Black Forest Labs model product
FLUX.2 [klein] 4B
2 [klein] 4B is an image model from Black Forest Labs.
Updated Sep 8, 2026. Default version: FLUX.2 [klein] 4B
LLMBoard Image Generation Score17.8FLUX.2 [klein] 4B
Coverage100%9 benchmark families
Context windowN/ATokens
Native catalog priceN/APrice unavailable
FLUX.2 [klein] 4B Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
FLUX.2 [klein] 4B Benchmark Results
Benchmark scores for FLUX.2 [klein] 4B.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkLM Arena Image Edit | Score1,187.77 rating | Rank32 | Participants41 | Percentile22.50% | EvidenceA | Evaluated |
| BenchmarkArtificial Analysis Image Editing | Score935.00 elo | Rank51 | Participants73 | Percentile30.56% | EvidenceB | EvaluatedN/A |
| BenchmarkLM Arena Text To Image | Score1,030.03 rating | Rank53 | Participants62 | Percentile14.75% | EvidenceA | Evaluated |
| BenchmarkArtificial Analysis Text To Image | Score861.00 elo | Rank114 | Participants156 | Percentile27.10% | EvidenceB | EvaluatedN/A |
FLUX.2 [klein] 4B Arena Results
Preference and agent-evaluation results for the default version.
Sort by
Arena | Category | Rank | Rating / score | Votes | Observations | Result date |
|---|
| Arenaimage edit | Categorymulti image edit | Rank25 | Rating / score1,166.47 | Votes147,232 | ObservationsN/A | Result date |
| Arenaimage edit | Categoryoverall | Rank32 | Rating / score1,187.77 | Votes507,132 | ObservationsN/A | Result date |
| Arenatext to image | Categorycartoon | Rank52 | Rating / score1,022.98 | Votes53,472 | ObservationsN/A | Result date |
| Arenatext to image | Categoryportraits | Rank52 | Rating / score1,054.26 | Votes32,902 | ObservationsN/A | Result date |
| Arenatext to image | Categoryoverall | Rank53 | Rating / score1,030.03 | Votes144,507 | ObservationsN/A | Result date |
| Arenatext to image | Categoryphotorealistic | Rank53 | Rating / score1,047.23 | Votes61,066 | ObservationsN/A | Result date |
| Arenatext to image | Category3d modeling | Rank54 | Rating / score1,030.51 | Votes14,001 | ObservationsN/A | Result date |
| Arenatext to image | Categoryart | Rank54 | Rating / score1,028.06 | Votes19,422 | ObservationsN/A | Result date |
| Arenatext to image | Categorycommercial design | Rank56 | Rating / score1,026.57 | Votes56,141 | ObservationsN/A | Result date |
| Arenatext to image | Categorytext rendering | Rank56 | Rating / score1,014.84 | Votes52,381 | ObservationsN/A | Result date |
FLUX.2 [klein] 4B Pricing
Prices are shown in the model's native media unit and resolution tier.
- Native price
- N/A
- Price unit
- N/A
- Tier
- Standard
- Tracked offerings
- 0
No price available
This model does not have a current media price.
Media catalog prices are not converted into token input or output prices.
FLUX.2 [klein] 4B Runtime Performance
Provider-specific output speed and catalog latency for FLUX.2 [klein] 4B. Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
FLUX.2 [klein] 4B Specifications
Technical details for the model's default version.
- Version
- FLUX.2 [klein] 4B
- Released
- Unknown
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- N/A
- Max output
- N/A
- Inputs
- image, text
- Outputs
- image
- Open weights
- No
- License
- Unspecified
FLUX.2 [klein] 4B Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionFLUX.2 [klein] 4B | ReleasedN/A | LLMBoard17.81 | ParametersN/A | ContextN/A | Max outputN/A | Open weightsNo | LicenseUnspecified |
Models similar to FLUX.2 [klein] 4B
Recommendations prioritize the same model type and family, then the closest LLMBoard score.
BF
FLUX1.1 [pro]
Black Forest Labs
BF
FLUX.1 Kontext [pro]
Black Forest Labs
BF
FLUX.1 Kontext [dev]
Black Forest Labs
BF
FLUX.2 [klein] 9B
Black Forest Labs
BF
Flux Kontext Max
Black Forest Labs
BF
FLUX.2 [klein] Base 4B
Black Forest Labs
What is FLUX.2 [klein] 4B?
Key information about FLUX.2 [klein] 4B and its available data.
2 [klein] 4B is an image model from Black Forest Labs. The model is ranked by Artificial Analysis.
Data as of 2026-09-08.
FAQ
Common questions about FLUX.2 [klein] 4B.
When was FLUX.2 [klein] 4B released?
A release date is not available for the default version.
How much does FLUX.2 [klein] 4B cost?
No native catalog price is currently available for FLUX.2 [klein] 4B.
Who created FLUX.2 [klein] 4B?
FLUX.2 [klein] 4B was created by Black Forest Labs.
What is the context window for FLUX.2 [klein] 4B?
A context window is not available for the default version.
Is FLUX.2 [klein] 4B open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer FLUX.2 [klein] 4B?
No provider offering is currently linked to the default version.