30-second ad: voice, music, captions and render cost 45.5 cents
A 30-second ad's finishing stack on Sume is 45.5 cents: 3 cents of voice, a $0.125 music track, $0.20 captions and a $0.10 render, before footage.
The total
Finishing a 30-second spot with a 450-character voice-over, one music track, burned-in captions and a one-minute render bills 3 + 12.5 + 20 + 10 = 45.5 cents. Footage generation is separate and is not counted here.
Line items
Sume TTS list price is 38 micro-dollars (0.0038 cents) per character; the billable price is list x 1.25, rounded up to whole cents per job. That is 0.00475 cents per character before rounding, so a 20,000-character request is 20,000 x 0.00475 = 95 cents.
| Item | Basis | Arithmetic | Cost |
|---|---|---|---|
| Voice-over (TTS) | 450 characters | 450 x 0.00475 = 2.14, rounded up to 3 cents | 3 cents |
| Music 1.0 | Fixed per generation | 1 x $0.125 | 12.5 cents |
| Captions | Per job, clips up to 60 s | 1 x $0.20 | 20 cents |
| Timeline render | $0.10 per ceil(output minute) | ceil(0.5) = 1 minute | 10 cents |
| Total | 45.5 cents |
Where the budget moves
Music is the line most likely to multiply. The prompt controls the track and there is no seed, so plan for retries; five takes cost 5 x 12.5 = 62.5 cents. Captions are a fixed $0.20 for a clip up to 60 seconds, so adding style variants adds $0.20 each, though a restyle reuses the transcript.
The Timeline render bills a full minute for any output of 1 to 60 seconds, so a 30-second spot is charged as one minute.
Order of operations
Generate the voice first, because its length sets the render length. Build the music prompt with a 30-second arc, then render with the voice as the audio spine and the track as the soundtrack. Caption the finished clip last, so the captions match what is audible. See Music 1.0, Timeline 1.0 and Video captions.
What is not in the 45.5 cents
Footage is the big missing line. Video clips are priced per model, resolution and length, and a 30-second ad usually needs several clips, so the finishing stack here is the small part of the bill. Use the video pricing docs and the grid for that part and add it separately.
Stills, avatar shots and any retries of voice or music are also extra. Plan one extra voice take and two extra music takes as a rule of thumb: that adds 3 + 25 = 28 cents.
A repeatable template
For a weekly batch of ten ads the finishing stack is 10 x 45.5 = 455 cents, $4.55. Because every line is a fixed or per-character price, you can compute the bill before you submit anything, which is useful when a client wants a quote. Keep the voice script under 500 characters per 30 seconds as a starting point, and measure the first take against the actual duration.
Sources
More in Use cases
- A 30-second launch hero: Seedance 2.5 $17.34, Wan 3.0 $3.75
Priced at 720p on Sume: a 30-second hero in one Seedance 2.5 job, one Wan 3.0 job, or three 10-second Omni Flash clips joined. The gap is large.
- Turn a 30-second voice memo into a vertical status video
Put a 30-second voice recording under four stills and burned captions for a WhatsApp status or any vertical feed. Timeline body and a total of about 33 cents.
- 36 sneaker colorways from one photo: Nano Banana 2.1 edit, $3.60
36 colorway edits of one sneaker photo cost $3.60 on Nano Banana 2.1 at 1K on Sume: 9 calls of n=4. Table for 0.5K to 4K and a GPT Image 2.5 comparison.
- A 4-minute launch video as a TikTok ad: $0.40 to assemble
TikTok non-Spark ads allow 10 minutes; Spark Ads have no duration limit. A 4-minute launch video costs $0.40 to assemble on Sume Timeline 1.0.
Written by Sume