# Copyleaks vs ProofUp

Copyleaks records 2,402,494 monthly visits with -14.1% month-over-month growth and Paid, Contact for Pricing pricing. ProofUp records 0 monthly visits with -100% growth and Contact for Pricing pricing.

| Metric | [Copyleaks](https://openaitools.app/tool/copyleaks) | [ProofUp](https://openaitools.app/tool/proofup) |
| :--- | :--- | :--- |
| Website URL | https://copyleaks.com | https://www.proofup.com |
| Categories | AI Content Detector, AI Detector, AI Writing Assistants, Large Language Models (LLMs) | AI Detector, AI Real Estate, AI Face Recognition, AI PDF |
| Pricing Model | Paid, Contact for Pricing | Contact for Pricing |
| Monthly Visits | 2,402,494 | 0 |
| MoM Growth Rate | -14.1% | -100% |
| Primary Market | United States | Global |
| Direct Visits | 758,498 | 0 |
| Review Score | 4.4 | 4 |
| Saved Count | 8 | 1 |
| Supported Platforms | Website | Website |

## Copyleaks

Copyleaks has focused on content integrity since 2015, starting with plagiarism detection and expanding into AI detection and governance as generative models spread. Its core AI Detector analyzes text across more than 30 languages and can identify output from leading models such as ChatGPT, Gemini, Claude and DeepSeek, while its Plagiarism Checker searches a database covering 60 trillion websites, 16,000+ open-access journals and millions of internal documents to catch copying, paraphrasing and character manipulation. A unified multi-modal layer adds detection for video, audio and images, aiming to replace fragmented single-purpose tools.

For organizations, Copyleaks goes beyond individual checks with a scalable API that plugs content analysis into existing workflows, LMS platforms and publishing pipelines. Its compliance and governance use cases map to academic integrity, generative AI governance, code governance, IP and copyright protection, and detection of unauthorized LLM usage. Reporting dashboards, integrations and role-based controls help teams act on results at scale.

Founded as a plagiarism tool, Copyleaks now serves both individuals and large institutions. Free web tools give students and writers quick access to the AI Detector and Plagiarism Checker, while paid enterprise plans provide higher volumes, richer reporting and dedicated support. The company reports 100+ countries, 500+ enterprise and education customers and tens of millions of monthly scans.

**Pricing & Plans:** Paid, Contact for Pricing

- **AI content detection:** Identifies AI-generated text across 30+ languages and leading LLMs, with reported accuracy above 99% on internal English test sets.
- **Plagiarism checking:** Searches 60 trillion websites, 16,000+ open-access journals and internal repositories to catch paraphrasing and hidden copying.
- **Multi-modal detection:** Extends detection to AI-generated video, audio and images so teams can verify content beyond text alone.
- **API and integrations:** A scalable API and workflow integrations automate content analysis inside LMS platforms, publishing tools and enterprise systems.
- **Governance and compliance:** Supports academic integrity, GenAI governance, code governance and IP protection programs with reporting and controls.

**Strengths:** Combines AI detection and plagiarism checking in one platform; Broad language coverage and a very large comparison database; Scalable API and workflow integrations for enterprises; Free tools available for individuals alongside paid plans

**Limitations:** Pricing is quote-based and aimed mainly at organizations; AI-detection results can produce false positives on human writing; Full feature set requires an enterprise contract

[Profile (Markdown)](https://openaitools.app/tool/copyleaks.md)

## ProofUp

ProofUp is a tenant screening platform built for multifamily property operators who need to confirm that an applicant can actually pay the rent. Instead of trusting whatever pay stub gets uploaded, it verifies income directly: applicants connect their bank and payroll accounts through Plaid, and earnings are read from the account rather than from a document. For those who upload instead, AI reads deposit frequency and actual earnings, which extends coverage to gig workers and guarantors.

The second layer is identity. A government-issued ID is photographed front and back, a live selfie is captured, and facial recognition confirms the two match — addressing the gap between the name on paper and the person who shows up. The third layer examines uploaded documents at the data level, checking file structure, metadata, and generator fingerprints for tampering that looks clean to the eye.

Everything converges into a single verdict per application — one of five, each carrying a risk level and the evidence behind it. Notably, the platform grades evidence quality: a direct bank connection differs from a source-downloaded PDF, which differs from a scan or phone photo. That distinction lets an approval team move fast while a review team still knows which applications deserve a sample. ProofUp positions itself against unverified approvals, which it says default far more often.

**Pricing & Plans:** Contact for pricing. ProofUp does not publish public tiers on its site; pricing is arranged through a demo request and depends on portfolio size and screening requirements.

- **Income verification from the source:** Applicants connect bank and payroll accounts through Plaid so earnings are read from the account itself, with no document in the path to forge. Uploaded documents are also analyzed for deposit frequency and real income.
- **ID plus live selfie matching:** A government ID photographed front and back is matched against a live selfie using facial recognition, catching borrowed identities before keys are handed over.
- **Document forgery detection:** Uploaded PDFs are read at the byte level for hidden text layers, metadata mismatches, generator fingerprints, and post-generation edits — evidence that visual inspection misses.
- **Five graded verdicts with reasons:** Each application returns one of five verdicts (pass, pass with caution, non-recurring, needs review, fail) with a risk level and the specific signals that produced it.
- **Auditable decision trail:** Reports record verification method, document source, per-attempt history, and plain-language flag explanations, so decisions are defensible and reviewable.

**Strengths:** Income is verified from the account via Plaid, so there is no forgeable document in the strongest path; Combines income, identity, and document-fraud checks in a single 2-3 minute flow; Five graded verdicts with explicit reasons and risk levels beat a simple pass/fail; Evidence-quality grading separates source-downloaded PDFs from scans and photos

**Limitations:** No public pricing — you must book a demo to get numbers; Strongest results depend on applicants connecting bank and payroll accounts, which some may resist; Document-level fraud analysis only applies to applicants who upload files rather than connect accounts

[Profile (Markdown)](https://openaitools.app/tool/proofup.md)

## Frequently Asked Questions

### How do Copyleaks and ProofUp compare in monthly traffic?

Copyleaks has 2,402,494 monthly visits, while ProofUp has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Copyleaks has a month-over-month growth rate of -14.1%; ProofUp has -100%.

### How does pricing compare?

Copyleaks: Paid, Contact for Pricing. Paid, Contact for Pricing ProofUp: Contact for Pricing. Contact for pricing. ProofUp does not publish public tiers on its site; pricing is arranged through a demo request and depends on portfolio size and screening requirements.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | +19.7% | Freemium, Paid | Widely used for quick AI text detection, but less comprehensive for enterprise plagiarism and code auditing. | [.md](https://openaitools.app/tool/zerogpt.md) |
| 2 | [GPTZero](https://openaitools.app/tool/gptzero-me) | 23,246,989 | +32.5% | Freemium, Paid | AI detection and writing verification built for schools and editors | [.md](https://openaitools.app/tool/gptzero-me.md) |
| 3 | [Scribbr](https://openaitools.app/tool/scribbr) | 7,530,803 | +14.6% | Freemium | Includes expert human proofreading alongside plagiarism checks, but lacks native automated AI content detection. | [.md](https://openaitools.app/tool/scribbr.md) |
| 4 | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | +17.5% | Freemium | Detect, humanize and verify AI content in one place | [.md](https://openaitools.app/tool/undetectable-ai.md) |
| 5 | [Originality.ai](https://openaitools.app/tool/originality) | 2,049,639 | +2.8% | Paid | Offers robust combined AI detection and plagiarism checking, but lacks Copyleaks' extensive enterprise API ecosystem. | [.md](https://openaitools.app/tool/originality.md) |
| 6 | [Isgen AI Detector](https://openaitools.app/tool/isgen-ai) | 901,917 | +5.8% | Freemium | Features detailed sentence-level analysis for multilingual text, but lacks Copyleaks' broad enterprise feature set. | [.md](https://openaitools.app/tool/isgen-ai.md) |
| 7 | [Winston AI](https://openaitools.app/tool/winston-ai) | 604,454 | +5.4% | Freemium, Free Trial | Detect AI-generated text and images with benchmark-tested accuracy | [.md](https://openaitools.app/tool/winston-ai.md) |
| 8 | [PlagiarismCheck.org](https://openaitools.app/tool/plagiarismcheck-org) | 368,384 | +6.1% | Paid | Accuracy-first plagiarism and AI detection for schools, universities, and teams | [.md](https://openaitools.app/tool/plagiarismcheck-org.md) |
| 9 | [Quetext](https://openaitools.app/tool/quetext-com) | 280,056 | +14.1% | Freemium | Check plagiarism, detect AI text and polish your writing in one place | [.md](https://openaitools.app/tool/quetext-com.md) |
| 10 | [IDScan.net](https://openaitools.app/tool/idscan-net) | 69,475 | -43.9% | Contact for Pricing | AI-powered ID scanning, authentication and identity proofing | [.md](https://openaitools.app/tool/idscan-net.md) |

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Source: https://openaitools.app/compare/copyleaks-vs-proofup

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