Skip to main content
Vendor: ByteDance Model ID: seedance-2.0-pro-fast Capability: 1080p · up to 8s · text + image init · CJK prompts · async via tasks API Pricing: per second, pro-fast tier (live rate) Seedance 2.0 Pro Fast is the latency-tuned Pro variant. Roughly half the end-to-end latency of full Pro on bounded prompts (5–8s clips, 720p/1080p) with output that holds against Pro on most A/B tests. Cap is 8 seconds (vs 10 on Pro). Right pick when the deadline is non-negotiable but you still want Pro-tier fidelity.

​
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-pro-fast",
    "prompt": "Aerial drone over a coral reef, school of fish swimming below",
    "duration_seconds": 6,
    "resolution": "1080p"
  }'

​
Body parameters

Same shape as Seedance 2.0 Pro. Max duration_seconds is 8.

​
Submit + poll

{"task_id": "task_…", "status": "queued", "estimated_credits": 0.72}
Recommended cadence: 2s for first 60s, then 5s up to 120s.

​
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-pro-fast", "prompt": "Aerial drone coral reef", "duration_seconds": 6, "resolution": "1080p"}'

​
Errors

Standard.

​
When to use

  • Time-bound hero work where Pro fidelity is required but full Pro latency is unacceptable.
  • Production agent flows where each video step has an SLO.
  • For full Pro 10s clips, see Seedance 2.0 Pro.
  • For 5s ultra-fast turnaround, see Seedance Fast.

​
Limits

LimitValue
Max duration8s
Resolutions720p, 1080p
Aspect ratios16:9, 9:16, 1:1
Supports image initYes
Typical latency for 6s clip45-75s
Async via tasks APIYes