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StepFun AI Models

Chinese AI lab building multimodal foundation models. Known for the Step model family, backed by Tencent.

Founded 2023Shanghai, China4 ModelsWebsite →
StepFun logo

Step 3.7 Flash

StepFun

A powerful AI model for general-purpose tasks.

ContextN/A
Speed400 tok/s
InputN/A
OutputN/A
ReasoningNo
Stepfun logo

Step 3.7 Flash

Stepfun

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...

Context256K
Speed400 tok/s
InputText, Image, Video
OutputText
ReasoningYes
StepFun logo

Step 3.5 Flash 2603

StepFun

A powerful AI model for general-purpose tasks.

ContextN/A
Speed294 tok/s
InputN/A
OutputN/A
ReasoningNo
StepFun logo

Step 3.5 Flash

StepFun

A powerful AI model for general-purpose tasks.

ContextN/A
Speed284 tok/s
InputN/A
OutputN/A
ReasoningNo