Flux 2 Klein 4B
Facts
- Model name
- flux-2-klein-4b
- Maker
- Black Forest Labs
- Context window
- 512 tokens
- Price
- $0.0085 per image
- Providers
- 1 independent provider
- Regions
- global
Providers
- EmpirioLabs AI: global, $0.0085 per image, 512 tokens of context
Scores
- HLE: 5.3, #194 of 273
- GPQA: 29.1, #245 of 250
- AA-LCR: 6.7, #226 of 237
- Terminal-Bench Hard: 0.8, #159 of 166
- LiveCodeBench: 11.2, #126 of 130
- AIME 2025: 12.7, #92 of 100
- MMLU-Pro: 41.7, #129 of 133
- τ²-Bench: 5.0, #166 of 169
- IFBench: 28.3, #167 of 178
Scores: Artificial Analysis (https://artificialanalysis.ai/)
Request
curl https://router.inference.ai.exchange/v1/images/generations \
-H "Authorization: Bearer $LIQUID_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "flux-2-klein-4b",
"prompt": "a cat on a bicycle"
}'Questions
- What is Flux 2 Klein 4B?
- Flux 2 Klein 4B is a model from Black Forest Labs.
- How much does Flux 2 Klein 4B cost?
- Offers now ask $0.0085 image.
- What is the context length of Flux 2 Klein 4B?
- The largest offer takes 512 input tokens. A smaller offer can take less. The exchange skips an offer that cannot take your message.
- What can Flux 2 Klein 4B do?
- Its providers list Text.
- What inputs and outputs does Flux 2 Klein 4B support?
- Text → Text · Images.
- Which providers serve Flux 2 Klein 4B?
- 1 independent provider quote it now, with 1 offer. The table above ranks them by the cost of a typical job.
- How do I call Flux 2 Klein 4B?
- Send "flux-2-klein-4b" as the model in an OpenAI or Anthropic request. The API section links to setup steps for each client.
- When was Flux 2 Klein 4B listed?
- The exchange first listed it on 10/17/2026. This is not its release date.