Seedance Fast AI Video Generator
Seedance Fast is the accelerated Seedance 2.0 variant that Readkidz currently exposes in Quick Create. Open the exact model route, describe one short continuous shot, optionally add authorized reference images, choose a 4–15 second duration and one of six aspect ratios, then check the configured resolution rate before generating. Readkidz is an independent platform, not ByteDance's official site.
How it works
- 1Open the Fast variant directly
Submit the composer on this page to enter Readkidz Quick Create with `mode=freestyle` and `model=seedance_fast` already carried through sign-in. This avoids landing in broad model discovery and reselecting the route.
- 2Write a compact motion brief
Use subject + main action + camera + continuity + lighting or style. Example: “A tiny beetle caravan crosses a sunlit meadow; steady forward tracking shot, warm morning light, shallow depth of field, one continuous take, no cuts.”
- 3Price the test before the long render
Select duration, aspect ratio, and resolution, then read the confirmation card. The charge is the configured per-second rate multiplied by output seconds. A short 480p or 720p test is the cautious way to check motion and framing before a longer or higher configured tier.
Choose a Seedance Fast test with the real Readkidz controls
- Exact Readkidz route
- Seedance Fast, sent to the current `doubao-seedance-2-0-fast-260128` gateway model
- Good first test
- One subject, one main action, one camera move, and one continuous 4–5 second shot
- Duration controls
- 4, 5, 6, 8, 10, 12, or 15 output seconds
- Aspect ratios
- 16:9, 9:16, 4:3, 3:4, 1:1, or 21:9
- Resolution pricing
- 480p: 150 credits/sec; 720p: 200 credits/sec; 1080p: 380 credits/sec; 2K: 560 credits/sec
- Reference-image budget
- The current submitter accepts up to two images in first/last mode or nine in omni mode when the calling workflow selects that mode
- Evidence boundary
- The provider paper documents native 480p/720p for the 2.0 family; Readkidz 1080p/2K entries are configured product choices, not a local provider-capability test
- Not exposed publicly here
- Quick Create does not currently present video references, audio references, or a separate generate-audio switch as Seedance Fast controls
Official documentation and Readkidz configuration are different evidence layers. The 2.0 paper documents native 480p and 720p output; Readkidz also lists configured 1080p and 2K choices, which should not be read as local proof of upstream output behavior.
Frequently asked questions
What is Seedance Fast?
The ByteDance team paper describes Seedance 2.0 Fast as an accelerated variant designed for low-latency scenarios. In Readkidz, the public label is `Seedance Fast` and the current gateway identifier is `doubao-seedance-2-0-fast-260128`.
Is Seedance Fast the same as the full Seedance 2.0 product?
No. It belongs to the Seedance 2.0 family, but it is the accelerated Fast variant. Readkidz exposes a narrower Quick Create workflow and does not claim to provide every input, editing, audio, or provider control available in the full upstream product.
Which Seedance Fast duration and aspect ratio can I choose in Readkidz?
The current controls list 4, 5, 6, 8, 10, 12, or 15 seconds and six ratios: 16:9, 9:16, 4:3, 3:4, 1:1, and 21:9. Recheck the confirmation screen because configured options can change.
What are the Seedance Fast credit rates?
The current configured rates are 150 credits per second at 480p, 200 at 720p, 380 at 1080p, and 560 at 2K. The final charge multiplies the chosen rate by output seconds, so review the live estimate before submitting.
Are the Readkidz 1080p and 2K Seedance Fast choices officially verified?
They are current Readkidz configuration and pricing choices. The ByteDance team paper documents native 480p and 720p output for Seedance 2.0; this page does not present the local 1080p/2K menu entries as independent proof of upstream resolution behavior.
How many reference images can Seedance Fast receive?
The current Readkidz submitter caps reference images by mode: up to two for first/last-frame mode and up to nine for omni mode. The public Quick Create interface may expose a narrower path, and uploaded references must be yours or used with permission.
How should I write a Seedance Fast prompt?
Describe one shot with five parts: subject, action, setting, camera, and lighting or style. A concrete example is: “A paper-cut dragon circles a lantern festival at night; street-level tracking shot, warm lantern light, crisp layered-paper texture.” Start with a short test before adding more motion or visual constraints.
Why should I start with a short Seedance Fast test?
A short test reduces the credit at risk while you check whether subject motion, camera direction, framing, continuity, and style are working together. Keep the first brief to one continuous shot before adding more actions or a longer duration.
Is the Readkidz Seedance Fast generator free?
New accounts currently receive 1000 starter credits for 30 days with no card required. However, Readkidz requires an active subscription for video models, including Seedance Fast, and every successful generation still uses credits.
What happens to my credits if Seedance Fast generation fails?
A failed Quick Create submission or generation starts a refund for the related charge. If the refund cannot finish immediately, Readkidz records it as pending recovery instead of reporting it as already completed.
Is this an official ByteDance Seedance Fast generator?
No. Readkidz is an independent creation platform and is not affiliated with or endorsed by ByteDance. Use real-person likenesses, trademarks, copyrighted characters, and reference assets only when you have the necessary consent and rights, and review every generated clip before publishing.
Does this Readkidz workflow promise native audio generation?
No. ByteDance describes audio as part of the upstream Seedance 2.0 architecture, but Readkidz's public Quick Create controls do not currently show a separate Seedance audio-generation setting. This page promises only the controls visible in Readkidz.
Can I use a real person's face as a reference?
Use a real person's portrait only when you have the necessary consent and legal rights. ByteDance's official Seedance 2.0 launch notes that human-portrait references require identity verification or prior legal authorization; opening this Readkidz workflow does not grant those rights.
Create a short shot with Seedance Fast
Open Quick Create with `seedance_fast` already selected. Start with a compact test, confirm the duration, ratio, resolution, and live charge, then submit only when the settings match your destination.