StepFun (阶跃星辰)

Shanghai AI startup building large-scale multimodal models under the Step brand, targeting top-tier reasoning benchmarks.

What They Do

StepFun develops frontier foundation models with a focus on multimodal capabilities (image understanding, long video analysis) and strong Chinese-language performance. Step-2 achieved competitive results in mathematics and reasoning benchmarks.

Mission

Build frontier multimodal AI that advances human-level understanding and reasoning.

Available Models