Seedance 2.0 vs 2.0 Fast (formerly 1.0 Pro and Lite): drafts on Fast, keepers on 2.0

Seedance 1.0 Pro and Lite were retired on eroq: Pro now renders on Seedance 2.0 and Lite on Seedance 2.0 Fast, and old links and API ids land on them. The pair is priced far enough apart that the choice still matters. Fast renders 5 seconds for 195 credits at 720p; 2.0 renders the same 5 seconds for 320 credits at 720p, and also goes to 1080p and 4K. Both take 4 to 15 seconds, both render sound, both honor a reproducibility seed, both are moderated upstream by their provider. The interesting question isn't which is better — it is how to use both in the same job without paying 2.0 prices for every failed idea.

The two engines, side by side

Seedance 2.0 Fast (seedance-2-0-fast)

• 39 credits / second at 720p: 195 credits for 5 s, 390 for 10 s
• 4 to 15 seconds
• 480p or 720p
• Hobby plan and up

Seedance 2.0 (seedance-2-0)

• 64 credits / second at 720p: 320 credits for 5 s, 640 for 10 s; 1080p and 4K bill higher rates per second
• 4 to 15 seconds
• 480p, 720p, 1080p or 4K
• Creator plan and up

Both are priced per second, so a 10-second clip is twice a 5-second one. At the entry pack, where a credit is roughly a cent, a 10-second clip at 720p is $6.40 on 2.0 versus $3.90 on Fast. The two engines share the same prompt register, the same controls (seed, first and last frame, up to six reference pictures and a character's voice sample, sound) and the same 4–15 second range, so a prompt tuned on one carries to the other.

Note what Fast does not give up: the seed. A seed pins a render so that the same prompt and settings produce the same clip, which is what makes iteration on Fast meaningful rather than random.

When Fast is enough

Fast is the right engine more often than the price gap suggests.

• Drafting. You don't know yet whether the shot works. Most first prompts don't, and a wrong prompt at 1080p is still wrong.
• Vertical shorts. A 9:16 clip watched on a phone rarely needs more than 720p. For social shorts, Fast at 720p is usually the finished product, not the draft.
• Blocking a film in Cinema. Cinema builds a film shot by shot, up to 24 shots, each rendering on its own. Blocking a dozen shots on 2.0 before you know the film's rhythm is expensive; blocking them on Fast and re-rendering the ones that survive is not.
• Hobby accounts. Fast is unlocked from Hobby ($15, 1,800 credits). Seedance 2.0 is not. On Hobby the choice makes itself, and 1,800 credits is 9 five-second Fast clips a month.

When Seedance 2.0 earns its price

• 1080p deliverables. Anything for a 16:9 screen larger than a phone — a website hero, a client cut, a short film you will show on a TV.
• The final take. Once the prompt is locked, the last render is the one people see. That one goes to 2.0.
• Faces and fine detail. Resolution is where fabric texture, skin and small text survive.

Seedance 2.0 sits on Creator ($49, 6,000 credits) and up, which is also the tier that unlocks every other premium engine and a priority video queue. If you are subscribing for it, you are getting Seedance 2.5, Veo 3.1, Kling 3.0 Pro and Hailuo 3 in the same move — see /pricing.

The draft-then-keeper workflow

This is the pattern that makes the two engines cheaper together than either alone.

1. Write the prompt as one paragraph — subject, motion, camera, light, mood, 30–80 words. If the draft is rough, hit Enhance; the rewrite is free.
2. Render it on Fast at 5 seconds. Look at the motion, the framing, the light. Don't judge sharpness — you are judging the idea.
3. Fix one thing per render. Set the seed after the first pass so each change is legible. Two or three Fast passes usually land the shot.
4. Restore the winner and switch to 2.0. Every render lands in your Library with its full recipe; Restore all reloads it into the tool. Change the engine to Seedance 2.0, set 1080p, render once.
5. Only then go long. If the shot needs 8 or 10 seconds, extend it on 2.0 after the 5-second version works. The extra seconds are where drift creeps in.

The arithmetic at 720p: four Fast drafts at 5 seconds (780 credits) plus one Seedance 2.0 keeper (320) is 1,100 credits — about $11 at the entry pack. Five takes on 2.0 to reach the same result would be 1,600. Over a month of shots, that difference is the difference between Creator's 6,000 credits being enough and not.

One honest caveat: Seedance 2.0 is a separate engine, not an upscale of the Fast clip. The keeper is a fresh take on the same prompt, and it will interpret it slightly differently. That is why step 3 matters — a prompt that survives three Fast passes is specific enough to survive the jump.

Length and the plan caps

Both engines top out at 15 seconds, which is also Hobby's clip cap; Creator allows 20, so on Creator the engine's own 15-second ceiling is what you hit first. If the shot genuinely needs 20 or 30 seconds in one take, that is Seedance 2.5, a different engine with a different price.

Example prompt

A shot that works on both engines — draft it on Fast, keep it on 2.0:

A street food vendor flips noodles in a flaming wok under a canopy of paper lanterns at night, steam and sparks bursting toward the lens, customers blurred behind him. Handheld close-up drifting around the wok, neon glow from the signs, warm film palette, dynamic and appetizing.

Fast pass: 5 s, 9:16, 720p, no seed on the first take, then the seed pinned while you adjust. Seedance 2.0 pass: same prompt, 1080p, 8 s if the flip needs the room; set a seed on the first take and keep it.

Expect Fast to get the flame, the steam and the handheld drift right, and 2.0 at 1080p to add what is in the sparks and the lantern paper. That is the whole division of labor.

FAQ

What is the difference between Seedance 2.0 and Seedance 2.0 Fast?

Resolution, price and plan. Fast renders at 480p or 720p for 195 credits per 5 seconds at 720p; Seedance 2.0 renders up to 4K, for 320 credits per 5 seconds at 720p. Both take 4 to 15 seconds, render sound and honor a seed. They replaced Seedance 1.0 Lite and Pro.

Which plan do I need for Seedance 2.0 and 2.0 Fast?

Fast is unlocked from the Hobby plan; Seedance 2.0 from the Creator plan. Free accounts get Seedance 2.0 Mini, the cheapest Seedance, along with Motion One, Motion Pro and Veo 3.1 Lite.

Does the same seed give the same clip on Fast and 2.0?

Treat them as separate engines. A seed pins a render on the engine you set it on; the 2.0 keeper is a new take on the locked prompt, not a higher-resolution copy of the Fast draft.

Open the Video tool, pick Seedance 2.0 Fast, and draft — /studio/video. Engine pages: Seedance 2.0, Seedance 2.0 Fast.