Pet Adoption Photos to Video: Wan 3.0 or Seedance 2.5

A shelter or rescue usually has exactly one thing to work with per animal: a single static photo, often taken on a phone in a cage or a yard. Turning that photo into a short video — for a listing, a social post, or a donor appeal — makes the animal noticeably more engaging without a reshoot. Two general-purpose image-to-video endpoints available through Siray's API fit this job well: alibaba/wan-3.0-i2v and bytedance/seedance-2.5-i2v. Neither is an NSFW/uncensored variant; both are plain, general-purpose endpoints.

Key Takeaways

• Wan 3.0 i2v floors at a 2-second clip; Seedance 2.5 i2v floors at 4 seconds — Wan 3.0 is the more flexible pick for very short teaser clips.
• Wan 3.0's 480p rate ($0.04/s) is meaningfully cheaper than Seedance 2.5's 480p rate ($0.134/s) — not a close call.
• Seedance 2.5 i2v's price scales with resolution: 720p runs 2.164x the 480p rate, not a flat per-second number.

Wan 3.0 i2v: Lower Floor, Cheaper at 480p

Wan 3.0 i2v takes a required image and an optional end_image — a first/last-frame control useful for animating a photo into a specific final pose, like a dog moving from sitting to standing alert. duration runs 2-30 whole seconds, size covers 480p/720p/1080p, and aspect_ratio offers 6 options. audio_enable is a boolean with no declared default, so set it explicitly rather than assuming either state. Pricing (subject to same-day reverification — Siray's console returned a login wall this session, so this is the latest recorded rate, not freshly checked) currently runs 480p $0.04/s, 720p $0.08/s, 1080p $0.16/s, roughly 30% off the launch rate. That discount has already moved once since launch, so check it again before budgeting a batch run.

Seedance 2.5 i2v: Higher Floor, Resolution-Dependent Pricing

Seedance 2.5 i2v's duration starts at 4 seconds, not 2 — a real constraint if you want a very short teaser clip. size covers 480p/720p/1080p and aspect_ratio offers 7 options, one more than Wan 3.0. The pricing is not a flat per-second number: 480p runs $0.134/s, 720p runs $0.290/s — 720p costs 2.164x the 480p rate, because billing is token-based underneath ($0.013375 per 1K tokens, scaled by output resolution and duration). 1080p is supported but its rate isn't independently verified here, so don't quote a number for it. There's no end_image-equivalent field documented for this endpoint.

Picking Between Them for This Use Case

For a fast, cheap 5-10 second clip at 480p, Wan 3.0 i2v is both more flexible (2s floor) and clearly cheaper ($0.04/s vs. $0.134/s). Seedance 2.5 i2v becomes the better fit if you specifically need end_image-style pose control replaced by its own strengths at higher resolution, or if 720p/1080p output quality at that model's rendering style matters more than the per-second cost. Neither has a documented quality/realism edge over the other in Siray's specs — the real differences are the duration floor and the price curve, not a subjective look.

Developer Notes

Both endpoints are reachable through the same normalized API, so testing one against the other on a real adoption photo is a one-line model swap, not a new integration. If you're running this at shelter scale — dozens of animals a week — the price gap at 480p adds up fast, so it's worth testing both once before committing a batch job.

Ready to turn your first adoption photo into a clip? Create your free Siray account and try Wan 3.0 i2v and Seedance 2.5 i2v side by side.