Riverflow 2.6 Pro. Sourceful's flagship, with references and cutouts.
Sourceful's Riverflow 2.6 Pro makes and edits images at 1K, 2K or 4K, with up to 10 reference images and transparent PNG output.
- Text and image input
- 1K, 2K or 4K
- 10 aspect ratios plus auto
- Up to 10 reference images
- Transparent PNG backgrounds
Riverflow 2.6 Pro is the flagship of Sourceful's Riverflow 2.6 family, one model for text to image and image to image. It renders at 1K, 2K or 4K in ten aspect ratios plus auto, from 9:16 to 21:9, takes up to 10 reference images, and can return a transparent background.
In our tests a 1K square from a prompt took 87 seconds and billed about 15 cents, an edit with one reference took 141 seconds and about 17 cents, and a transparent cutout came back as a PNG with real alpha in 78 seconds. OpenRouter lists 13, 15 and 17 cents per image at 1K, 2K and 4K, so it bills a little above the list and Treza quotes what we measured. It runs on the canvas, in the Image Generation node.
Up to 10 references
Hand it up to 10 images of your product, label or character and the prompt puts them in a new set. Our one-reference edit kept the shirt and moved it onto marble.
Transparent PNGs
Ask for a transparent background and the cutout comes back with a real alpha channel, ready to lay over any layout.
Ten aspect ratios
1:1, 4:3, 3:4, 3:2, 2:3, 5:4, 4:5, 16:9, 9:16 and 21:9, plus auto, from vertical stories to ultrawide headers.
1K to 4K
Draft at 1K and render the final at 2K or 4K with the same prompt and references.
What to make with Riverflow 2.6 Pro
Real prompts, and what comes back. Every one runs as a node on the Treza canvas.
“A ceramic cup of coffee on a sunlit wooden cafe table, steam rising, shallow depth of field”
A clean commercial still.
“The same folded shirt (attached) on a white marble counter in a bright studio”
Your product in a new set.
“A ceramic coffee cup as a product cutout on a transparent background”
A transparent PNG to place on any layout.
“A 4K hero image of a skincare range on wet stone”
A large final for print or crop.
“This label (attached) on these three bottle shapes (attached)”
Packaging mockups from your own assets.
“A 4:5 feed post of a sneaker on a pastel podium, soft shadow”
A still sized for a social feed.
Riverflow 2.6 Pro is one node on a canvas
Chain it with language, image, and video models, then publish the whole pipeline as an API. See how a full AI video pipeline fits together.
- Step 01
Draft the brief
A language model node expands a one-line idea into a detailed, on-brand prompt before it ever reaches the model.
- Step 02
Generate with Riverflow 2.6 Pro
Run variants in parallel, compare against other models on the same prompt, and keep every result in run history.
- Step 03
Publish it as an API
The pipeline becomes a versioned endpoint. Your product calls it with the typed /invoke API or any OpenAI SDK.
Riverflow 2.6 Pro as an API, priced per image
The Riverflow 2.6 Pro API
Build a pipeline with Riverflow 2.6 Pro on a node and publish it. It becomes a versioned HTTP endpoint: the typed /invoke route enqueues a run and returns a run id to poll, and an OpenAI-compatible route works with SDKs you already use. Agents connect over MCP the same way. Your prompt engineering ships inside the pipeline, so every caller gets your quality, and swapping the model later does not change the API your product calls.
Riverflow 2.6 Pro pricing
Prepaid credits, no subscription. Each image is charged at Riverflow 2.6 Pro's own rate from your balance, shown before you run, and a failed generation costs nothing. Credit packs start at $5 and never expire, which suits spiky production schedules. Run history records the cost of every generation, per node, so spend is auditable rather than a surprise.
Riverflow 2.6 Pro, answered
What does Riverflow 2.6 Pro cost?
OpenRouter lists 13, 15 and 17 cents per image at 1K, 2K and 4K. Our tests billed a little more: about 15 cents for a 1K image from a prompt and about 17 cents with one reference image. Treza quotes the measured amounts before a run, and a failed generation costs nothing.
How is Riverflow 2.6 Pro different from Riverflow 2.5 Pro?
Both go up to 4K with up to 10 references and transparent backgrounds. 2.6 Pro adds the 5:4 and 4:5 ratios, and in our tests billed about 15 cents for a 1K image against about 25 cents on 2.5 Pro. Run the same prompt on both, one dropdown apart, and keep the better take.
Can I use Riverflow 2.6 Pro in chat?
It runs on the canvas, in the Image Generation node, where renders of a minute or two do not hold up a chat turn. The pipeline it sits in can be published as an API endpoint. In chat, Riverflow 2.5 Fast is the Riverflow to ask for.
How much does Riverflow 2.6 Pro cost on Treza?
Treza uses prepaid credits with no subscription. Each image is charged at Riverflow 2.6 Pro's rate from your balance, and only successful generations are charged. Credit packs start at $5 and never expire.
Can I call Riverflow 2.6 Pro through an API?
Yes. Build a pipeline that uses Riverflow 2.6 Pro and publish it as a versioned HTTP endpoint. Call the typed /invoke API from your product, or point any OpenAI SDK at the OpenAI-compatible endpoint. If a better model ships later, swap it on the node without changing the API your product calls.
Your first video is one prompt away.
Generate your first video, image, or draft today. Prepaid credits, no subscription.