| Type | Frontier labs |
|---|---|
| Founded | 2023 |
| Founders | Jiang Daxin |
| Headquarters | Shanghai, China |
| Website | stepfun.com |
StepFun research
50 papers in OpenAlex list an author affiliated with StepFun AI (China) in the last 12 months. The most cited:
- Attention Reallocation: Towards Zero-cost and Controllable Hallucination Mitigation of MLLMs26 Dec 2025 · 9 citations
- GitTaskBench: A Benchmark for Code Agents Solving Real-World Tasks Through Code Repository Leveraging14 Mar 2026 · 4 citations
- Sparse-vDiT: Unleashing the Power of Sparse Attention to Accelerate Video Diffusion Transformers14 Mar 2026 · 3 citations
- SpotAgent: Grounding Visual Geo-localization in Large Vision-Language Models through Agentic Reasoning7 Aug 2026 · 2 citations
- DIP: Efficient Large Multimodal Model Training with Dynamic Interleaved Pipeline10 Mar 2026 · 1 citations
Source: OpenAlex (CC0), institution StepFun AI (China), read 2 Nov 2026.
StepFun models
Latest releases
- stepfun-ai/Step-5-Preview-NVFP414 Oct 2026
- stepfun-ai/Step-5-Preview-BF1620 Sep 2026
- stepfun-ai/Step-5-Preview20 Sep 2026
- stepfun-ai/Step-3.7-Flash-GGUF28 May 2026
- stepfun-ai/Step-3.7-Flash-NVFP427 May 2026
- stepfun-ai/Step-3.7-Flash-FP823 May 2026
Most downloaded
- stepfun-ai/Step-3.5-Flash226,377 downloads (30 days)
- stepfun-ai/GOT-OCR2_0154,801 downloads (30 days)
- stepfun-ai/GOT-OCR-2.0-hf54,246 downloads (30 days)
- stepfun-ai/step337,877 downloads (30 days)
- stepfun-ai/Step-3.7-Flash11,749 downloads (30 days)
Source: Hugging Face Hub, organisation stepfun-ai, read 2 Nov 2026.
StepFun: quick answers
Who founded StepFun?
StepFun was founded in 2023 by Jiang Daxin.
People at StepFun
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