StepFun

StepFun

11 models in Artifacts Logshuggingface.co/stepfun-ai
Step 5 Preview15 Oct 2026
600BStepFun Model License 1.05.1K · 30d

A new flagship model by StepFun, which follows its peers and comes with a revenue-gated license. Its previous model, Step-3.7, was released under Apache 2.0.

Step-3.7-Flash23 May 2026
198BApache-2.012.7K · 30d

An update to Step-Flash, which is really strong in Math in particular.

Step-3.5-Flash01 Feb 2026
196B (11B active)Apache-2.0247.8K · 30d

StepFun really stepped up its game (no pun intended), releasing a 196B-A11B MoE with strong metrics across the board. It is especially strong in math benchmarks, beating out models that are several times larger than it.

Step-Audio-R1.114 Jan 2026
33BApache-2.0873 · 30d

A speech dialogue model by StepFun.

Step3-VL-10B13 Jan 2026
10BApache-2.07.2K · 30d

A multimodal version of Qwen3 with a rather beefy 1.7B vision encoder and 1.2T tokens of continued, multimodal training, followed by an RL stage.

NextStep-1.123 Dec 2025
14BApache-2.01.4K · 30d

An update to StepFun's image generation model.

Step331 Jul 2025
321BApache-2.038.5K · 30d

A multi-modal MoE by StepFun, one of the Chinese AI tigers.

Step-Audio-AQAA11 Jun 2025
130BApache-2.0189 · 30d

A big (130B) audio generation model based on Step-Omni.

Step-Video-TI2V17 Mar 2025
MIT47 · 30d

The image-to-video variant of StepVideo.

Step-Video-T2V17 Feb 2025
30BMIT67 · 30d

Another release from StepFun: A 30B video generation model with MIT license. It is safe to say that the (open) video generation space is dominated by Chinese labs and companies.

Step-Audio-Chat13 Feb 2025
130BApache-2.0341 · 30d

Stepfun, a Chinese lab, has released a 132B parameter LLM, which can use audio as input and generate it as well.