# GPTZero vs OPIC GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. OPIC records 1,317 monthly visits with -61.6% growth and Free Trial pricing. | Metric | [GPTZero](https://openaitools.app/tool/gptzero-me) | [OPIC](https://openaitools.app/tool/opic) | | :--- | :--- | :--- | | Website URL | https://gptzero.me | https://opic.ai | | Categories | AI Detector, AI Checker, AI Content Detector, AI Plagiarism Checker | AI Photography, AI Face Recognition, AI Image Recognition, AI Social Media | | Pricing Model | Freemium, Paid | Free Trial | | Monthly Visits | 23,246,989 | 1,317 | | MoM Growth Rate | +32.5% | -61.6% | | Primary Market | United States | Türkiye | | Direct Visits | 7,529,349 | 543 | | Review Score | 4.1 | 4 | | Saved Count | 41 | 0 | | Supported Platforms | Website | Website | ## GPTZero GPTZero grew out of the practical problem that teachers and editors faced once generative text became common: how do you tell whether a piece of writing came from a person or a model? The product answers that with a detector that returns an overall AI likelihood score and highlights individual sentences it considers machine-written, so a reader can see where the suspicion comes from rather than just receiving a single verdict. Over time the platform widened from a single text box into a suite aimed at institutions. Detector results are paired with a plagiarism checker, grammar and writing feedback, and optional process verification such as a writing replay that records how a document was typed. A Chrome extension and Google Docs add-on push detection into the tools students and staff already use, and the company offers classroom integrations plus an API for bulk or programmatic checks. Because the buyers are largely schools, districts, and universities, GPTZero leans heavily on privacy and compliance claims: it states SOC 2 Type II compliance and alignment with FERPA, GDPR, and CCPA, and says student writing is not used to train models. The practical takeaway is that it is positioned as an academic-integrity and editorial-review tool rather than a novelty checker, which also means its more powerful features sit in paid tiers. **Pricing & Plans:** Freemium plus paid plans. A free tier provides core detection with character limits per scan, while paid individual and institutional plans unlock advanced scan modes, higher limits, writing reports, and classroom integrations. Enterprise and API access are quoted separately. - **Sentence-level AI detection:** Paste text or upload a document and get an overall AI probability score plus a sentence-by-sentence breakdown of which parts look machine-written. - **Multi-model coverage:** Flags AI text from major model families including ChatGPT, Gemini, Claude, Llama, and others, rather than training for a single model. - **Browser and docs extensions:** A Chrome extension and Google Docs add-on bring scanning into Gmail, Docs, Classroom, and other surfaces you already work in. - **Plagiarism checking:** Checks content for copied passages from outside sources so you can separate AI-generation questions from originality questions. - **Writing process verification:** Writing replay and advanced reports offer evidence about how a document was produced, useful for academic integrity workflows. **Strengths:** Sentence-level highlighting shows why a passage was flagged instead of only giving a score; Covers text from many different AI model families, not just one chatbot; Integrations with Chrome, Google Docs, Canvas, and Google Classroom fit existing school workflows; Publishes concrete compliance claims (SOC 2 Type II, FERPA, GDPR, CCPA) that institutions can review **Limitations:** Detection is probabilistic and can flag polished human writing or miss lightly edited AI text; Free scans are capped by character count, and useful reporting features require payment; Lean heavily on a single score without human judgment can lead to unfair accusations [Profile (Markdown)](https://openaitools.app/tool/gptzero-me.md) ## OPIC OPIC solves a problem every event photographer knows well: hundreds or thousands of photos get taken, but most guests never find the ones that include them. Instead of scrolling through a shared album, each guest uploads a single selfie and OPIC's face recognition returns a personal gallery of every image they appear in. Because it runs in the browser, guests do not need to install an app — they scan a QR code or open an event link and are done in seconds. For hosts, the platform is more than a gallery. Events can be shared with branded QR themes, and access is governed by privacy levels such as Guest, Full Access, Photo Selection, and VIP, so a couple can limit certain images while still giving attendees easy access to the rest. Hosts also get analytics covering guest engagement, photo views, and downloads, along with visit tracking and notifications by WhatsApp and email. That combination suits professional photographers who want to offer a polished client experience without building their own delivery portal. OPIC is positioned for weddings and anniversaries, trips and adventures, parties, business meetups, graduations, family and group photos, and baby showers or birthdays. It advertises unlimited events and high-resolution uploads without size restrictions, and offers free storage to new accounts, making it a low-friction option for organisers who want guests to find photos themselves rather than request them. **Pricing & Plans:** A free option with included storage is advertised for new accounts, and larger plans are available. Check the site's pricing page for current tiers and limits. - **AI face recognition:** Guests upload a selfie and instantly receive every photo they appear in, no manual album browsing. - **Flexible privacy levels:** Set Guest, Full Access, Photo Selection, and VIP levels so each audience sees only what you intend. - **Branded QR sharing:** Share events with pre-built themes using QR codes, links, or direct social posts. - **Event analytics and alerts:** Track guest visits, photo views, and downloads, and receive alerts by WhatsApp and email. - **No size limit, unlimited events:** Upload high-resolution images without size caps and run as many events as you need. **Strengths:** Guests find their own photos via selfie, which removes the usual back-and-forth after an event; No app install needed — it works from a browser link or QR code; Granular privacy levels let hosts control access to sensitive images; Analytics and WhatsApp or email alerts give hosts visibility into engagement [Profile (Markdown)](https://openaitools.app/tool/opic.md) ## Frequently Asked Questions ### How do GPTZero and OPIC compare in monthly traffic? GPTZero has 23,246,989 monthly visits, while OPIC has 1,317. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? GPTZero has a month-over-month growth rate of +32.5%; OPIC has -61.6%. ### How does pricing compare? GPTZero: Freemium, Paid. Freemium plus paid plans. A free tier provides core detection with character limits per scan, while paid individual and institutional plans unlock advanced scan modes, higher limits, writing reports, and classroom integrations. Enterprise and API access are quoted separately. OPIC: Free Trial. A free option with included storage is advertised for new accounts, and larger plans are available. Check the site's pricing page for current tiers and limits. ## 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 | Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features. | [.md](https://openaitools.app/tool/zerogpt.md) | | 2 | [Scribbr](https://openaitools.app/tool/scribbr) | 7,530,803 | +14.6% | Freemium | Combines AI detection with professional human proofreading and citation tools, but functions primarily as an editing service. | [.md](https://openaitools.app/tool/scribbr.md) | | 3 | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | +17.5% | Freemium | Combines AI detection with robust text humanization tools, but focuses more heavily on rewriting than pure verification. | [.md](https://openaitools.app/tool/undetectable-ai.md) | | 4 | [Copyleaks](https://openaitools.app/tool/copyleaks) | 2,402,494 | -14.1% | Paid, Contact for Pricing | Provides robust enterprise-grade content integrity and cross-media detection, but can be more expensive for individual users. | [.md](https://openaitools.app/tool/copyleaks.md) | | 5 | [Originality.ai](https://openaitools.app/tool/originality) | 2,049,639 | +2.8% | Paid | Delivers strong fact-checking and comprehensive site-wide plagiarism audits, but has stricter paywalls than GPTZero. | [.md](https://openaitools.app/tool/originality.md) | | 6 | [Isgen AI Detector](https://openaitools.app/tool/isgen-ai) | 901,917 | +5.8% | Freemium | Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition. | [.md](https://openaitools.app/tool/isgen-ai.md) | | 7 | [Winston AI](https://openaitools.app/tool/winston-ai) | 604,454 | +5.4% | Freemium, Free Trial | Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero. | [.md](https://openaitools.app/tool/winston-ai.md) | | 8 | [Aftershoot](https://openaitools.app/tool/aftershoot-com) | 588,838 | +13.2% | Free Trial, Paid | AI culling, editing and retouching that gives photographers their time back | [.md](https://openaitools.app/tool/aftershoot-com.md) | | 9 | [Detecting-AI.com](https://openaitools.app/tool/detecting-ai-com) | 505,146 | +493% | Freemium, Paid | AI detector that highlights evidence, not just a score | [.md](https://openaitools.app/tool/detecting-ai-com.md) | | 10 | [PlagiarismCheck.org](https://openaitools.app/tool/plagiarismcheck-org) | 368,384 | +6.1% | Paid | Tailors detection specifically for academic institutions and LMS integrations, but is less optimized for casual web users. | [.md](https://openaitools.app/tool/plagiarismcheck-org.md) | --- Source: https://openaitools.app/compare/gptzero-me-vs-opic More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)