Black Forest Labs: FLUX.2 Klein 4B

black-forest-labs/flux.2-klein-4b

Released Jan 14, 202640,960 context$0.014 per megapixel

FLUX.2 [klein] 4B is the fastest and most cost-effective model in the FLUX.2 family, optimized for high-throughput use cases while maintaining excellent image quality.

Pricing is based on the output image. The first generated megapixel is charged $0.014. Each subsequent megapixel is charged $0.001.

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Black Forest Labs: FLUX.2 Klein 4B

black-forest-labs/flux.2-klein-4b

Released Jan 14, 202640,960 context$0.014 per megapixel

FLUX.2 [klein] 4B is the fastest and most cost-effective model in the FLUX.2 family, optimized for high-throughput use cases while maintaining excellent image quality.

Pricing is based on the output image. The first generated megapixel is charged $0.014. Each subsequent megapixel is charged $0.001.

Recent activity on FLUX.2 Klein 4B

Total usage per day on OpenRouter

Prompt

Completion

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.

Recent activity on FLUX.2 Klein 4B

Total usage per day on OpenRouter

Prompt

Completion

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.