Seedance 2 vs Seedance 2.5: price for a 15-second clip at 720p

A 15-second 9:16 clip at 720p costs $5.67 on Seedance 2 and $8.667 on Seedance 2.5 on Sume. The newer model costs 1.53 times as much per clip at that size.

The two share the token formula and differ in rate and envelope. Seedance 2 caps at 15 seconds and Seedance 2.5 at 30, per the Video Router docs.

The rates

Both are billed per 1,000 video tokens. Seedance 2 is $0.014 list and Seedance 2.5 is $0.0214 at 480p and 720p, then Sume multiplies by 1.25. A 15-second 720p 9:16 clip is 324,000 tokens in both cases.

What the extra money buys

The model cards list what each model is for. Seedance 2.5 adds 1080p and the longest Seedance clip, along with reference inputs of image, video and audio. If your holiday spot is 15 seconds or less at 720p and you do not need the extra reference modes, Seedance 2 is the lower price.

Check the cards for modes before assuming parity; the lower-cost model may not accept every input.

A batch comparison

For 30 clips of 15 seconds at 720p: Seedance 2 is 30 x $5.67 = $170.10. Seedance 2.5 is 30 x $8.667 = $260.01. The gap is $89.91.

Run both on the same prompt for a few clips before you pick; look matters more than a price gap at these amounts.

Notes

• Seedance 2 minimum length is 4 seconds, the same as 2.5.
• Estimates are held at submit and refunded on failure.
• Catalog rates can change. See pricing.