Stepfun

Stepfun

Scale-up intelligence possibilities for everyone

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StepFun is a frontier AI platform building powerful, actionable intelligence with the Step series of models.

Stepfun

Launch date
Step 3.7 Flash
Step 3.7 FlashFlash-speed agents model that can see and act

Launched on May 30th, 2026

Step 3.5 Flash
Step 3.5 FlashFrontier open-source MoE model built for OpenClaw agents

Launched on March 5th, 2026