30-second 1080p AI video: Luma $7.20, LTX $3.90, Sume from $5.63
What 30 seconds of 1080p costs: Luma as six 5-second clips ($7.20) or three 10-second ones ($10.80), LTX Fast $3.90, and Sume. Arithmetic shown.
Thirty seconds of 1080p video costs $3.90 on LTX-2.5 Fast, $5.10 on LTX-2.5 Pro and $7.20 on Luma Ray 3.2 if you buy six 5-second generations. Luma's 10-second 1080p generation costs $3.60, three times the $1.20 five-second price, so three 10-second clips cost $10.80 for the same running time. On Sume the cost ranges from $5.625 to $42.6465, depending on the model.
| Option | Arithmetic | Total |
|---|---|---|
| LTX-2.5 Fast | 30 x $0.13 | $3.90 |
| LTX-2.5 Pro | 30 x $0.17 | $5.10 |
| Luma Ray 3.2, six 5-second clips | 6 x $1.20 | $7.20 |
| Luma Ray 3.2, three 10-second clips | 3 x $3.60 | $10.80 |
| Sume gemini-omni-flash-1.1, three 10-second jobs | 30 x $0.1875 | $5.625 |
| Sume minimax-h3-max, two 15-second jobs | 30 x $0.20 | $6.00 |
| Sume wan-3.0, one 30-second job | 30 x $0.25 | $7.50 |
| Sume seedance-2.5, one 30-second job | 30 x $1.42155 | $42.6465 |
What a running-time budget hides
A 30-second spot is not 30 seconds of usable footage. If you throw away two of every three takes, the bill is three times the table. On LTX Fast at 1080p, 90 seconds of generation costs 90 x $0.13 = $11.70. On Luma with 5-second blocks, 18 blocks cost 18 x $1.20 = $21.60. Draft cheaper tiers first: Luma's 360p draft is $0.06 per 5 seconds, so six drafts are $0.36.
Continuity across clips
Splitting a spot into several clips means joining them. Sume's timeline docs describe composing clips, and Timeline render is priced at $0.10 per output minute, rounded up, minimum 1 minute, so joining a 30-second spot adds $0.10. That fee is small beside the clip costs above. Whether the joined clips look continuous is a creative question that the price pages do not answer.
Sume's model limits
Sume's docs give maximum durations per model: 15 seconds for most models, 30 for wan-3.0 and seedance-2.5, and 10 for gemini-omni-flash-1.1. That is why the Omni row is three jobs and the H3 Max row is two. Sume does not list Luma or LTX, so those rows are vendor prices only.
Takes and final cost
A realistic plan separates exploration from final. Suppose you generate 6 draft clips of 10 seconds at 540p and then 3 finals of 10 seconds at 1080p. On Luma that is 6 x $0.45 + 3 x $3.60 = $2.70 + $10.80 = $13.50. LTX's page has no 540p tier, so use its 720p Fast row for the drafts: 60 x $0.09 + 30 x $0.13 = $5.40 + $3.90 = $9.30.
Why Luma's 10-second price matters
The odd row in the table is Luma's 10-second clip. Its page prints $3.60 for 10 seconds at 1080p and $1.20 for 5, so a 10-second clip costs 3.0 times the 5-second one. For a 30-second plan, six 5-second clips ($7.20) are $3.60 cheaper than three 10-second clips ($10.80). The same effect appears at every resolution on the page, so for Luma the cheapest way to buy running time is in 5-second units, if your shots can be that short.
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