One photo, one 30-second AI video: Wan 3.0 costs $1.875 to $7.50

The short answer

Wan 3.0 can turn one photo into a 30-second clip on Sume, since it accepts 2 to 30 seconds. At 480p that costs $1.875, at 720p $3.75 and at 1080p $7.50 (30 seconds at $0.0625, $0.125 and $0.25). Kling 3 stops at 15 seconds, and Grok Imagine at 15, so for one uncut 30-second shot Wan is the pick.

The two models that reach 30 seconds

Seedance 2.5 also accepts 4 to 30 seconds, so it is the other candidate in the catalog. The Wan prices below are the ones this post quotes; look up Seedance 2.5 on its own rate card before you compare.

Wan 3.0 prices

The cost is linear in seconds, so a shorter test is a fixed fraction of the final.

Request

Send the photo as a first_frame, set duration to 30, and pick a resolution.

curl -X POST https://api.sume.com/v1/videos \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: wan30-001" \
  -d '{
    "model": "wan-3.0",
    "prompt": "Slow dolly through the garden, petals drifting, light shifting",
    "duration": 30,
    "resolution": "480p",
    "frame_images": [{
      "type": "image_url",
      "image_url": {"url": "https://example.com/garden.png"},
      "frame_type": "first_frame"
    }]
  }'

Long shots drift

A single photo gives the model one starting point and 30 seconds to invent. Long shots drift: the subject can change, and the end of the clip may look little like the photo. Test the idea at 5 seconds and 480p, which is $0.3125, before you spend $1.875 or more on the full length.

When to chain instead

If the story is a sequence, two 15-second clips often beat one 30-second clip. Take the last frame of clip one with the video-frames route, use it as the first frame of clip two, and join the results in a Timeline render for $0.10. The price at 480p is the same $1.875 for the two halves, and you get a choice point in the middle.