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StepFun
// ORGANIZATION

StepFun

China Website

Models (12)

Step 3.7 Flash

StepFun

May 2026 198B 256K ctx
Multimodal Open Weights

StepAudio 2.5 Realtime

StepFun

May 2026
Speech Proprietary

Step Image Edit 2

StepFun

Apr 2026 3.5B
Image Generation Proprietary

Step-Audio-R1.5

StepFun

Apr 2026
Speech Open Weights

Step-Video-T2V

StepFun

Feb 2025 30B
Video Open (Restricted)

Step-1

StepFun

Feb 2025 130B
Language Proprietary

Step-Audio-Chat 130B

StepFun

Feb 2025 130B
Speech Open (Restricted)

Step-Omni

StepFun

Feb 2025 130B
Speech Proprietary

Step-Audio-TTS-3B

StepFun

Feb 2025 3B
Speech Open (Restricted)

Step-1.5V

StepFun

Mar 2024 100B
Vision Proprietary

Step-1X

StepFun

Mar 2024
Language Proprietary

Step-2

StepFun

Mar 2024 1T
Language Proprietary

StepFun has 12 AI models tracked on GenAIList, spanning Multimodal and Speech model types. You can review each model's parameter count, context window, release date and license, then compare StepFun models side by side or check how they rank on independent AI benchmarks. GenAIList keeps pricing, availability and capability data for StepFun up to date so you can pick the right model for your use case.

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