Seedance 2.0 - ByteSpike

Vendor: ByteDance Model ID: seedance-2.0 Capability: 1080p · up to 8s · text + image init · CJK prompts · async via tasks API Pricing: per second, mid tier (live rate) Seedance 2.0 is the standard tier of the new ByteDance video family. Same character-motion strengths as 1.5 Pro with measurably better consistency across long clips (faces don’t drift, hand counts stay correct over 8 seconds). Native CJK prompt understanding. Default ByteDance-family pick when you want 2.0 quality without the Pro latency.

Submit

curl https://llm.bytespike.ai/v1/tasks/submit \
  -H "x-api-key: $BYTESPIKE_API_KEY" \
  -H "content-type: application/json" \
  -d '{
    "model": "seedance-2.0",
    "prompt": "一只柴犬在草坪上奔跑追逐飞盘，慢动作",
    "duration_seconds": 6,
    "resolution": "1080p"
  }'

Body parameters

Same shape as Seedance 1.5 Pro; max duration_seconds is 8 (vs 6).

Submit + poll

Standard tasks shape. Recommended cadence: 2s for first 60s, then 5s up to 180s.

{"task_id": "task_…", "status": "queued", "estimated_credits": 0.36}

Code examples

curl https://llm.bytespike.ai/v1/tasks/submit \
  -H "x-api-key: $BYTESPIKE_API_KEY" \
  -H "content-type: application/json" \
  -d '{"model": "seedance-2.0", "prompt": "柴犬奔跑追飞盘", "duration_seconds": 6, "resolution": "1080p"}'

Errors

Standard — same as Seedance 1.5 Pro.

When to use

Default ByteDance video tier for new work.
Character motion in 5–8s clips, especially with CJK prompts.
For higher fidelity, see Seedance 2.0 Pro.
For latency win at lower fidelity, see Seedance Fast.

Limits

Limit	Value
Max duration	8s
Resolutions	720p, 1080p
Aspect ratios	16:9, 9:16, 1:1
Supports image init	Yes
Typical latency for 6s clip	60-90s
Async via tasks API	Yes

Seedance 1.5 Pro Seedance 2.0 Pro

​Submit

​Body parameters

​Submit + poll

​Code examples

​Errors

​When to use

​Limits