Black Forest Labs · Flux 2 Klein Base 4b Fp8 · active

FLUX.2-klein-base-4b-fp8

FLUX.2-klein-base-4b-fp8 is an open-weight image-generation model published by Black Forest Labs.

black-forest-labs/FLUX.2-klein-base-4b-fp8
Statusactive
InputImage
OutputImage
Context
Total / active parameters4B /
Licenseapache-2.0
APIUnknown
Open weights / self-hostYes / Yes

This page represents one immutable developer model ID. Serving endpoints, pricing, regions, quantizations, and service tiers attach separately and never create duplicate model records.

Provider availability

Serving endpoints and pricing

No directly sourced provider offerings yetPricing and availability stay unknown until collected from each serving provider.

Technical specification

Developer model IDblack-forest-labs/FLUX.2-klein-base-4b-fp8
VersionFLUX.2-klein-base-4b-fp8
ReleasedJan 15, 2026
ArchitectureRectified flow transformer
Maximum outputUnknown
Knowledge cutoffNot reported

Capabilities

generation
ReasoningNo
VisionYes
Tool callingNo

Version lineage

PredecessorUnknown
SuccessorsUnknown
Aliasesblack-forest-labs/FLUX.2-klein-base-4b-fp8, black-forest-labs/FLUX.2-klein-base-4b-fp8

Explicit unknowns

  • Maximum output
  • Tokenizer
  • Knowledge cutoff
  • API availability
  • Provider pricing

Comparable peers

Related model comparisons

All comparisons →

Questions

FLUX.2-klein-base-4b-fp8 FAQs

What is FLUX.2-klein-base-4b-fp8?+

FLUX.2-klein-base-4b-fp8 is an open-weight image-generation model published by Black Forest Labs. It is developed by Black Forest Labs and its current sourced lifecycle status is active.

What inputs and outputs does FLUX.2-klein-base-4b-fp8 support?+

FLUX.2-klein-base-4b-fp8's current record lists Image as input and Image as output.

Is FLUX.2-klein-base-4b-fp8 available through an API?+

FLUX.2-klein-base-4b-fp8's current primary-source record does not establish API availability. No provider endpoint is treated as available without direct provider evidence.

How large is FLUX.2-klein-base-4b-fp8?+

The current record lists 4B total parameters and an unknown active parameter count. Its architecture is Rectified flow transformer.

What capabilities and tasks does FLUX.2-klein-base-4b-fp8 support?+

FLUX.2-klein-base-4b-fp8's recorded capabilities are generation. Its supported tasks are image.

Can FLUX.2-klein-base-4b-fp8 be self-hosted?+

FLUX.2-klein-base-4b-fp8 is an open-weight model. Self-hosting is supported, and the recorded license is apache-2.0.

Does FLUX.2-klein-base-4b-fp8 have related versions or aliases?+

No predecessor is recorded. No successor is recorded. Recorded aliases are black-forest-labs/FLUX.2-klein-base-4b-fp8.

Which models can FLUX.2-klein-base-4b-fp8 be compared with?+

The current compatible peer set includes FLUX.2-klein-4b-fp8, stable-diffusion-3.5-medium, stable-diffusion-3.5-large, Ministral-3-3B-Instruct-2512, and Ministral-3-3B-Base-2512. Compatibility requires shared sourced modalities and tasks; it does not imply that one model is better. Browse model comparisons

How current is the Model Markets record for FLUX.2-klein-base-4b-fp8?+

FLUX.2-klein-base-4b-fp8 was last verified Aug 28, 2026 from Black Forest Labs's primary source, “black-forest-labs/FLUX.2-klein-base-4b-fp8 developer model repository.” The evidence is classified as official fact.

Primary evidence

Sources and observation date