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    • StepFun AI Provider

    The StepFun AI Provider plugin adds StepFun (阶跃星辰) as a provider for the WordPress AI Client — text, vision and image generation with Step models.

    Features

    • Live model list — fetched from GET /v1/models, so newly released models show up on their own without a plugin update.
    • Text and chat — text generation and chat history, including tool calling, structured output (JSON schema) and stop sequences.
    • Vision — step-3.7-flash and the step-1v-* / *-vision families accept images, so features such as Alt Text Generation work.
    • Image generation — text-to-image with the step-image-* / step-2x-* models, returned inline or as a URL.
    • Reasoning as thought parts — reasoning output is surfaced separately instead of being mixed into the answer.
    • Host picker — a Settings → Bestony AI Provider for StepFun page chooses which StepFun or Step Plan host to talk to.

    Requirements

    • WordPress 7.0 or newer, with the PHP AI Client SDK (bundled in WordPress 7.0, or provided by the AI plugin)
    • PHP 7.4 or newer
    • A StepFun account with API access

    Install

    Install Bestony AI Provider for StepFun from the WordPress plugin directory, or upload the zip through Plugins → Add New → Upload Plugin. Activate it, then open Settings → Connectors, open the StepFun card and paste your API key. If your key is for Step Plan, also pick the matching host on Settings → Bestony AI Provider for StepFun.

    Settings

    Settings → Bestony AI Provider for StepFun chooses the API host:

    OptionBase URL
    Stepfun.com (default)https://api.stepfun.com/v1
    StepPlan at Stepfun.comhttps://api.stepfun.com/step_plan/v1
    Stepfun.aihttps://api.stepfun.ai/v1
    Step Plan at Stepfun.aihttps://api.stepfun.ai/step_plan/v1

    The choice is stored per site and is used for the model list and every generation request.

    Configuration

    The API key is read in order of precedence from:

    1. the STEPFUN_API_KEY environment variable
    2. the STEPFUN_API_KEY PHP constant
    3. the connectors_ai_stepfun_api_key option (Settings → Connectors)

    The most useful optional settings (all environment variables or PHP constants):

    SettingDefaultPurpose
    STEPFUN_DEFAULT_MODELstep-3.7-flashChat model to prefer in pickers and feature filters
    STEPFUN_IMAGE_MODELstep-image-edit-2Image model to prefer in the image generation feature
    STEPFUN_BASE_URLthe host chosen in SettingsAPI base URL; overrides the settings page
    STEPFUN_STRUCTURED_OUTPUTjson_schemajson_schema, json_object, or none

    See the plugin page for the complete list, including timeouts and image sizes.

    Data and privacy

    Prompts you send to the AI, plus whatever the calling plugin or theme adds to them, are sent to StepFun. Your API key is stored on your own site and is only ever sent to the StepFun host configured above. Nothing is sent until your site actually asks the AI Client for a generation. The exact endpoints are listed in the Privacy Policy.

    Support

    Questions or feedback? Visit the Support page.