SourcefulAPI pricing & API key
Every Sourceful model on one page: 4 models. Get one Sourceful API key from YepAPI and pay per request — no subscription, no Sourceful account or waitlist.
No credit card required. Takes 30 seconds.
Sourceful API pricing (4 models)
YepAPI prices per 1M tokens (text) or per output (media), cheapest first. Updated October 23, 2026.
| Model | Price |
|---|---|
| Riverflow 2 Fast | from $0.05/image |
| Riverflow 2.5 Fast | from $0.08/image |
| Riverflow 2 Pro | from $0.32/image |
| Riverflow 2.5 Pro | from $0.52/image |
All Sourceful models
Riverflow 2.5 Pro
Image GenerationRiverflow 2.5 Pro from $0.52 per image — Sourceful's flagship design and packaging image model.
Riverflow 2.5 Fast
Image GenerationRiverflow 2.5 Fast from $0.08 per image — the budget tier of Sourceful's design image model.
Riverflow 2 Pro
Image GenerationRiverflow 2 Pro from $0.32 per image — the previous-generation Sourceful flagship, still available.
Riverflow 2 Fast
Image GenerationRiverflow 2 Fast from $0.05 per image — the quick tier of the previous Riverflow generation.
Start using Sourceful models in 30 seconds
$5 free credit on signup. No credit card required.
Sourceful API through YepAPI
YepAPI provides access to Sourceful models through a unified API endpoint. Instead of managing a separate Sourceful API key and billing account, use your single YepAPI key to call any Sourceful model alongside 263 other AI models from OpenAI, Anthropic, Google, Meta, and more.
All Sourceful models use the same OpenAI-compatible request format. Switch between models by changing the model parameter — no SDK changes, no code rewrites. Pay per token with no monthly minimums.
How to get a Sourceful API key
- Sign up at yepapi.com with Google or email — about 30 seconds, no card.
- Open the dashboard and create an API key (it starts with yep_sk_).
- Call any Sourceful model with that key — the /v1/media/queue endpoint.
- Top up any amount; usage is billed per request.
Sourceful API FAQ
- How much does the Sourceful API cost?
- Each Sourceful model is billed per request — see the pricing table above. There is no monthly fee.
- How do I get a Sourceful API key?
- Sign up at yepapi.com (about 30 seconds), open the dashboard and create an API key. The one key works for all 4 Sourceful models and 263 models from other providers — no separate Sourceful account.
- Is there a free Sourceful API?
- New YepAPI accounts in most countries get free signup credit, enough to try Sourceful models without a card. After that you pay per request; there is no subscription.
Ready to use Sourceful models?
4 Sourceful models included with one API key. $5 free credit on signup. No credit card required.