Seedance 2.5 vs Sora 2 vs Veo 3.1

Seedance 2.5 lists the broadest reference capacity at 50 combined files: up to 30 images, 10 videos, and 10 audio references for one generation.

OpenAI's published Sora 2 limit was 1 reference image; OpenAI shut the Sora 2 API on 24 September 2026 and Reviral does not sell it. Reviral's Veo 3.1 entries list 2 or 3 reference images depending on the variant. This is a raw input-capacity comparison, not a claim about how well any model follows a reference. Use Seedance when the brief requires several characters, products, places, movements, or audio cues in the same request.

On Reviral, the Veo 3.1 options go up to 4K, while Seedance 2.5 runs at 480p, 720p or 1080p (checked 25 September 2026). OpenAI's published Sora 2 limits specified 1280x720 for 16:9 and 720x1280 for 9:16 reference frame sizes; OpenAI shut the Sora 2 API on 24 September 2026 and Reviral does not sell it.

Reviral's Veo 3.1 options list 720p, 1080p, and 4K, with 16:9 and 9:16 aspects. Seedance 2.5 makes vertical or widescreen scenes. Check the exact setting in the studio before you render, because what a model can do and what a platform sells are different things.

Use Seedance 2.5 if the ad must be generated as 1 continuous 30-second shot. Neither OpenAI's published 12-second Sora 2 maximum nor the 8-second Veo 3.1 maximum listed here reaches that length in one clip.

If the ad is designed as 4 separate shots, Seedance 2.5 or Veo 3.1 can fit an 8-second-per-shot plan. Write the shot list first, then choose a model per shot by required duration, resolution, aspect, and references. Do not turn a multi-shot edit into a benchmark claim: this specification table says nothing about which output looks better.

On Reviral, a fixed 30-second 720p Seedance 2.5 clip costs 122 credits, and 1080p is priced at 35.2 credits a second, so a 4-second 1080p clip costs 141 credits.

At the $4.99 Mini Pack rate ($4.99 for 400 credits) that is about $1.52 and $1.76, checked 25 September 2026. Those are the only cost figures used here because this comparison does not invent cross-platform prices; the selected total appears before rendering. See /seedance-2-5-pricing for every option.

Choose from constraints you can verify: seconds, resolution, aspect, and reference count. Seedance 2.5 is the specification match for a 30-second one-shot or a reference-heavy scene.

Sora 2 is not an option: OpenAI's published limits were 4, 8 or 12 seconds at 16:9 or 9:16, but OpenAI shut the Sora 2 API on 24 September 2026 and Reviral does not sell it. Veo 3.1 fits a 4-, 6-, or 8-second plan on the listed variants and lists 720p through 4K. Start at /seedance-2-5, or use /tools/prompt-to-video to define the shot before selecting a model.