Riverflow V2 Fast
Provider: Sourceful
OpenRouter ID: sourceful/riverflow-v2-fast
Released: February 2026
Capabilities
- Text rendering: Good — integrated reasoning for text accuracy. Uniquely supports custom font file inputs ($0.03 each, max 2 fonts). Can specify Inter, Montserrat, or any brand font exactly.
- Image input: Yes — recommends image URLs rather than base64. Also supports super-resolution references ($0.20 each, max 4) to enhance specific elements.
- Sizes: 1K and 2K only — no 4K support
- Request size limit: 4.5MB
Pricing
| Size | Cost |
|---|---|
| 1K | $0.02 / image |
| 2K | $0.04 / image |
| Custom font | $0.03 each (max 2) |
| Super-res reference | $0.20 each (max 4) |
Best For
- Production-speed generation with brand-specific typography
- Ads where exact font matching matters (Inter, Montserrat)
- High-volume output at low cost
Limitations
- No 4K output
- 4.5MB request size cap
- Image inputs prefer URLs over base64
See Also
- FLUX.2 Flex — better typography quality, supports 4K
- Seedream 4.5 — comparable pricing, better portrait work
- AI Image Model Capabilities — OpenRouter — full comparison