Shotcraft
Image generation

FLUX.2 [klein] (4B / 9B)

Size-distilled open-weights members of the FLUX.2 family, released January 2026 in 4B and 9B sizes plus 'Base' checkpoints intended for fine-tuning and LoRA training.

An image model by Black Forest Labs · read 2026-08-14 · sourcing high

Weights
Downloadable
API
Yes
Commercial use
Depends which variant you download

They keep text-to-image and single/multi-reference editing from the larger models at much lower cost and latency. Licensing differs by size: the 4B line is Apache 2.0, the 9B line is not.

Commercial use — Depends which variant you download

The licence splits by size. FLUX.2 [klein] 4B and 4B Base are Apache 2.0 with no revenue threshold. The 9B variants are under the FLUX Non-Commercial License, where commercial use requires a paid BFL licence.

  • Depends on your plan tier. The 9B, 9B KV and 9B Base variants require a paid BFL licence for commercial use.

This entry was written by hand from the licence wording quoted above, because the source dataset's yes/no field was misleading here. Read the licence before you rely on any of this. Nothing on this page is legal advice, and this site does not tell you a model is cleared for commercial use.

Specification

Vendor figures, read 2026-08-14Read from Black Forest Labs's own documentation on 2026-08-14. Vendors change these between model versions without announcing it, so check theirs before you commit a shot to a number. Sourcing for this entry is strong: the figures came from pages we retrieved and read. Check the vendor's current documentation

What it takes in
text, image
What it makes
image
Maximum resolution
not established
Aspect ratios
not established
Controls
image-to-image, reference-character-consistency, style-reference, editing-by-instruction
Weights
Downloadable
API
Yes
Pricing
hosted per image: from $0.014 (klein 4B), from $0.015 (klein 9B). Weights free to download.
Released or updated
2026-01

Maximum resolution and supported aspect ratios are not established here. That means no page we could retrieve stated them, not that the model lacks them.

Strengths

  • Apache 2.0 at the 4B size is unusually permissive for a frontier-family model
  • Cheapest FLUX hosted endpoints
  • Base checkpoints published specifically for fine-tuning and LoRA

Weaknesses

  • The 9B variants are non-commercial, which is easy to mix up with the Apache 4B
  • Distilled quality below [pro]/[max]
  • No published resolution ceiling

Best for

Where the sources disagree

Recorded rather than resolved. Picking the tidier number would hide the fact that the vendor's own pages do not agree.

What to understand before using it

Explainers naming the mechanisms this model's own documentation mentions.

MCP servers that front Black Forest Labs

Servers in the media MCP directory whose own description or homepage names this vendor. Absence of a server here is not evidence that none exists: most publish no tool list at all.

See it from the vendor

Shotcraft hosts no sample output. Judging a model means watching its own showreel with your own eyes, and a clip re-hosted here would be a clip we chose.

Nearby in the directory

FLUX.1 Kontext [pro] / [max]

Instruction-driven image editing models from the FLUX.1 generation (2025), still exposed as live /flux-kontext-pro and /flux-kontext-max endpoints. Th

Image generation

FLUX.2 [dev]

32-billion-parameter open-weights checkpoint that does text-to-image plus single- and multi-reference editing in one model, released 25 November 2025

Image generation

FLUX.2 [flex]

Hosted FLUX.2 variant that exposes sampling steps and guidance scale as API parameters, letting callers trade quality and prompt adherence against spe

Image generation

Sources

Read on 2026-08-14. A source that has changed since then will not be reflected here until the next pass.