Gen-4.5
Runway
Gen-4.5 costs $0.25 per second of generated video — the 16th cheapest of the 18 video APIs tracked here. A 10-second clip runs about $2.50, and the rate is 5.0× the cheapest option (Veo 3.1 Lite at $0.05/sec), while still coming in 38% under the priciest (Veo 3.1). It outputs up to 1080p with a maximum single clip of 10 seconds, and produces silent video — you supply the audio separately.
Per second
$0.25
Per credit
10-sec clip
$2.50
5 sec: $1.25
Resolution
1080p
max 10 sec per call
Native audio
No
10 peers offer it
Pricing basis
~25 credits/sec at the $0.01 API credit price = $0.25/sec.
Runway's newest text-to-video model — the strongest on camera language and motion control, and the priciest of the line.
Capabilities
Price verified 2026-08-06 · source: manual
What it costs on a real workload
| Scenario | Monthly cost | Ray 3 |
|---|---|---|
| Social short-form6-second clips, 300 per month | $450 | $378 |
| Ad creative testing10-second clips, 60 variants per month | $150 | $126 |
| E-commerce product loops8-second clips, 1,000 per month | $2,000 | $1,680 |
| Side project / prototyping5-second clips, 40 per month | $50 | $42 |
Alternatives
- Ray 3$0.21/s
16% cheaper per second than Gen-4.5.
- Sora 2 Pro$0.30/s
1.2× the per-second rate of Gen-4.5.
Other models from this provider
- Gen-4 Turbo$0.05/s · 720p
- Gen-4$0.12/s · 1080p
Frequently asked questions
- How much does Gen-4.5 cost per video?
- Gen-4.5 is billed per credit, normalised to $0.25 per second of output. A 5-second clip costs about $1.25, a 10-second clip about $2.50. ~25 credits/sec at the $0.01 API credit price = $0.25/sec.
- What would Gen-4.5 cost for a real workload?
- At 6-second clips, 300 per month, Gen-4.5 comes to roughly $450 per month. The same workload on Ray 3 would be $378.
- Does Gen-4.5 generate audio?
- No. Gen-4.5 outputs silent video, so budget for a separate audio pass. If you need native audio, Vidu Q3-Turbo handles it at $0.055/sec.
- How long a clip can Gen-4.5 produce in one call?
- Up to 10 seconds per generation at 1080p. Vidu Q3-Pro goes furthest at 16 seconds, so longer sequences here mean stitching multiple generations.