Skip to contentx402 is live on Robinhood Chain: agents can now pay for any model, per call, in USDG →
OmniRail
← All models

Sourceful · Image model

Riverflow V2.5 Fast

sourceful/riverflow-v2.5-fast
  • Image
Released Jun 4, 2026

Riverflow V2.5 Fast is the speed-optimized variant of Sourceful's Riverflow 2.5 lineup, best for production deployments and latency-critical workflows. The Riverflow 2.5 series is a unified text-to-image and image-to-image family...

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
aspect_ratio
1:1, 4:3, 3:4, 3:2, 2:3, 16:9, 9:16, 21:9, auto
output_format
jpeg
background
auto, transparent, opaque

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-v2.5-fast","prompt":"a lighthouse at dawn, 35mm film","aspect_ratio":"1:1"}'