# StepFun Models via Hanzo AI — 2 models

> Access all 2 StepFun models through Hanzo's OpenAI-compatible API. Single API key, unified billing, no rate limit juggling.

[Models](https://hanzo.ai/models)/StepFun

# StepFun Models via Hanzo AI

2 models available

Access all 2 StepFun models through Hanzo's OpenAI-compatible API. Single API key, unified billing, no rate limit juggling.

[Get API Access](https://hanzo.ai/signup)[API Docs](https://docs.hanzo.ai)

[StepFun: Step 3.5 Flash262KStep 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....text](https://hanzo.ai/models/stepfun/step-3.5-flash)[StepFun: Step 3.7 Flash262KStep 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...text](https://hanzo.ai/models/stepfun/step-3.7-flash)

## Use StepFun models via Hanzo

One API key. Unified billing. OpenAI-compatible. Works with every existing SDK.

[Start Free](https://hanzo.ai/signup)[Browse All Models](https://hanzo.ai/models)