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AI Essay Checker vs Originality.AI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. AI Essay Checker starts at $17, Originality.AI at $14.95. Only AI Essay Checker has a free tier. Only Originality.AI ships a public API.

AI Essay CheckerRuns an essay through AI detection, plagiarism checking, grammar fixes and a grade estimate.Originality.AIAI-text and plagiarism detection built for publishers and agencies

Side by side

FactAI Essay CheckerOriginality.AI
CategoryAI Detection & HumanizersAI Detection & Humanizers
Pricing modelFreemiumPaid
Starts at$17 month$14.95 month
Public APINoYes
PlatformsWebWeb, Chrome Ext, API
CompanyKamranAli LimitedOriginality.AI
Launched20242022
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

AI Essay Checker

Four checks that usually come from four vendors in one $17 subscription, with a free tier large enough to test on a real essay. Unlimited grammar checking at every tier is a genuine bonus. The contradiction is structural: the same account sells AI detection and an AI humaniser, so whatever the detector scores, the vendor also sells the way around it.

Pros

  • AI detection, plagiarism scan, grammar correction and essay grading in one account
  • Grammar checking is unlimited on every tier including free
  • Free tier gives 1,000 detector words a month without a card
  • Interface available in eight languages
  • Named UK legal entity, KamranAli Limited, in the terms of service

Cons

  • Sells an AI humaniser and rewriter alongside the AI detector
  • No API, LMS integration or bulk submission for teachers
  • Word quotas are split across four separate meters, which is easy to misjudge
  • No published detection accuracy figures or independent benchmarking

Originality.AI

The detector to pick if you are a publisher or agency policing freelance output at volume, because the team history and writing replay matter more than the raw score. Do not use it to accuse a student; no detector is accurate enough to carry that weight.

Pros

  • Credit model is legible: 100 words per credit, no hidden weighting
  • API on the higher tier makes batch pipelines possible
  • Chrome extension works inside Google Docs, where the writing actually happens
  • Writing replay from revision history is process evidence, not just a score

Cons

  • Monthly subscription credits expire, so a light month is wasted spend
  • The jump from $14.95 to $179 a month is a steep single step
  • False positives on heavily edited or non-native English writing are a documented hazard across every detector
  • Accuracy benchmarks are largely vendor-run

Which one fits

Choose AI Essay Checker if you need

  • Students checking an essay before submitting it
  • Content and SEO writers screening drafts for AI-flagged phrasing
  • Anyone wanting detection, plagiarism and grammar in one subscription

Choose Originality.AI if you need

  • Content agencies auditing freelance submissions before they pay for them
  • Publishers sweeping large archives for machine-written pages
  • SEO teams screening acquired, syndicated or outsourced content

More comparisons

All AI Essay Checker alternatives →Browse all AI Detection & Humanizers →