Seedance 2.0の実課金：固定の秒単価ではなくoutput tokensで決まる理由

Seedance 2.0の実課金：秒単価固定ではなく、完了後のoutput tokensで決まる#

顧客からよく聞かれるのは「Seedance 2.0は1秒いくらか」です。正確には、Seedance 2.0には全タスク共通の固定秒単価はありません。タスク完了後に上流が返す実際のoutput tokensをもとに課金されます。

結論#

The correct billing flow is:

submit task -> task completes -> upstream returns usage tokens -> calculate USD by tokens -> convert to Crazyrouter quota

It is not:

submit task -> charge directly by requested duration seconds

So we should not say:

1 second = fixed N tokens

Instead, after the task finishes, we can calculate:

observed tokens/sec = billedTokens / requestedDurationSeconds
observed USD/sec = actualPriceUSD / requestedDurationSeconds

This is an observed value for that task, not a universal fixed rate.

現在の公開対応範囲#

Current public capability boundary for doubao-seedance-2-0 and doubao-seedance-2-0-fast:

• 480p supported
• 720p supported
• 1080p is not currently in the public supported range

The measured examples below use 720p and 4s.

課金ルール#

Seedance 2.0 billing mainly depends on whether the request contains video input.

video0 means there is no video reference input. video1 means the request includes video reference input, such as reference_video.

最終課金式#

After a successful task, the system first reads TotalTokens. If unavailable, it falls back to CompletionTokens.

actualPriceUSD =
  unitPriceUSDPer1MTokens
  * (billedTokens / 1_000_000)
  * quantityMultiplier
  * groupRatio
  * discount

Without extra multipliers or discounts:

actualPriceUSD = unitPriceUSDPer1MTokens * billedTokens / 1_000_000

Crazyrouter quota conversion:

actualQuota = int(actualPriceUSD * QuotaPerUnit)
QuotaPerUnit = 500000

実測ケース1：text-to-video#

Request profile:

• Model: doubao-seedance-2-0
• Type: text-to-video
• Input: text only, no image or video reference
• Resolution: 720p
• Duration: 4s
• Task ID: cgt-20260617212928-5s755
• completion_tokens = 87300
• total_tokens = 87300

Because there is no video reference input, the billing key is:

billing_key = doubao-seedance-2-0:video0
unitPrice = 46 / 7 = 6.571428 USD / 1M tokens

Calculation:

tokensPerSecond = 87300 / 4 = 21825 tokens/s
actualPrice = 87300 / 1000000 * 6.571428 = 0.5736 USD
pricePerSecond = 0.5736 / 4 = 0.1434 USD/s

Result: this simple 4-second 720p text-to-video task was observed at about $0.14/sec.

実測ケース2：reference video generation#

Request profile:

• Model: doubao-seedance-2-0
• Type: reference-video generation
• Input: text + previous generated video as reference_video
• Resolution: 720p
• Duration: 4s
• Task ID: cgt-20260617214300-rsnsx
• completion_tokens = 173700
• total_tokens = 173700

Because the request contains video reference input, the billing key is:

billing_key = doubao-seedance-2-0:video1
unitPrice = 28 / 7 = 4.000000 USD / 1M tokens

Calculation:

tokensPerSecond = 173700 / 4 = 43425 tokens/s
actualPrice = 173700 / 1000000 * 4.000000 = 0.6948 USD
pricePerSecond = 0.6948 / 4 = 0.1737 USD/s

Result: this 4-second 720p reference-video task was observed at about $0.17/sec.

2つの実測比較#

This comparison shows why a single per-second price is misleading: video-input requests have a lower unit token price, but may return more tokens, so the final observed per-second cost can still be higher.

顧客向け説明#

Seedance 2.0には固定の秒単価はありません。タスク完了後に返される実際のoutput tokensで課金されます。完了済みタスクから平均コスト/秒を逆算することはできますが、全タスク共通のtokens/sec換算はありません。

If customers ask why there is no fixed second price, the reason is simple: duration is a task parameter, but the final billing unit is the actual output tokens returned after generation.

社内向け提案#

To give customers more stable estimates, collect more real task samples and group them by:

• text-to-video without reference input
• image-to-video
• reference-video generation
• with or without audio
• duration
• prompt complexity
• resolution

Then calculate p50, p75, and p90 tokens/sec. This is much more reliable than guessing a universal tokens/sec number.

Bottom line#

顧客向けには、Seedance 2.0は実際のoutput tokensで課金される、と説明するのが安全です。今回の720p/4秒テストでは、単純なtext-to-videoが約$0.14/s、reference video生成が約$0.17/sでした。

For one API layer across video, image, chat, and other AI models, try Crazyrouter.