YepAPI
SourcefulImage Generation/v1/media/queue

Riverflow 2 Pro API

Riverflow 2 Pro from $0.32 per image — the previous-generation Sourceful flagship, still available.

The previous-generation flagship Riverflow model. Maximum-detail design and packaging imagery from $0.32 per image.

No credit card required. Takes 30 seconds.

Riverflow 2 Pro API pricing

Pay per request from your YepAPI balance — no subscription, no monthly minimum. Prices updated October 23, 2026.

BillingPrice
Rate$0.32/image
What it costsPer job
1 imagefrom default size$0.32
100 imagesa product catalog batch$32.00
1,000 imagesa month of app traffic$320.00

2,400+

Developers

1.2M+

API calls served

100+

Endpoints

$0.01

Per call

Yep, that's it.

Try it live

Enter a prompt and generate an image with Riverflow 2 Pro.

POST/v1/media/queue

Drop image or click to upload

For image-to-image editing

Response
Hit "Send Request" to see the response

Riverflow 2 Pro specs

ProviderSourceful
Model IDsourceful/riverflow-v2-pro
Endpoint/v1/media/queue
TypeImage Generation
Aspect ratios1:1, 4:3, 3:4, 3:2, 2:3, 16:9, 9:16, 21:9, auto
Image inputYes

How to get a Riverflow 2 Pro API key

  1. 1

    Create a free account

    Sign up at yepapi.com with Google or email. It takes about 30 seconds and needs no card.

  2. 2

    Create an API key

    Open the dashboard, go to API Keys and create a key. Copy it — it starts with yep_sk_.

  3. 3

    Call Riverflow 2 Pro

    Send a request to /v1/media/queue with the x-api-key header and model "sourceful/riverflow-v2-pro".

  4. 4

    Pay as you go

    Usage is billed per request from your balance. Top up any amount; there is no subscription.

Strengths

✓
Previous flagship

Riverflow 2 Pro remains the reference point for teams that built pipelines before the 2.5 line shipped.

✓
Detail-heavy output

Renders material texture and fine surface detail for close-up product and packaging shots.

✓
Nine aspect ratios

Full framing range from square to 21:9 plus auto.

✓
Reference-image editing

Iterate on an existing mockup by passing it as a reference image.

Quick start

Copy this snippet and start making calls with Riverflow 2 Pro.

// Step 1: Submit job
const res = await fetch('https://api.yepapi.com/v1/media/queue', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "model": "sourceful/riverflow-v2-pro",
    "prompt": "A macro shot of embossed foil lettering on a navy hardcover book, raking light picking out the texture of the cloth binding, shallow depth of field",
    "options": {
      "aspectRatio": "1:1"
    }
  }),
});
const { data } = await res.json();
const jobId = data.jobId;

// Step 2: Poll for result
const status = await fetch(`https://api.yepapi.com/v1/media/status/${jobId}`, {
  headers: { 'x-api-key': 'YOUR_API_KEY' },
});
const { data: job } = await status.json();
// job.status: "pending" | "processing" | "completed" | "failed"
// job.result: { text?, image?, audio?, video? }

Riverflow 2 Pro vs similar models

Every model below runs on the same API key — switch by changing the model ID.

ModelProviderPrice
Riverflow 2 ProSourcefulfrom $0.32/image
Riverflow 2 FastSourcefulfrom $0.05/image
Riverflow 2.5 FastSourcefulfrom $0.08/image
Riverflow 2.5 ProSourcefulfrom $0.52/image
FLUX 3 Image KleinBlack Forest Labsfrom $0.02/image
GPT Image 2OpenAIfrom $0.02/image
GPT Image 1 MiniOpenAIfrom $0.02/image
GPT-5.4 Image 2OpenAIfrom $0.02/image

Why use Riverflow 2 Pro through YepAPI?

✓One API key for all models — no separate accounts
✓No monthly minimums — pay per call
✓Switch models with one line of code
✓Simple REST API — works from any language
✓Unified billing across all providers
✓No rate limits for most use cases

Riverflow 2 Pro API — previous-generation Sourceful flagship

Riverflow 2 Pro is the earlier flagship of Sourceful's image line, still favored for detail-heavy product and packaging renders.

YepAPI keeps it callable on `/v1/media/queue` at about $0.32 per image so existing pipelines keep running while you evaluate Riverflow 2.5.

Start generating in 30 seconds

$5 free credit on signup. No credit card required. Pay per call.

What developers say

“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”

Marcus T.

SEO Platform Founder

“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”

Priya S.

Full-Stack Developer

“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”

Jake R.

Indie Hacker

Frequently asked questions

The previous-generation flagship Riverflow model. Maximum-detail design and packaging imagery from $0.32 per image.

Riverflow 2 Pro costs from $0.32/image through YepAPI, billed per request with no monthly fee. For example, a 1 image (from default size) costs about $0.32.

Sign up at yepapi.com (Google or email, about 30 seconds), open the dashboard and create an API key. The same key works for Riverflow 2 Pro and every other model — no separate Sourceful account or waitlist.

New YepAPI accounts in most countries get free signup credit, enough to test Riverflow 2 Pro without a card. After that you pay per request at the rates above — there is no subscription.

Use "sourceful/riverflow-v2-pro" as the model on /v1/media/queue. The short alias "riverflow-v2-pro" also works.

Ready to use Riverflow 2 Pro?

$5 free credit on signup. No credit card required. Pay per call.

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