Flux is a family of text-to-image and image-editing models from Black Forest Labs. Its model card for FLUX.1 [dev] describes it as "a 12 billion parameter rectified flow transformer capable of generating images from text descriptions". On 8frame, the Flux models you can use are FLUX.2 [pro] (5 credits per image), FLUX 1.1 Pro (6), and two editors: Flux Edit on FLUX.2 [pro] (from 7) and Kontext Max (13).
Correction, 2026-09-30: the first version of this page said Flux Klein and Flux 1.1 Ultra run on the 8frame canvas, and gave per-image dollar prices and quality claims we cannot source. Neither Klein nor Ultra is on 8frame; the prices below are 8frame's own.
How Flux works
Most earlier image generators were diffusion models: they start from noise and remove it step by step. Flux is described by its maker as a rectified flow transformer. Flow-matching models learn a more direct path from noise to image, and the transformer architecture (rather than the U-Net used in many older models) is the same family of architecture used in large language models. In practice, what matters to a user is the output and the price, so compare on your own prompts.
The editing models add a second input: an image you want to change. You describe the change in words ("replace the background with a sunlit kitchen, keep the product unchanged"), and the model edits that image.
Flux on 8frame
| Model | What it does | Credits |
|---|---|---|
| FLUX.2 [pro] | Text-to-image, about one-megapixel sizes | 5 per image |
| FLUX 1.1 Pro | Text-to-image, accepts a reference image | 6 per image |
| Flux Edit (FLUX.2 [pro]) | Edits an image from a text instruction | 7 for an input around one megapixel, more for larger inputs |
| Kontext Max | Edits an image from a text instruction | 13 flat |
Both text-to-image models offer 1:1, 3:4, 4:3, 9:16, 16:9 and 21:9. A credit is $0.01 at pack rate.
Examples
Quick concept variations. Prompt: "brutalist apartment building, overcast sky, wide angle, muted tones". At 5 credits an image on FLUX.2 [pro], fifteen variations are 75 credits.
A product still. Prompt: "glass serum bottle, wet marble surface, macro lens, studio strobe lighting, photorealistic". Compare it with the same prompt on Imagen 4 or Nano Banana Pro before choosing a model for the final.
An edit. Give Flux Edit a photo of a white sneaker on grey and the instruction "change the colorway to navy blue and coral, keep the same lighting and composition". Check the shadow and sole texture stay where they were.
Related concepts
- Imagen 4 vs Flux for photorealism
- AI image editing prices by tool
- AI image generator price per image
FAQ
What is Flux AI? A family of image generation and editing models from Black Forest Labs, described by its maker as a rectified flow transformer.
Which Flux models are on 8frame? FLUX.2 [pro] (5 credits per image), FLUX 1.1 Pro (6), Flux Edit on FLUX.2 [pro] (from 7) and Kontext Max (13). Flux Klein and Flux 1.1 Ultra are not.
Is Flux free? Some Flux weights are published, under licences set by Black Forest Labs; FLUX.1 [dev] is under a non-commercial licence. On 8frame, the canvas is free and unlimited; generation is paid from $19/month.
Sources
- FLUX.1 [dev] model card ("12 billion parameter rectified flow transformer", non-commercial licence): huggingface.co/black-forest-labs/FLUX.1-dev, fetched 2026-09-30
- 8frame Flux models, prices and shapes: the 8frame tool registry, 2026-09-30
Pick the Flux model by the job, not the name. The 8frame canvas is free and unlimited; generation is paid from $19/month.