Seedance 2.0 vs Seedance 2.0 Fast vs Seedance 2.0 Mini: which one to use

Seedance 2.0, Seedance 2.0 Fast and Seedance 2.0 Mini are the three versions of ByteDance's Seedance 2.0 video model. They take the same request body, the same references and the same clip lengths. What differs is the output resolution and the price per second: Seedance 2.0 renders up to 4K, while Fast and Mini stop at 720p and cost less, with Mini the cheapest.

The short answer: use Seedance 2.0 Mini for drafts and high-volume 480p or 720p clips, Seedance 2.0 Fast when you want a middle price point at the same resolutions, and Seedance 2.0 for 1080p and 4K finals.

How do Seedance 2.0, Fast and Mini differ?

Every row except price comes from the request validation each model runs on SeedRouter and matches the Seedance 2.0 API reference. For the live price per second at each resolution, see the Seedance API pricing guide.

ByteDance's own Seedance 2.0 series guide puts it the same way: "The three models support largely the same features, with the primary differences being the trade-off between generation quality and cost." It recommends Seedance 2.0 "for the highest generation quality", Fast "for a balance of cost and generation speed when top-tier quality is not required", and Mini "for the best cost performance".

Is Seedance 2.0 Fast actually faster?

ByteDance describes Fast as a model that "inherits the core functions and advantages of the seedance 2.0 model, with faster generation speed" (ModelArk release notes). In our logs the difference is real but small. These are the times from submitting a task to the finished video being available, for 5-second 720p clips at 16:9, three tasks per model, all run on September 25, 2026:

Three tasks per model is a small sample, measured from submission until the result was ready, so treat it as a rough guide, not a benchmark. Seedance 2.0 was the slowest in every run, but the gap is tens of seconds, not minutes. Fast and Mini overlapped, so if waiting time is what you care about most, Mini was as quick as Fast here and costs less.

When should you pick Seedance 2.0 Mini?

Pick Mini when the output is 480p or 720p and cost matters; ByteDance positions it as the model with the best cost performance. It has the lowest price per second in the Seedance family, and it accepts the full set of Seedance 2.0 inputs: text, first and last frames, and up to 9 images, 3 videos and 3 audio tracks as references.

That makes it the default for:

• Drafts. Try a prompt, a camera move or a reference set at 480p with a short duration before paying for a final.
• High-volume social clips. 720p covers most feeds, and a batch of short clips is where a lower rate per second adds up.
• Previews in a product. Show the user a quick version, then render the one they keep at a higher setting.

When is Seedance 2.0 Fast the better choice?

Fast renders the same resolutions as Mini at a higher rate. ByteDance places it between the two on quality and cost, so choose it when a Mini draft is not good enough but the clip does not need 1080p or 4K. Whether a given prompt looks better on Fast is a judgement to make on your own prompts, because both accept the same request. Run the same body on both, change only model, and compare the clips side by side in the playground.

When do you need the full Seedance 2.0?

Only Seedance 2.0 renders 1080p and 4K, and it is the one ByteDance recommends for the highest generation quality. If the clip is a final for a large screen, an ad or anything that will be cropped or reframed, start there. It also accepts every input the smaller versions do, so a draft made on Mini or Fast moves to Seedance 2.0 unchanged except for model and resolution.

A practical workflow is to draft on Mini, confirm the motion on Fast or Mini at 720p, and render only the keeper on Seedance 2.0 at 1080p or 4K.

How do you switch between them?

Change one field. This request runs on Mini; replace the model value to run it on Fast or on Seedance 2.0:

curl https://api.seedrouter.ai/v1/contents/generations/tasks \
  -H "Authorization: Bearer $SEEDROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "dreamina-seedance-2-0-mini",
    "content": [{"type": "text", "text": "A golden retriever runs along a beach at sunset, tracking shot"}],
    "resolution": "720p",
    "ratio": "16:9",
    "duration": 5
  }'

The response is a task ID. Poll the task until status is succeeded and read content.video_url; the Seedance API guide walks through the whole flow. If you move a request with "resolution": "1080p" or "4k" to Fast or Mini, it is rejected before any charge, because those two stop at 720p.

Frequently asked questions

Is there a Seedance 2.0 Pro?

No. The Seedance 2.0 family has three models: Seedance 2.0, Seedance 2.0 Fast and Seedance 2.0 Mini. "Pro" was the name of earlier versions such as Seedance 1.5 Pro, and ByteDance's model list names Seedance 2.0 Mini as the recommended replacement for the retired Seedance 1.5 Pro. If you mean the top model of the 2.0 family, that is dreamina-seedance-2-0.

Is Seedance 2.0 Mini good enough?

For 480p and 720p output, it takes the same inputs as the full model at the lowest price, so try it first. Move up when a clip needs 1080p or 4K, or when your own comparison shows a prompt holding up better on a larger version.

Seedance 2.0 Fast vs Mini: which is cheaper?

Mini. It has the lowest price per second in the Seedance family, and Fast sits between Mini and Seedance 2.0. The pricing guide shows the live rates.

What about Seedance 2.5?

Seedance 2.5 is a newer model rather than a version of 2.0. It runs up to 30 seconds, takes up to 30 image references, and can edit or extend a video, but it stops at 1080p and costs more per second. The Seedance 2.5 vs 2.0 guide compares them.

Pick one and try it

Start on Seedance 2.0 Mini, use Seedance 2.0 Fast when you want the middle option, and render finals on Seedance 2.0. One API key and one balance cover all three, and failed tasks are not charged.