A 5-second 1080p clip costs $1.20 at Luma and $0.50 to $3.40 at Runway. A 10-second 1080p clip costs $3.60 at Luma and $1.00 to $6.80 at Runway.
Luma sells fixed 5-second and 10-second clips, so both lengths are published. Runway bills per second, so both lengths are a multiplication. That makes both lengths comparable without a duration assumption. Ray Reframe is excluded from these tables because it is a different operation, not a text-to-video clip.
Basis: 5 seconds and 10 seconds at 1080p. Luma's figures are published per clip; Runway's are per-second rates multiplied by the clip length.
5 seconds at 1080p
| Vendor | Model | Rate | Billing | Cost for 5s |
|---|---|---|---|---|
| Runway | gemini_omni_flash_1.2 (1080p) | $0.10/s | per second | $0.50 |
| Runway | grok_imagine_1_5_lite (1080p) | $0.14/s | per second | $0.70 |
| Runway | gemini_omni_flash_1.1 (1080p) | $0.15/s | per second | $0.75 |
| Runway | kling_4 (1080p) | $0.188/s | per second | $0.94 |
| Runway | wan3 (1080p) | $0.20/s | per second | $1.00 |
| Luma | Luma Ray T2V/I2V (5s) | $1.20/clip | per clip (5s) | $1.20 |
| Runway | wan3_prime (1080p) | $0.28/s | per second | $1.40 |
| Runway | grok_imagine_1_5 (1080p) | $0.29/s | per second | $1.45 |
| Runway | happyhorse_1_0 (1080p) | $0.30/s | per second | $1.50 |
| Runway | seedance2 (1080p) | $0.40/s | per second | $2.00 |
| Luma | Luma Ray V2V (5s) | $2.16/clip | per clip (5s) | $2.16 |
| Runway | seedance2_5 (1080p) | $0.68/s | per second | $3.40 |
Luma's two 5-second 1080p rows — Ray T2V at $1.20 and Ray V2V at $2.16 — sit in the middle of Runway's range. 5 Runway rows are cheaper than Luma's T2V clip; 9 are cheaper than its V2V clip.
10 seconds at 1080p
| Vendor | Model | Rate | Billing | Cost for 10s |
|---|---|---|---|---|
| Runway | gemini_omni_flash_1.2 (1080p) | $0.10/s | per second | $1.00 |
| Runway | grok_imagine_1_5_lite (1080p) | $0.14/s | per second | $1.40 |
| Runway | gemini_omni_flash_1.1 (1080p) | $0.15/s | per second | $1.50 |
| Runway | kling_4 (1080p) | $0.188/s | per second | $1.88 |
| Runway | wan3 (1080p) | $0.20/s | per second | $2.00 |
| Runway | wan3_prime (1080p) | $0.28/s | per second | $2.80 |
| Runway | grok_imagine_1_5 (1080p) | $0.29/s | per second | $2.90 |
| Runway | happyhorse_1_0 (1080p) | $0.30/s | per second | $3.00 |
| Luma | Luma Ray T2V/I2V (10s) | $3.60/clip | per clip (10s) | $3.60 |
| Runway | seedance2 (1080p) | $0.40/s | per second | $4.00 |
| Luma | Luma Ray V2V (10s) | $4.32/clip | per clip (10s) | $4.32 |
| Runway | seedance2_5 (1080p) | $0.68/s | per second | $6.80 |
At 10 seconds Luma's T2V clip is $3.60 and its V2V clip $4.32. 8 Runway rows are cheaper than the T2V clip at this length.
Luma's per-second cost rises with length, Runway's does not
| Vendor | 5s cost | 10s cost | 5s per second | 10s per second |
|---|---|---|---|---|
| Luma Ray T2V (1080p) | $1.20 | $3.60 | $0.24 | $0.36 |
| Luma Ray V2V (1080p) | $2.16 | $4.32 | $0.432 | $0.432 |
| Runway 1080p rows | $0.50–$3.40 | $1.00–$6.80 | unchanged | unchanged |
Luma's T2V price triples when the clip doubles, so the 10-second clip costs 50% more per second. Its V2V row does not: $2.16 for 5 seconds and $4.32 for 10 seconds is the same $0.432 per second at both lengths. Runway's per-second rate is constant by definition, so doubling the length doubles the price.
Where this comparison breaks
Clip length. Luma sells 5 and 10 seconds only. Runway sells any length, subject to minimums on six models. A 7-second comparison is not available at Luma.
Resolution. Luma's 1080p step is steep: its 5-second T2V clip is $0.15 at 540p, $0.30 at 720p and $1.20 at 1080p — the top step is 4× the middle one. Runway's 1080p rows have no 540p equivalent, so the tiers do not line up.
Model type. Luma's V2V rows take source video and cost more; Runway's gemini_omni_flash (video to video) is a separate row at $0.11/s. Compare like with like: T2V against T2V-generating rows, V2V against video to video.
Minimums. Runway's aleph2 bills a 56-credit minimum, which at 28 credits/second means a 5-second clip is billed normally but a 1-second clip is not.
Which to pick, on price alone
- Cheapest 5-second 1080p clip: Runway
gemini_omni_flash_1.2, $0.50. - Cheapest 10-second 1080p clip: Runway
gemini_omni_flash_1.2, $1.00. - Cheapest Luma 1080p clip: Ray T2V at 5 seconds, $1.20.
- Fixed-length simplicity: Luma. One clip, one line on the invoice, no minimum to check.
- Long clips: Runway, because Luma stops at 10 seconds.
FAQ
Is Luma cheaper than Runway?
Not at 1080p. Luma's cheapest 1080p clip is $1.20 for 5 seconds; Runway has five 1080p rows under that price for the same 5 seconds. Luma is cheaper than Runway's expensive rows (seedance2_5 at $3.40 for 5 seconds), so the answer depends on the model.
Why is Luma's 10-second clip three times the 5-second price?
That is Luma's published rate: $1.20 for 5 seconds, $3.60 for 10 seconds at 1080p. It works out to $0.24/s versus $0.36/s.
Does Runway charge the same per second at any length?
Yes, subject to the credit minimums on six models. A 5-second clip at $0.10/s is $0.50; a 10-second clip at the same rate is $1.00.
What about Luma's Reframe row?
Ray Reframe is priced per second: $0.06 at 540p, $0.12 at 720p, $0.36 at 1080p. It is a different operation from text-to-video, so it is not in the tables above.
Basis. 5 seconds and 10 seconds at 1080p. Every figure is converted from the vendor's published row, shown in the Rate column. All prices checked 2026-11-08. Resale rows are labelled and never merged with the model owner's rate.