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SourcefulImage Generation/v1/media/queue

Riverflow 2.5 Fast

Riverflow 2.5 Fast from $0.04 per image — the budget tier of Sourceful's design image model.

The fast, low-cost Riverflow 2.5 tier at about $0.04 per image. Same design orientation and nine aspect ratios, returning JPEG.

No credit card required. Takes 30 seconds.

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 2.5 Fast.

POST/v1/media/queue

Drop image or click to upload

For image-to-image editing

Response
Hit "Send Request" to see the response

Pricing

Per-image: from $0.04/image

Endpoint

/v1/media/queue

Strengths

About $0.04 per image

One of the cheapest design-oriented models on the platform — practical for mockup sweeps and variant testing.

Fast turnaround

Quick renders suit interactive tools and large batch jobs alike.

Nine aspect ratios

Matches the Pro tier's framing options so drafts and finals compose identically.

Reference-image editing

Accepts an uploaded image for restyling and iteration.

Quick start

Copy this snippet and start making calls with Riverflow 2.5 Fast.

// 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-v2.5-fast",
    "prompt": "A minimal product shot of a frosted glass bottle on a pale sand backdrop, single soft shadow, muted sage label, generous negative space",
    "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? }

Why use Riverflow 2.5 Fast 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 2.5 Fast API — design imagery from $0.04

Riverflow 2.5 Fast is the speed-and-cost tier of Sourceful's Riverflow 2.5 line, keeping the design orientation and framing options while cutting per-image cost to around four cents.

Use it on YepAPI's `/v1/media/queue` as the exploration pass, then re-render the chosen concepts on Riverflow 2.5 Pro with the same request shape.

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 fast, low-cost Riverflow 2.5 tier at about $0.04 per image. Same design orientation and nine aspect ratios, returning JPEG.

Pricing for Riverflow 2.5 Fast through YepAPI is based on usage. No monthly minimums — you only pay for what you use.

Sign up for a free API key, then send requests to the /v1/media/queue endpoint.

Ready to use Riverflow 2.5 Fast?

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

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