Prompt Generator

Black Forest Labs

FLUX.2 [flex]

FLUX.2 [flex] is the FLUX.2 variant tuned for typography, served through OpenRouter. An image costs 95 credits. Unlike the other FLUX.2 tiers it bills reference photos by size, at 91 credits for every megapixel of each photo you upload, so small references keep the price down.

FLUX.2 [flex] is made by Black Forest Labs. Prompt Generator is independent and not affiliated with Black Forest Labs; we run the model through OpenRouter.

95 credits
Model
FLUX.2 [flex] · Black Forest Labs
Cost
95 credits

Your results appear here when you press Generate.

Specs

Vendor
Black Forest Labs
Type
Text to image
Price
95 credits per image
Aspect ratios
1:1, 4:3, 3:4, 16:9, 9:16
Reference images
up to 8
Input surcharge
91 credits per megapixel of each reference image
Served via
OpenRouter

Best for

  • Posters and covers where the lettering matters
  • Logos and labels inside a scene
  • Text-to-image work without references

Tips

  • Resize references before uploading: a 1 megapixel photo adds 91 credits, a 12 megapixel phone photo about 1,090.
  • Quote the exact words you want rendered and name the font style.

Tools that use FLUX.2 [flex]

AI Logo Generator

Image

Type your brand name, what you do and a style. Recraft V4.1 Vector draws the logo as an SVG, so it stays sharp on a browser tab and on a delivery van.

YouTube Thumbnail Generator

Image

Write the video title, a short line of text and the expression, add your photo if you want to be in it, and get a 16:9 thumbnail with lettering big enough to read on a phone.

AI Poster Generator

Image

Type the headline, the details line and the picture you want, choose a style, and get a portrait poster or flyer with the words spelled as you wrote them. GPT Image 2 by default.

Questions

1How many credits does FLUX.2 [flex] use?
95 credits per image, one image per run. Each reference photo adds 91 credits per megapixel of its size. If a run fails, the credits go back to your balance; runs stopped by the model's safety filter are refunded up to 10 times a day.
2What can I give FLUX.2 [flex] besides a prompt?
Up to 8 reference photos (PNG, JPEG or WebP, up to 12 MB each). Leave them out and pick Create image to work from the prompt alone, or add them and pick Edit photo. Output sizes: 1:1, 4:3, 3:4, 16:9 or 9:16.
3Can I use what I make with FLUX.2 [flex] in paid work?
Yes, when you made it on a paid plan or after buying credits. Results made only with the free sign-up credits are for personal, non-commercial use. Anything you upload must be yours to use, and people shown in it must have agreed.

Compare with all models.