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FLUX.2 [klein] 4B Latest

FLUX.2 [klein] 4B (January 2026) is not the newest FLUX model: FLUX 3 came out October 2026. FLUX.2 [klein] 4B stays available at the same price — here is how they differ.

Released
January 2026
Newest FLUX
No
FLUX 3 is newer
From
$0.001/image
1K
Below official
up to 93%
prices verified October 18, 2026
Create with FLUX.2 [klein] 4BGet API keyAPI docs

Try it

Try FLUX.2 [klein] 4B

Runs on your balance at the price on the button; failed runs are refunded. Results are saved to your account.

Open the full-screen Studio

Timeline

FLUX release timeline

Every FLUX version on CheaperGen. The whole family: FLUX Latest.

  1. October 2026FLUX 3 Image KleinThe open-weights FLUX 3 — 16-step images in seconds, from a fraction of a cent
  2. October 2026FLUX 3Black Forest Labs' newest image model — grounded, layout-aware, up to 4K
  3. August 2026FLUX 3 VideoFLUX goes video — 5–20 s clips with synced audio
  4. January 2026FLUX.2 [klein] 4BThe fastest FLUX.2 — open weights, sub-second, a fraction of a cent
  5. December 2025FLUX.2 [max]The highest-quality FLUX.2 for hero images
  6. November 2025FLUX.2 [flex]FLUX.2 with adjustable steps and guidance — best for text and fine detail
  7. November 2025FLUX.2 [pro]Black Forest Labs' production image model — photoreal, fast, up to 4 MP
  8. May 2025FLUX.1 Kontext [max]Kontext with stronger prompt following and typography
  9. May 2025FLUX.1 Kontext [pro]Instruction-based image editing that keeps characters consistent (legacy)

What changed

What's new in FLUX.2 [klein] 4B vs FLUX.1 Kontext [pro]

  • Lower price: $0.001/image vs $0.0348/image at 1K (97% less).
  • Higher maximum resolution: 2K vs 1K.
  • Newer model (released January 15, 2026).
FLUX.2 [klein] 4B and FLUX.1 Kontext [pro] side by side
FLUX.2 [klein] 4BFLUX.1 Kontext [pro]
ReleasedJanuary 2026May 2025
Sizes1K, 2K1K
Edit inputsUp to 4Up to 4
From$0.001/image$0.0348/image

What changed

What FLUX 3 adds over FLUX.2 [klein] 4B

  • Higher maximum resolution: 4K vs 2K.
  • Edits with up to 10 input images (vs 4).
  • More aspect ratios: 15 vs 7.
  • Newer model (released October 1, 2026).
FLUX 3 and FLUX.2 [klein] 4B side by side
FLUX 3FLUX.2 [klein] 4B
ReleasedOctober 2026January 2026
Sizes1K, 1.5K, 2K, 4K1K, 2K
Edit inputsUp to 10Up to 4
From$0.0317/image$0.001/image

Updates

Latest FLUX.2 [klein] 4B updates on CheaperGen

Price changes, new options and notices, newest first. Every model: changelog.

No changes since FLUX.2 [klein] 4B launched on CheaperGen (January 2026): same prices and options. Official prices were last verified October 18, 2026.

Monthly plans lower prices on most models; you can still pay as you go. From $0.0009/image on Max ($4,999/month).

Current FLUX.2 [klein] 4B prices Live status

Newer FLUX versions: FLUX 3 and FLUX 3 Image Klein.

FAQ

FLUX.2 [klein] 4B: latest questions

FLUX 3, released in October 2026. FLUX.2 [klein] 4B came out in January 2026. The FLUX Latest page tracks every version.

January 2026. The FLUX version before it, FLUX.1 Kontext [pro], came out in May 2025.

Lower price: $0.001/image vs $0.0348/image at 1K (97% less). Higher maximum resolution: 2K vs 1K. Newer model (released January 15, 2026).

FLUX 3 and FLUX 3 Image Klein are newer. FLUX.2 [klein] 4B stays available at the same price; Lower price: $0.001/image vs $0.0019/image at 1K (50% less).

Yes, in the Studio and the API. Live checks every 5 minutes are on the [FLUX.2 [klein] 4B API status](/models/bfl/flux-2-klein-4b/status) page.

FLUX.2 [klein] 4B is Black Forest Labs' open-weights model. CheaperGen provides API access to the open weights, run on GPU inference for open-source models, and does not own the model. Trademarks belong to their respective owners.