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    • © 2025 OpenRouter, Inc

    Sourceful: Riverflow V2 Fast Preview

    sourceful/riverflow-v2-fast-preview

    Created Dec 8, 20258,192 context
    $0/M input tokens$7.19/M output tokens$7.19/M tokens

    Riverflow V2 Fast Preview is the fastest variant of Sourceful's Riverflow V2 preview lineup. This preview version exceeds the performance of Riverflow 1 Family and is Sourceful's first unified text-to-image and image-to-image model family.

    Pricing is $0.03 per output image, regardless of size.

    Sourceful imposes a 4.5MB request size limit, therefore it is highly recommended to pass image URLs instead of Base64 data.

    Sample code and API for Riverflow V2 Fast Preview

    OpenRouter normalizes requests and responses across providers for you.

    OpenRouter supports image generation through models that have image in their output modalities. These models can create images from text prompts when you specify modalities: ["image", "text"] in your request. The generated images are returned as base64-encoded data URLs in the assistant message. Learn more about image generation.

    In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards.

    Using third-party SDKs

    For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.

    See the Request docs for all possible fields, and Parameters for explanations of specific sampling parameters.