Black Forest LabsImage modelPreview
FLUX.2 Klein 9B Preview
n/aUser voteshigher is better
n/aour own rating0 to 100
n/aper imagelower is better
0out of 100first value
Summary
FLUX.2 Klein 9B Preview is an image model option from Black Forest Labs. The API reference establishes a separate preview service but does not map it conclusively to a published weight-file hash.
Popularity compared
How often the model is searched for, used and mentioned, compared with every model of its category.
Popularity index
The 100 most popular models of this category, 0 to 100, higher is more popular
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As of November 2026 · Source: gradually.ai popularity index
Over time
First value from November 2, 2026. The timeline appears from the second week.
Head-to-head comparisons
Show all comparisons (139)
All specifications
Architecture
Licence and access
- Lifecycle
- Preview API route with newer quality/speed improvements; the stable 9B route remains separate
- Source: Lifecycle
API
- API model ID
- The BFL API lists /v1/flux-2-klein-9b-preview as a separate preview route. It recommends the stable 9B route for regular production use.
- Source: API model ID
Further details
- Checkpoint distinction
- The API reference establishes a separate route but does not map it conclusively to a published weight-file hash. Treat it as a preview service variant, not a confirmed new checkpoint.
- Source: Checkpoint distinction
Sources and data date
| Type | Evidence and data date |
|---|---|
| Additional source | Black Forest Labs (retrieved November 1, 2026) |
| Additional source | Black Forest Labs (retrieved November 1, 2026) · Black Forest Labs · Editorial description reviewed November 1, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Ollama: cumulative downloads for the popularity index |
| Additional source | Replicate: cumulative runs for the popularity index |
| Additional source | Google Trending Now: limited feed selection for Germany and the US |
| Additional source | Creative Commons Attribution 4.0 |