Sourceful · Image model

Riverflow V2 Fast

sourceful/riverflow-v2-fast

Image

Released Feb 2, 2026

Riverflow V2 Fast is the fastest variant of Sourceful's Riverflow 2.0 lineup, best for production deployments and latency-critical workflows. The Riverflow 2.0 series represents SOTA performance on image generation and...

Specifications

Input: text, image
Output: image
Editing: yes, up to 4 reference images
Images per call: 1
Served by: Sourceful

Request options

Validated against these values; anything else returns 400 with the allowed list.

resolution: 1K, 2K, 4K
aspect_ratio: 1:1, 4:3, 3:4, 3:2, 2:3, 16:9, 9:16, 21:9, auto

Use it

POST /api/v1/images · /images/edits · MCP generate_image · edit_image · full reference

curl https://omnirail.org/api/v1/images \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"sourceful/riverflow-v2-fast","prompt":"a lighthouse at dawn, 35mm film","aspect_ratio":"1:1"}'