FLUX 3 Video Image-to-Video API

black-forest-labs/flux-3-video-i2v

Animate a still image into video with FLUX 3 Video Image-to-Video by Black Forest Labs through the Solo Router API. $0.221 / second, billed from prepaid credit.

Example request

# 1. start the job (charged only when the video is ready)
curl https://solorouter.ai/api/v1/videos \
  -H "Authorization: Bearer $SOLO_KEY" -H "Content-Type: application/json" \
  -d '{"model": "black-forest-labs/flux-3-video-i2v", "prompt": "a paper boat on a rainy street", "image_url": "https://example.com/start.jpg", "seconds": 5}'
# 2. poll until "status": "completed", then download
curl https://solorouter.ai/api/v1/videos/vid_... -H "Authorization: Bearer $SOLO_KEY"
curl -o video.mp4 https://solorouter.ai/api/v1/videos/vid_.../content -H "Authorization: Bearer $SOLO_KEY"

More from Black Forest Labs

Model	Context	Input / 1M	Output / 1M	Cached / 1M
FLUX 3 Video black-forest-labs/flux-3-video · video	—	$0.221 / second
FLUX 3 Max Video black-forest-labs/flux-3-max-video · video	—	$0.221 / second
FLUX 3 Max Image-to-Video black-forest-labs/flux-3-max-video-i2v · video	—	$0.221 / second

Frequently asked questions