FLUX Klein 2 4B Base
FLUX Klein 2 4B Base is Black Forest Labs's image generation model. The base (non-fine-tuned) variant of the compact 4B FLUX Klein 2 model, suitable as a foundation for downstream image generation tasks.
black-forest-labs-flux-klein-2-4b-base |
| Image Generation |
| Active |
| Black Forest Labs |
| Text |
| Image |
| 4B |
| Benchmarks | |
|---|---|
| Elo Rating | 976#252 |
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text·
Image✓
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| FLUX Klein 2 4B Base | — | — | — | — | Current |
| FLUX 2 Dev | — | — | — | — | Available |
| FLUX 2 Dev Flash | — | — | — | — | Available |
| FLUX 2 Dev Turbo | — | — | — | — | Available |
| FLUX 2 Flex | — | — | — | — | Available |
| FLUX 2 Max | — | 67K | — | — | Available |
| FLUX Klein 2 4B | — | — | — | — | Available |
| FLUX Klein 2 9B | — | — | — | — | Available |
| FLUX Klein 2 9B Base | — | — | — | — | Available |
| FLUX.1 Fill Pro | — | — | — | Available | |
| FLUX.1 Dev | — | 4K | $0.100 | $0.100 | Available |