Flux 2 Klein 4B Base Edit: change one locked still (1cr)

Flux 2 Klein 4B Base Edit is an edit. Point at the object. A new text-to-image throws away the still you approved.

Flux 2 Klein 4B Base Edit is a compact image editing model on the Flux 2 architecture. It enables high-quality instruction-based image edits at an efficient parameter scale, for fast, responsive modification workflows. Categories: edit-image and image-to-image only. Requires an image. Content type is image. No duration. No max resolution listed. Aspects: 16:9, 4:3, 1:1, 3:4, 9:16. Max reference: 4. Display price: 1 credit. There is no text-to-image category on this slug. You cannot start from a blank page.

The still is required; the model is 4B

requires_image is true. Compact (4B) is why you iterate: 1 credit, instruction in, still out. It is not a reason to skip the lock. The approved plate is the input. "Make the label red" is the instruction. A new text-to-image from another Flux slug is a different still.

This is the difference from a dual-mode image model that also generates from text. Klein 4B Base Edit does not list text-to-image. If you do not have a plate, you are on the wrong slug. Find the still on a generate row, then come here.

The door is the AI photo editor. Image-to-image is the job name. Ranked edits: best image editing model. Family: best Flux model and the Flux roster. Flux Kontext is the context-aware sibling if the brief is a different Flux edit line — do not treat Klein 4B as Kontext, or Kontext as this 1-credit 4B pass.

Instruction-based, one credit

1 credit is the display price (per-megapixel on the matrix, min 1, max 1). That is the point of the compact scale: change one object without opening a 7-credit flagship generate. It is also the trap. Teams blow 1-credit edits as if they were free regenerates, writing "do it again, better" instead of pointing at the object.

Point at the object. Name it. Say what changes and what must not. The approved still is the contract. "Again, but warmer" as a full rewrite is how you get a new room at 1 credit a pop until the plate you signed is gone.

Four max references is a small stack, not a moodboard of sixteen. Bring the hero and the few stills that explain the swap. Do not dump the pack.

Compact is not a new generate

Fast, responsive, efficient parameter scale — those words in the description are about edit latency, not about hunting a new look. Hunting is text-to-image on another row. This slug modifies.

No resolution ceiling is listed. Do not assume 4K. Match the input plate and inspect the output at 100% before you call the edit approved. No audio, no duration: this is not a clip. Animate after the 1-credit pass is signed, not instead of it.

Aspects should follow the locked still. A 9:16 product into a 16:9 edit is a crop you did not approve.

Keep the plate, change the object

The test: open the approved file and the edit. Only the named object should have moved. If the room moved, you did not point — you regenerated in spirit. Write a tighter instruction. Spend the next 1 credit. Do not switch to a text-to-image model "to save time." That throws away the still.

FAQ

Can I use Flux 2 Klein 4B Base Edit without an image?

No. requires_image is true. Categories are edit-image and image-to-image. There is no text-to-image on this slug. Generate the plate elsewhere, then edit here for 1 credit.

Why not re-run a Flux text-to-image with the same prompt?

A new text-to-image throws away the still you approved. Klein 4B Base Edit is the 1-credit instruction pass against that file.

Is this the same as Flux Kontext?

No. Different slug, different job. This page is Flux 2 Klein 4B Base Edit: compact, instruction-based, image required, 1 credit. Use Flux Kontext when that is the row you meant.

Does the edit come back as video?

No. Image content type, no durations, audio null. Lock the still at 1 credit, then pick an image-to-video row if you need motion.