Step-3.7-Flash is an open-weight multimodal model developed by Stepfun AI. It supports vision and text inputs and is distributed on Hugging Face for use with Transformers and local inference engines. The model includes a specialized chat template for handling system prompts, tools, and multimodal content.
In the Foundation models & chat space, Step 3.7 Flash takes a focused approach. It focuses on running a fast, multimodal AI model locally or via inference providers without relying on proprietary APIs. Step 3.7 Flash is an open-source project aimed at developers. The project is open source (Open Source). The product ships for the web and the command line.
It is developed by stepfun-ai, and the product first shipped in 2025. Among its 3 catalogued features are Multimodal Input, Chat Template, and Vision Support.
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