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