About GhostWriter AI

Why we built this

AI writing tools are useful. AI detectors are imperfect. The gap between them creates a real problem: students, writers, and professionals using AI to assist their work get flagged as cheaters — even when they aren't.

We built GhostWriter AI to solve the technical side of that problem. Not to help anyone cheat — but to give writers a tool that makes AI-assisted content sound like the person who wrote it actually wrote it.

How it works

AI detectors don't read for meaning. They measure two statistical properties of text:

• Perplexity — how predictable the next word is. Language models often favour likely word choices, while human writing can be less predictable.
• Burstiness — the variation in sentence length. AI produces uniform, medium-length sentences. Humans mix short punchy sentences with longer, winding ones.

GhostWriter AI varies both qualities while aiming to preserve the original meaning. Standard and Advanced modes use a specialised humanization provider. Shorten and Expand use a separate language model because they also change the draft's length.

Advanced mode makes deeper structural and wording changes than Standard. Results can vary by text and by third-party detector, so every output should be reviewed.

What the tool changes

• Repetitive sentence openings and transitions
• Uniform sentence length and mechanical rhythm
• Overly formal or generic wording
• Structure that feels templated or predictable
• Tone for academic, business, blog, creative, or social writing

Our principles

• Free to try. Visitors receive 150 words per month without an account; a free account raises that allowance to 500 words.
• Honest about results. Third-party detectors can disagree. We do not promise a particular score or guarantee that every detector will classify text alike.
• Limited retention by us. We do not store submitted text in Firestore. Text is sent to the processing provider, while anonymous usage is tracked with a hashed IP identifier.
• Responsible use. GhostWriter AI is a writing tool. Using it to submit fully AI-generated work as your own in a context that prohibits it is your responsibility, not ours.

The team

GhostWriter AI is built and maintained by a small team working across software and writing tools. We launched in 2026 and continue improving the service using product testing and customer feedback.