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StepFun

Model Creator

StepFun (阶跃星辰) is a Chinese AI lab building the Step series of multimodal foundation models (text, vision and audio), offered via its own API with per-token pricing and prompt caching.

Models
9
Prompt Caching
Batch Discount
Tool Calling
Model9
step-1o-audioStep$3.73$8.94
step-1o-turbo-visionStep$0.3725$1.19
step-3.5-flashStep$0.1043$0.3129
step-3.5-flash-2603Step$0.1043$0.3129
step-3.7-flashStep$0.2012$1.21
step-audio-2Step$1.49$10.43
step-audio-r1.5Step$1.49$15.65
stepaudio-2.5-chatStep$1.49$3.73
stepaudio-2.5-realtimeStep$1.49$10.43