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    Step 3.7 Flash

    Chat

    Step-3.7-Flash

    Get an API key Try it

    Step 3.7 Flash on FlexAI: StepFun LLM (Multimodal), Apache 2.0 license, served via the OpenAI-compatible Token Factory at the live market-tracked rate.

    Pricing

    Input

    $0.2 / M tokens

    Output

    $1.15 / M tokens

    Context

    128K tokens

    API endpoint

    /v1/chat/completions

    Compatibility

    OpenAI

    Parameters

    201B MoE

    License

    Apache 2.0

    Hardware

    4× H100

    Quantization

    NVFP4

    Estimate your monthly cost

    M tokens
    M tokens
    10M × $0.2/M input$2
    2M × $1.15/M output$2.3
    Estimated monthly cost$4.3

    Estimate only, at the current market-tracked rate. Usage-based; no minimums.

    Get an API key

    Quick Start

    from openai import OpenAI

client = OpenAI(base_url="https://tokens.flex.ai/v1", api_key="your-api-key")

response = client.chat.completions.create(
    model="Step-3.7-Flash",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "What's in this image?"},
            {"type": "image_url", "image_url": {"url": "https://example.com/photo.jpg"}},
        ],
    }],
)

print(response.choices[0].message.content)
    Get an API key Run this model on a dedicated endpoint