Seedance 2.1Third-party AI video generator site

Seedance 2.1 is an independent web app marketing AI video generation with audio and multimodal inputs under the ByteDance Seedance name. Official status is unverified.

freemium

AI video generatortext to videoimage to videoaudio videolip syncmultimodalthird-partyByteDance Seedance

IndexedAugust 3, 2026

UpdatedAugust 4, 2026

4.2 (0 Number of reviews)

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What Seedance 2.1 claims to offer

Seedance 2.1 is a web app that markets cinematic AI video generation from text, images, video and audio. The site advertises multimodal input of up to 12 files, native joint audio and video with lip sync, a character consistency engine, style transfer, and clips up to about 15 seconds at 1080p with stereo audio.

Text, image, video and audio inputs combined into one generation.
Credit-based, no subscription, with credits the site says do not expire.

Official status and naming

Seedance is a video model family from ByteDance, whose documented releases are Seedance 1.0, 1.5 Pro and 2.0. There is no widely documented official release called Seedance 2.1, and this generator runs on its own domain branded Seedance21AI, with a footer that reads copyright 2026 Seedance21AI. It should be treated as an independent third-party site rather than a confirmed official ByteDance product, and the model actually powering it should be verified before relying on it. Public information about the operator is limited, so details reflect the marketing on the site.

Pricing and who it is for

The site offers free starter credits and one-time credit packs rather than a subscription. It targets creators who want quick AI video with synced audio for social clips, concepts and drafts.

Pros & Cons

Pros

Multimodal inputs combining text, image, video and audio
Advertises native synced audio with lip sync
One-time credit packs with no subscription and credits that do not expire
Free starter credits to test before paying

Cons

Not a confirmed official ByteDance product; the Seedance 2.1 name is unverified
Public information about the operator behind the site is limited
Clips are capped at roughly 15 seconds

Frequently Asked Questions

Is Seedance 2.1 an official ByteDance product?

It does not appear to be. ByteDance documents Seedance as 1.0, 1.5 Pro and 2.0, and this generator runs on a separate domain branded Seedance21AI, so it should be treated as an independent third-party site until the underlying model is confirmed.

What inputs does it accept?

The site advertises multimodal input of up to 12 files across text, images, video and audio, generating clips up to about 15 seconds at 1080p with stereo audio.

Is there a subscription?

No. The site uses one-time credit packs and says credits do not expire, with free starter credits on signup.

How much does it cost?

Credit packs run from about $9.90 for 160 credits up to $99.90 for 3,330 credits. Verify current pricing on the official site.

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