PromptFixPromptFix
    Interactive Demo

    No sign-up required · Step 1 of 6: Studio

    Step 1 · Studio

    Type a task. We pick the best model. Watch it stream.

    The auto-router analyzes your prompt and routes to GPT-5.4, Claude, or Gemini — whichever wins for that task type. Output streams word-by-word, with live tokens-per-second and cost.

    Task or prompt70 chars

    Write a viral LinkedIn post announcing my AI startup's $2M seed round.

    Task type
    WritingCodingResearchCreativeBusinessEmailSocial
    Model
    AUTO
    AUTO

    PromptFix picks the best model

    GPT-5.4

    Manual select

    Claude

    Manual select

    Gemini

    Manual select

    studio.output

    Click Run to watch the auto-router pick a model

    Live demo · streams from a real example response

    1 / 6