Qualifical: AI detector and AI humanizer for your writing

Dear hiring team, I have spent four years running the night shift at a 120-bed hospital, which mostly means I am good at deciding what can wait until morning and what cannot.

The samples were left at room temperature for six hours before we noticed, so the second run is the only one I trust. Everything below comes from that run.

In conclusion, the Treaty of Versailles was a pivotal moment that fundamentally reshaped the geopolitical landscape of Europe for decades to come.

Dear hiring team, I have spent four years running the night shift at a 120-bed hospital, which mostly means I am good at deciding what can wait until morning and what cannot.

The samples were left at room temperature for six hours before we noticed, so the second run is the only one I trust. Everything below comes from that run.

In conclusion, the Treaty of Versailles was a pivotal moment that fundamentally reshaped the geopolitical landscape of Europe for decades to come.

Dear hiring team, I have spent four years running the night shift at a 120-bed hospital, which mostly means I am good at deciding what can wait until morning and what cannot.

The samples were left at room temperature for six hours before we noticed, so the second run is the only one I trust. Everything below comes from that run.

In conclusion, the Treaty of Versailles was a pivotal moment that fundamentally reshaped the geopolitical landscape of Europe for decades to come.

Dear hiring team, I have spent four years running the night shift at a 120-bed hospital, which mostly means I am good at deciding what can wait until morning and what cannot.

The samples were left at room temperature for six hours before we noticed, so the second run is the only one I trust. Everything below comes from that run.

In conclusion, the Treaty of Versailles was a pivotal moment that fundamentally reshaped the geopolitical landscape of Europe for decades to come.

We shipped the new onboarding on Tuesday. Sign-ups held steady, but the number of people who finish the first document went from one in three to almost half.

Our proposal leverages cutting-edge methodologies to foster meaningful community engagement and unlock sustainable, long-term impact across diverse stakeholder groups.

My grandmother kept her recipes on the backs of electricity bills. Half of them are missing a step, and I have stopped thinking of that as an accident.

We shipped the new onboarding on Tuesday. Sign-ups held steady, but the number of people who finish the first document went from one in three to almost half.

Our proposal leverages cutting-edge methodologies to foster meaningful community engagement and unlock sustainable, long-term impact across diverse stakeholder groups.

My grandmother kept her recipes on the backs of electricity bills. Half of them are missing a step, and I have stopped thinking of that as an accident.

We shipped the new onboarding on Tuesday. Sign-ups held steady, but the number of people who finish the first document went from one in three to almost half.

Our proposal leverages cutting-edge methodologies to foster meaningful community engagement and unlock sustainable, long-term impact across diverse stakeholder groups.

My grandmother kept her recipes on the backs of electricity bills. Half of them are missing a step, and I have stopped thinking of that as an accident.

We shipped the new onboarding on Tuesday. Sign-ups held steady, but the number of people who finish the first document went from one in three to almost half.

Our proposal leverages cutting-edge methodologies to foster meaningful community engagement and unlock sustainable, long-term impact across diverse stakeholder groups.

My grandmother kept her recipes on the backs of electricity bills. Half of them are missing a step, and I have stopped thinking of that as an accident.

Chapter three was supposed to be the easy one. The data was in, the figures were drawn, and all that was left was to say what it meant, which I assumed would take a weekend.

Looking back, the cuts were the easy part. Deciding what the chapter was for took longer, and it started with a conversation I had been putting off since the spring.

The thesis statement for the third chapter of my dissertation needed to be rewritten several times before it became apparent that the issue was not with the sentence at all, but with the arguments presented in it. I did not know the arguments even. The advisor circled one paragraph, put a margin comment, saying “you do not believe in this,” and gave it back without further comments.

In today’s fast-paced academic landscape, effective communication is more important than ever. By leveraging clear structure and engaging language, researchers can unlock the full potential of their work. Ultimately, authenticity remains a crucial element in fostering meaningful connections with readers, ensuring that every argument resonates on a deeper level.

My return edit contained four fewer pages than the first edit. The only feedback I got this time from my advisor was a query about the second set of experiments; I took this as a step forward. But still, the initial edit is filed away in the folder mainly as a testimony to how much I could write and say nothing.

Essay draft, due tomorrow

Remote teams trade hallway conversations for long stretches of focus (Okafor, 2021). Fewer interruptions, but also fewer of the small questions that save a week.

8% likely AI

This paradigm shift underscores the multifaceted nature of modern work, fostering collaboration across an evolving landscape.

90% likely AI

Academic tone

Blog post, publishing at 9

Mostly, I learned to ship before I felt ready. The first version embarrassed me for a day, and then the comments started telling me what to fix.

RewrittenKeepUndo

Casual tone

Their own code

POST /api/v1/detect

{
  "aiScore": 0.12,
  "verdict": "human",
  "passages": [
    { "start": 0, "end": 412, "aiScore": 0.08 },
    { "start": 413, "end": 790, "aiScore": 0.17 }
  ]
}

Same engine and credits as the app

A draft that almost sounds like someone.

Find the passages that read as AI, then rewrite them

Qualifical is an AI detector and humanizer for essays, theses, cover letters, and posts. Paste your text or import a .docx, .pdf, or .txt file. The check gives every passage its own score, so you can see which parts give a draft away. Rewrite those parts in place, keep the versions you like, and check again.

0 / 300 words

0%likely AI, mostly human

How the check works

Your text is split into passages of about a paragraph, and each gets a score from 0 to 100% for how likely it reads as written by AI. Under 30% reads as human, 30 to 70% is mixed, and over 70% is likely AI. Longer passages count for more in the overall score. When you check again after editing, only the passages you changed are scored and charged.

How rewriting works

Pick a tone (academic, professional, casual, or creative) and how far a rewrite may move from your words. You can rewrite every passage at 30% or more in one go, or select a few sentences and rewrite just those. A rewrite stays marked in the text until you keep it, undo it, or ask for another version.

What it costs

Checking costs 1 credit a word and rewriting costs 7. The free plan gives 5,000 credits a month, up to 2,500 a day. Plans start at $3.99 a month for 30,000 credits, and credit packs from $4.99 last 365 days. See pricing

Common questions

Is Qualifical free?: Yes. Every account gets 5,000 credits a month, enough to check about 5,000 words, and you can use up to 2,500 of them a day. Free documents can be up to 2,500 words long.
Can I try the AI detector without an account?: Yes. On the home page you can check up to 300 words without signing in, and see which passages read as AI. Rewriting, longer texts, and file imports take a free account.
Can an AI detector prove that a text was written by AI?: No. A score says how likely a passage is to read as AI-generated, and it can’t tell who wrote it. Formulaic human writing can score high, and edited AI text can score low. The scores are good for deciding what to revise, but they aren’t evidence against anyone.
Do rewrites keep my meaning?: Usually, but a rewrite can shift the emphasis or drop a detail, which is why each one waits in the text for you to review. Undo brings back your own words.
What happens to my writing?: On the free plan, we keep what you write for up to two years to train and improve our models, with obvious personal details removed, and you can object at any time. If you have a plan or bought credits, your writing is never used for training. You can delete a document or your whole account yourself at any time.
Which files can I import and export?: Paste text, or import a .docx, .pdf, or .txt file. Documents export as .docx, and a document you imported from .docx keeps its original formatting for 12 months.
Is there an API or an MCP server?: Both. The REST API lets your own code check and rewrite text, and the MCP server lets assistants such as Claude, ChatGPT, Claude Code, and Cursor do it for you once you connect them to your account. They use the same credits as the app. The docs are at qualifical.com/docs/api and qualifical.com/docs/mcp.

Analytics

Optional Google Analytics and Google Ads cookies measure site use, purchases and ad performance. Your writing and email are never included.

Change anytime in our Privacy policy. See also our Terms.