step-3.7-flash · StepFun
step-3.7-flash is stepfun's flagship inference model, designed for high-complexity tasks that require deep reasoning and fast execution. It excels at decomposing multi-step problems, performing tool calls, and maintaining consistency across massive datasets. It is the preferred choice for complex workloads such as long-context agents, advanced software engineering, and end-to-end research automation.
step-3.7-flash is stepfun's flagship inference model, designed for high-complexity tasks that require deep reasoning and fast execution. It excels at decomposing multi-step problems, performing tool calls, and maintaining consistency across massive datasets. It is the preferred choice for complex workloads such as long-context agents, advanced software engineering, and end-to-end research automation.
Step 3.7 Flash has a 256,000 token context window.
On AIHubMix, Step 3.7 Flash costs $0.22 per million input tokens and $1.32 per million output tokens. Cached input reads are billed at $0.044 per million tokens.
Step 3.7 Flash accepts text, image and video input.
Step 3.7 Flash is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to step-3.7-flash — no other code changes needed.
Step 3.7 Flash is developed by StepFun. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
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Use Step 3.7 Flash via the AIHubMix unified API — one interface for every major LLM.