Originality.ai vs Copyleaks
Vignesh Sampath
Last updated on
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The short answer
Originality.ai and Copyleaks are both AI-content and plagiarism detectors, but they were built for different buyers. Originality.ai is the younger tool (founded November 2022), aimed squarely at content agencies, publishers, and SaaS content teams, with a bundled content-quality suite (grammar, readability, fact-checking) alongside detection and a slightly cheaper entry price. Copyleaks is the more established vendor (founded 2015), with roughly seven more years of operating history, native integration with eight learning management systems, plagiarism reading across 100+ languages, a separate code-detection product, and a stronger academic-integrity reputation. Both vendors publish internal accuracy claims near 99% that independent third-party benchmarks do not reproduce for either tool, which is a category-wide pattern rather than a flaw unique to one vendor.
If you run a content agency or publisher operation and want AI detection, plagiarism checking, grammar, readability, and fact checking in one tool, plus full-site scans and team-level scan history, Originality.ai is the tighter fit. Entry is $14.95/mo (Pro, monthly) or $12.95/mo (annual) for 2,000 credits/mo, with no free plan on the pricing page.
If you need native LMS integration (Brightspace/D2L, Canvas, Google Classroom, Moodle, Blackboard, Schoology, Edsby, Sakai), plagiarism reading across 100+ languages, AI detection across 30+ languages, or a longer operating track record, Copyleaks is the stronger pick. Entry is $16.99/mo (Personal, monthly) or $13.99/mo billed annually, per its own pricing page in July 2026.
At a glance
| Originality.ai | Copyleaks | |
|---|---|---|
| Founded / Vendor | Originality.ai (originality.ai), founded November 2022 | Copyleaks (copyleaks.com), founded 2015 |
| Category | AI-content + plagiarism detector, content-team focused | AI-content + plagiarism detector, broader academic/LMS focus |
| Starting price | $14.95/mo (Pro, monthly); $12.95/mo (Pro, annual) | $16.99/mo (Personal, monthly); $13.99/mo (Personal, annual) |
| Public rating | Capterra 5.0/5 (7 reviews, low volume); G2 reported 4.3-4.4/5 (108-185 reviews, unverified live) | Capterra 4.4/5 (91 reviews); G2 reported 4.5/5 AI detector (41) and 4.3/5 plagiarism checker (26), unverified live |
| Best for | Content agencies/publishers wanting one bundled QA suite | Education/LMS buyers and multilingual content teams |
Vendor profile
Originality.ai
Originality.ai was founded in November 2022 by Jon Gillham, who previously founded and sold a content marketing agency, alongside co-founder Conor Watt. The company is headquartered in Collingwood, Ontario, Canada. It was built content-team-first: AI Checker, Plagiarism Checker, Grammar and Spelling Checker, Fact Checking, Readability Checker, a Chrome extension, a Moodle plugin, full-site scans, and team management all live in one product, with API access on the Enterprise tier. Its pricing page lists every self-serve tier with exact monthly and annual numbers, including per-seat add-on costs. Precise headcount is not published: the About page does not state a total, but it names 20 team members across engineering, ML, product, content, and support, while third-party LinkedIn lookups show a smaller 2-10 band, so read it as a small team rather than a precise figure.
- Vendor
- Originality.ai (originality.ai)
- Founded
- November 2022 (Jon Gillham, Conor Watt)
- HQ
- Collingwood, Ontario, Canada
- Team size
- Not published as a total; About page names 20 team members (LinkedIn lookups show a smaller 2-10 band)
- Pricing model
- Credit-metered tiers (2,000 to 15,000 credits/mo); no free plan listed
- Starting price
- $14.95/mo (Pro, monthly); $12.95/mo (Pro, annual)
- Public rating
- Capterra 5.0/5 (7 reviews, low volume, verified); G2 reported 4.3-4.4/5 (108-185 reviews, G2 blocks automated checks, so re-check live)
Copyleaks
Copyleaks was founded in 2015 by Alon Yamin (CEO) and Yehonatan Bitton (CTO), software developers with a background in text analysis and machine learning, and its About page lists a New York HQ at 115 E 23rd St. Wikipedia reports $7.75M raised as of 2022. Copyleaks covers AI detection across current-generation model families in 30+ languages, plagiarism scanning it describes as reading over 100 languages, and a distinct product, Codeleaks, for AI-generated and plagiarized source code across 11 programming languages with license detection. Its LMS footprint (Brightspace/D2L, Canvas, Google Classroom, Moodle, Blackboard, Schoology, Edsby, Sakai) is substantially broader than Originality.ai’s single Moodle plugin. One verification caveat: copyleaks.com returns HTTP 403 to plain automated requests, so its pages were read through a text-extraction proxy in July 2026 rather than a direct fetch. Headcount is not disclosed anywhere first-party, and third-party trackers disagree sharply, so treat any team-size number as unverified.
- Vendor
- Copyleaks (copyleaks.com)
- Founded
- 2015 (Alon Yamin, Yehonatan Bitton)
- HQ
- New York, NY (115 E 23rd St., 7th Fl), per its own About page
- Team size
- Not disclosed first-party; third-party trackers range from ~20 (Tracxn) to a 51-200 band (LeadIQ), so unverified
- Pricing model
- Credit-metered tiers (1 credit = up to 250 words or 1 image); custom Education and Enterprise quotes
- Starting price
- $16.99/mo (Personal, monthly); $13.99/mo billed annually, 100 credits (~25,000 words)/mo
- Public rating
- Capterra 4.4/5 (91 reviews, verified); G2 reported 4.5/5 AI detector listing (41 reviews) and 4.3/5 plagiarism-checker listing (26 reviews), G2 blocks automated checks, so re-check live
Pricing: what you'll actually pay
Both vendors publish self-serve pricing, and the figures below were read from each vendor’s own pricing page in July 2026. The headline prices sit within $2 of each other, so the real gap is words per dollar. Originality.ai’s $14.95 Pro tier includes 2,000 credits at 100 words each (roughly 200,000 words of AI-only scanning), while Copyleaks’ $16.99 Personal tier includes 100 credits at up to 250 words each (roughly 25,000 words). Copyleaks closes some of that gap on teams, since its $99.99 Pro tier bundles 25 seats where Originality.ai charges per extra seat. One caveat: copyleaks.com blocks plain automated requests, so its page was read through a text-extraction proxy, and a manual browser check before you buy is still worth 30 seconds.
| Originality.ai | Copyleaks | |
|---|---|---|
| Starting price | $14.95/mo (Pro, monthly); $12.95/mo (Pro, annual) | $16.99/mo (Personal, monthly); $13.99/mo (Personal, annual) |
| Typical operating range | $14.95 to $179/mo (Pro to Enterprise, monthly) | $16.99 to $99.99/mo (Personal to Pro, monthly) |
| Top / enterprise tier | $179/mo monthly, $136.58/mo annual (15,000 credits/mo, 365-day scan history, dedicated success manager, API) | Pro at $99.99/mo monthly, $74.99/mo annual (1,000 credits, 25 seats); Education and Enterprise are custom-quoted |
| Free plan | None listed on the pricing page | None listed on the pricing page; homepage offers a free signup, so treat it as a trial |
| Extra seats | $8.62-9.95/mo (Pro); $19.04-24.95/mo (Enterprise) | Not listed separately; Pro bundles 25 seats |
| Usage model | Credit-metered: 1 credit = 100 words (AI-only); 2 credits/100 words (AI+plagiarism); subscription credits expire monthly, pay-as-you-go credits expire after 2 years | Credit-metered: 1 credit = up to 250 words or 1 image; 100 credits/mo on Personal, 1,000 on Pro; extra credits purchasable |
Capability comparison
Both tools cover the same core job: flag likely AI-generated text and catch plagiarism. The gaps show up in bundled content-QA tooling, LMS reach, language coverage, and site-wide scanning. Originality.ai wins on suite bundling, full-site scans, and a marginally cheaper entry tier; Copyleaks wins on LMS reach, language coverage, and a dedicated code-detection product.
| Service | Originality.ai | Copyleaks |
|---|---|---|
| AI-generated content detection | Yes (GPT, Claude, Gemini family models; exact version coverage shifts as models ship) | Yes (GPT, Claude, Gemini family models; same fast-moving caveat) |
| Plagiarism checking | Yes | Yes (describes reading over 100 languages) |
| Bundled grammar / readability / fact-check suite | Yes (Grammar, Readability, Fact Checking bundled in) | Partial (a Grammar Checker API is documented; grammar and readability are not bundled into the core self-serve detection plans per its own pages) |
| LMS integration | Partial (Moodle plugin only) | Yes (Brightspace/D2L, Canvas, Google Classroom, Moodle, Blackboard, Schoology, Edsby, Sakai) |
| Code plagiarism / AI-code detection | No | Yes (Codeleaks, distinct product, 11 programming languages, license detection) |
| Multi-language coverage | Not specifically broken out on marketing pages | Plagiarism described as reading 100+ languages; AI detection stated for 30+ languages |
| Browser extension | Yes (Chrome extension) | Yes (browser extension plus a Google Docs add-on) |
| Team management / tagging | Yes (team scan history and per-user attribution) | Partial (multi-seat plans, Pro includes 25 seats; per-user tagging not documented on its public pages) |
| API access | Partial (Enterprise tier only) | Yes (documented AI detector, plagiarism, grammar, and text-moderation APIs; API pricing not listed publicly) |
| Free tier | No free plan listed (credit-metered paid plans only) | No free plan listed on the pricing page; the homepage offers a free signup, so treat free access as a trial |
| Full-site scans | Yes | Not documented on its public pages |
| Independent accuracy (cited third-party tests) | 83.0% (GPTZero RAID benchmark) to 88% (EyeSift) | 77.5% (Supwriter) to 90.7% (GPTZero RAID benchmark) |
Decision matrix - who fits which side
| Criterion | Originality.ai | Copyleaks |
|---|---|---|
| Lower entry price and more words included per dollar | ✓ | ✕ |
| Bundled grammar/readability/fact-check suite | ✓ | ~ |
| Full-site scanning | ✓ | ✕ |
| Native multi-LMS integration | ✕ | ✓ |
| Plagiarism coverage across 100+ languages | ~ | ✓ |
| Dedicated code-detection product | ✕ | ✓ |
| Higher score in the one benchmark that tested both (GPTZero RAID) | ✕ | ✓ |
| Seats bundled into a self-serve tier | ✕ | ✓ |
| Attributed, named customer case study with quote | ✓ | ✓ |
| Higher Capterra review volume | ✕ | ✓ |
| Permanent free plan listed on pricing page | ✕ | ✕ |
| Longer operating track record (7+ years) | ✕ | ✓ |
| Reviewer sentiment specific to AI-detection accuracy | ✓ | ~ |
Check = clear edge. Tilde = capable but not the stronger pick, or unverified/mixed evidence. Cross = outside the model or not confirmed.
Strengths & tradeoffs
Both tools do the same core job of flagging likely AI-generated text and plagiarism, and each has real gaps the other doesn’t. A comparison that only shows one side winning isn’t an honest one, so the rows below keep both tools’ weaker spots in view.
| Axis | Originality.ai | Copyleaks |
|---|---|---|
| Company maturity | Founded November 2022, younger with a thinner track record | Founded 2015, roughly seven more years of operating history |
| Entry price and volume | $14.95/mo monthly ($12.95 annual) for about 200,000 words of AI-only scanning | $16.99/mo monthly ($13.99 annual) for about 25,000 words |
| Team seats | Billed per extra seat ($8.62 to $9.95/mo on Pro) | Pro tier bundles 25 seats at $99.99/mo monthly ($74.99 annual) |
| Third-party accuracy in the shared benchmark | 83.0% accuracy, 4.79% false positives (GPTZero RAID) | 90.7% accuracy, 5.26% false positives (GPTZero RAID) |
| Other single-tool benchmarks | 88% with 5.7% false positives (EyeSift) | 77.5% average detection (Supwriter); Leap AI ranks it behind Originality.ai on standard prose |
| LMS integration | Moodle plugin only | Brightspace/D2L, Canvas, Google Classroom, Moodle, Blackboard, Schoology, Edsby, Sakai |
| Language coverage | Not specifically broken out on marketing pages | Plagiarism described as reading 100+ languages; AI detection stated for 30+ |
| Content-QA bundling | Grammar, readability, and fact-checking bundled with detection | Grammar available as a separate API; not bundled into core self-serve detection plans |
| Full-site scanning | Yes, scans an entire domain | Not documented on its public pages |
| Code detection | Not offered | Codeleaks, a distinct product covering 11 programming languages with license detection |
| Free plan | None listed on the pricing page | None listed on the pricing page; homepage offers a free signup that behaves like a trial |
| Reviewer sentiment on AI-detection accuracy | Reads more positive in reviews surfaced here | Capterra reviewers explicitly flagged reliability and false-positive complaints |
| Named case study depth | Full attributed quote (BrandBuilders/Travis Norris) with workflow detail | Full attributed quote (Oakland University/Kate Huttenlocher) plus company-presented logos including Semrush, Medium, and Edmentum |
| Review volume (Capterra) | 7 reviews (5.0/5), a small sample | 91 reviews (4.4/5), a larger sample |
| Public-facts access | Pricing and about pages load for any automated check | Domain blocks plain automated requests; pages readable but harder to audit at scale |
Ratings & track record
| Metric | Originality.ai | Copyleaks |
|---|---|---|
| Capterra rating | 5.0 / 5 (7 reviews, verified July 2026) | 4.4 / 5 (91 reviews, verified July 2026) |
| G2 rating | Reported 4.3-4.4/5 (108-185 reviews); G2 blocks automated checks, so re-verify live | Reported 4.5/5 AI detector listing (41 reviews) and 4.3/5 plagiarism-checker listing (26 reviews); same caveat |
| Founded | November 2022 | 2015 |
| Funding | Not disclosed in sources reviewed | $7.75M reported raised as of 2022 (Wikipedia) |
| Notable signal | Attributed agency case study (BrandBuilders); more words included per dollar at entry | Longer track record; eight-platform LMS footprint; higher score in the one benchmark that tested both |
Originality.ai’s Capterra score looks stronger on paper (5.0 vs 4.4), but it rests on just 7 reviews against Copyleaks’ 91, so treat the gap as a small-sample effect rather than a settled verdict. G2 tells a messier story for both, and neither figure could be verified directly because G2 blocks automated requests: Originality.ai’s reported review count spans 108 to 185 depending on the snapshot, which is itself a signal of a young, low-volume, still-settling review category. Copyleaks splits across two separate G2 product listings (AI detector and plagiarism checker), each with a review count smaller than a unified listing would show. Neither vendor has the deep, stable review base of a legacy category leader yet. Both companies’ internally claimed accuracy figures (99%+, with Copyleaks also claiming a 0.03% false-positive rate) sit well above what independent third-party benchmarks report for either tool, a pattern that looks like a category-wide credibility gap rather than something specific to one vendor.
Both tools’ data is sourced from publicly available information as of July 2026, read from each vendor’s own pricing, product, and about pages plus Capterra, Wikipedia, and independent benchmark write-ups. Copyleaks’ domain blocks plain automated requests, so its pages were read through a text-extraction proxy and are worth a manual browser check before you rely on exact figures; G2 ratings for both vendors could not be verified directly for the same reason and are reported rather than confirmed. This comparison is independent; we take no affiliate or referral fees from either vendor.
Frequently asked questions
What is the difference between Originality.ai and Copyleaks?
Which is more accurate, Originality.ai or Copyleaks?
Which is cheaper, Originality.ai or Copyleaks?
Is Copyleaks better for schools and universities?
Does Originality.ai or Copyleaks have a free plan?
Which tool has more reviews and a clearer public track record?
Sources and references
- Originality.ai homepage (accessed July 2026)
- Originality.ai - About (founders, HQ) (accessed July 2026)
- Originality.ai - Pricing (accessed July 2026)
- Originality.ai - BrandBuilders case study (accessed July 2026)
- Originality.ai - Enterprise page (client/press logos) (accessed July 2026)
- Capterra: Originality.ai reviews (5.0/5, 7 reviews) (accessed July 2026)
- G2: Originality.ai reviews (reported 4.3-4.4/5, 108-185 reviews; G2 blocks automated verification) (accessed July 2026)
- GPTZero: RAID benchmark, Originality.ai 83.0% and Copyleaks 90.7% accuracy (accessed July 2026)
- EyeSift: Originality.ai review (88% accuracy, 5.7% false positives) (accessed July 2026)
- Copyleaks homepage (99% accuracy claim, customer logos; site blocks plain automated requests) (accessed July 2026)
- Copyleaks - About Us (founders, New York HQ address) (accessed July 2026)
- Copyleaks - Pricing (Personal $16.99/mo monthly, $13.99/mo annual; Pro $99.99/$74.99) (accessed July 2026)
- Copyleaks - LMS integrations (Brightspace, Canvas, Google Classroom, Moodle, Blackboard, Edsby, Sakai, Schoology; 100+ languages read) (accessed July 2026)
- Copyleaks - AI Content Detector (99%+ accuracy claim, 0.03% false-positive claim, 30+ languages) (accessed July 2026)
- Copyleaks - Codeleaks (AI-code and source-code plagiarism, 11 languages, license detection) (accessed July 2026)
- Copyleaks - Oakland University case study (attributed quote, Kate Huttenlocher) (accessed July 2026)
- Wikipedia: Copyleaks (founding year, founders, HQ, $7.75M funding) (accessed July 2026)
- Capterra: Copyleaks reviews (4.4/5, 91 reviews, incl. AI false-positive complaints) (accessed July 2026)
- G2: Copyleaks AI detector reviews (reported 4.5/5, 41 reviews; G2 blocks automated verification) (accessed July 2026)
- G2: Copyleaks Plagiarism Checker reviews (reported 4.3/5, 26 reviews; G2 blocks automated verification) (accessed July 2026)
- Supwriter: Copyleaks AI detection benchmark (77.5% average detection rate) (accessed July 2026)
- Leap AI: Copyleaks review (qualitative; places Copyleaks behind Originality.ai, Turnitin, Winston on standard prose) (accessed July 2026)
- Fritz AI: Copyleaks review (echoes vendor 99%+ long-text claim; ~85% on heavily edited AI text) (accessed July 2026)
- Browse AI Tools: Turnitin vs Copyleaks vs GPTZero guide (100+ language claim) (accessed July 2026)
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