Flux 1

the unit$0.001 per Buzz · Bronze membership $10/month = 10,000 Buzz/month, the cheapest paid tier

the meterFlux 1: 0.9 Buzz per step plus 20 Buzz per epoch of storage; the default run is 2,000 steps / 10 epochs = 2,000 Buzz

the sum$10 / 10,000 Buzz = $0.001 per Buzz. The developer docs give the default Flux 1 run as 2,000 x 0.9 + 10 x 20 = 2,000 Buzz, so $2.00. 1_image is null on purpose: the operation priced here is a training run, not an image.

the verdictCHEAP · cheapest third for this operation

the catchThere is a floor at 80% of the default configuration price (1,600 Buzz = $1.60) and the final cost is quoted before the run is submitted. Other engines on the same docs: SDXL and SD1 cost 0.20 Buzz per step, so the default 2,000-step run is 500 Buzz = $0.50; Flux 2 Klein 4B is 500 Buzz = $0.50 and 9B is 1,000 Buzz = $1.00. Sample-prompt renders during training are charged separately at normal generation rates. Civitai does not publish a flat Buzz cost for one image: generation is priced on a sliding scale by step count and model architecture, which is why there is no image entry for Civitai.