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Hermex

Drive ChatGPT and Gemini from Python — no API keys, no billing, just the free web UI.

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ChatGPT and Gemini are incredibly capable — but their official APIs are expensive, and for many tasks you simply don't need them. If you want to run OCR on an image, generate artwork, extract text from a screenshot, or just ask a quick question in a script, paying per-token for API access is overkill when the free web UI can do the same thing.

Hermex lets you automate ChatGPT and Gemini with Python — no API keys, no billing, no paywalls. It opens a real Chrome browser, types your message, uploads your files, waits for the response, and hands it back to you as a Python object, just like a human would.

from hermex import ChatGPT

response = ChatGPT.simple_query(
    "What does this receipt say?",
    attachments=["receipt.jpg"]
)
print(response.text)

Why Hermex?

  • No API keys — uses the same free web UI you already have access to
  • File support — upload images, PDFs, CSVs, text files, and more; download AI-generated images
  • Bot detection evasion — built on undetected-chromedriver with simulated human typing
  • Persistent sessions — log in once, reuse the session across all future runs
  • Fluent interface — chain method calls for clean, readable scripts