250-500 credits for Runway Gen-4.5.
What can Runway Gen-4.5 do that Flux 3 Text to Video can't, or vice versa?+
Only Runway Gen-4.5 lists image to video, image to video, cinematic, camera control. Only Flux 3 Text to Video lists native audio, frontier, long duration, 1080p. Both list text to video, text to video.
How do Runway Gen-4.5 and Flux 3 Text to Video bill?+
Runway Gen-4.5 bills per second of output, and its price moves with clip length. Flux 3 Text to Video bills per second of output, and its price moves with clip length. Both are charged in Versely credits.
How long a clip can Runway Gen-4.5 and Flux 3 Text to Video generate?+
Runway Gen-4.5 supports 5s, 10s; Flux 3 Text to Video supports 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, 15s, 16s, 17s, 18s, 19s, 20s.
Try both inside Versely
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