# GPTZero vs Validoe

GPTZero registra 23.246.989 visitas mensais com crescimento de +32,5% mês a mês e preços Freemium, Pago. Validoe registra 6.165 visitas mensais com crescimento de -31,3% e preços Pago.

| Métrica | [GPTZero](https://openaitools.app/pt/tool/gptzero-me) | [Validoe](https://openaitools.app/pt/tool/validoe) |
| :--- | :--- | :--- |
| URL do site | https://gptzero.me | https://validoe.com |
| Categorias | Detector de IA, Verificador com IA, Detector de Conteúdo com IA, Verificadores de plágio com IA | Verificador com IA, Detector de IA, Reconhecimento de Imagens com IA |
| Modelo de preços | Freemium, Pago | Pago |
| Visitas mensais | 23.246.989 | 6.165 |
| Taxa de crescimento mensal | +32,5% | -31,3% |
| Mercado principal | Estados Unidos | Estados Unidos |
| Visitas diretas | 7.529.349 | 2.454 |
| Nota de avaliação | 4,1 | 3,9 |
| Contagem de favoritos | 41 | 0 |
| Plataformas suportadas | Site | Site |

## GPTZero

GPTZero is an AI detection platform for identifying machine-generated text. It combines a text detector with a Chrome extension, a plagiarism checker, writing-process verification, and educator-focused classroom tools.

**Preços e planos:** 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.

**Pontos fortes:** 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

**Limitações:** 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/pt/tool/gptzero-me.md)

## Validoe

Validoe is an app that authenticates and pre-grades Pokemon cards, and reviews graded slabs and sealed product, by combining a global team of card specialists with AI assistance. You photograph the item, submit it for verification, and receive a report covering authenticity, grade potential and any signs of tampering - often within minutes.

**Preços e planos:** Validoe is a paid service with pricing tied to the item type and the turnaround speed you choose; the site publishes a dedicated pricing page. Because fees scale with turnaround and submission type, check that page for current rates rather than relying on an estimate.

- **Expert-backed authenticity verification:** Submit a card, slab, booster pack or sealed box for review by a global team of authenticators, supported by AI. You get an Authentic or Replica verdict with the evidence behind it, rather than a score alone.
- **Pre-grading for raw cards and packs:** For raw cards and unopened packs, Validoe assesses condition and grade potential before you commit to an official grading submission, helping you judge whether a card is worth the time and cost.
- **Re-grading for slabs:** Already-slabbed cards can be re-assessed to flag possible mislabeling and to surface grade or value potential you may have missed - useful when evaluating a slab on the secondary market.
- **Reports in as little as 10 minutes:** Capture card images in the app, submit for review, and choose a turnaround. Reports can be returned in as little as ten minutes, with watermarked images and written commentary from the authenticator.
- **Deep Pokemon set coverage:** Coverage starts with Pokemon across modern and vintage eras, including promo sets, Japanese-exclusive releases and anniversary collections, with additional TCG and sports card categories scheduled for future release.

**Pontos fortes:** Uses human specialists rather than AI alone, which matters for high-value authenticity calls; Covers the full chain from raw cards and packs to graded slabs and sealed boxes; Fast turnaround options, with reports possible in around ten minutes; Reports include images and written authenticator commentary, not just a verdict

**Limitações:** Turnaround and depth depend on the selected service level, so instant answers are not guaranteed; Currently focused on Pokemon cards; other TCGs and sports cards are still rolling out on a published schedule; You still need to photograph the card yourself, and poor photos will limit the usefulness of any report; It is an independent service - it does not replace or speak for the established grading companies

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

## Perguntas frequentes

### Como GPTZero e Validoe se comparam em tráfego mensal?

GPTZero tem 23.246.989 visitas mensais, enquanto Validoe tem 6.165. As estimativas de tráfego descrevem o tamanho da audiência, não a qualidade do produto.

### Como as taxas de crescimento se comparam?

GPTZero tem taxa de crescimento mês a mês de +32,5%; Validoe tem -31,3%.

### Como os preços se comparam?

GPTZero: Freemium, Pago. 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. Validoe: Pago. Validoe is a paid service with pricing tied to the item type and the turnaround speed you choose; the site publishes a dedicated pricing page. Because fees scale with turnaround and submission type, check that page for current rates rather than relying on an estimate.

## Alternativas

| # | Nome da ferramenta | Visitas mensais | Taxa de crescimento mensal | Modelo de preços | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ZeroGPT](https://openaitools.app/pt/tool/zerogpt) | 32.864.541 | +19,7% | Freemium, Pago | ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translat | [.md](https://openaitools.app/pt/tool/zerogpt.md) |
| 2 | [Scribbr](https://openaitools.app/pt/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/pt/tool/scribbr.md) |
| 3 | [Undetectable AI](https://openaitools.app/pt/tool/undetectable-ai) | 3.113.403 | +17,5% | Freemium | Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authentic | [.md](https://openaitools.app/pt/tool/undetectable-ai.md) |
| 4 | [Copyleaks](https://openaitools.app/pt/tool/copyleaks) | 2.402.494 | -14,1% | Pago, Preço sob consulta | Oferece integridade de conteúdo de nível empresarial e detecção cross-media robusta, mas pode ser mais caro para usuários individuais. | [.md](https://openaitools.app/pt/tool/copyleaks.md) |
| 5 | [Originality.ai](https://openaitools.app/pt/tool/originality) | 2.049.639 | +2,8% | Pago | Oferece forte verificação de fatos e auditorias de plágio abrangentes em todo o site, mas tem paywalls mais rígidos que o GPTZero. | [.md](https://openaitools.app/pt/tool/originality.md) |
| 6 | [Isgen AI Detector](https://openaitools.app/pt/tool/isgen-ai) | 901.917 | +5,8% | Freemium | Fornece análise detalhada no nível da frase para texto multilíngue, mas falta o reconhecimento de marca acadêmica amplo do GPTZero. | [.md](https://openaitools.app/pt/tool/isgen-ai.md) |
| 7 | [Winston AI](https://openaitools.app/pt/tool/winston-ai) | 604.454 | +5,4% | Freemium, Teste gratuito | Excelencia em escanear texto e imagens com alta precisão, mas oferece menos verificações gratuitas diárias que o GPTZero. | [.md](https://openaitools.app/pt/tool/winston-ai.md) |
| 8 | [Detecting-AI.com](https://openaitools.app/pt/tool/detecting-ai-com) | 505.146 | +493% | Freemium, Pago | Um detector de IA que mostra a evidência, não só a pontuação | [.md](https://openaitools.app/pt/tool/detecting-ai-com.md) |
| 9 | [PlagiarismCheck.org](https://openaitools.app/pt/tool/plagiarismcheck-org) | 368.384 | +6,1% | Pago | Tailors detection specifically for academic institutions and LMS integrations, but is less optimized for casual web users. | [.md](https://openaitools.app/pt/tool/plagiarismcheck-org.md) |
| 10 | [StealthGPT](https://openaitools.app/pt/tool/stealthgpt) | 290.918 | +14,2% | Pago | StealthGPT is a writing platform that humanizes AI-generated text, scores it with an AI detector, and adds tools like stealth writer, SEO optimization and a Chrome auto-typer for detection-resistant content. | [.md](https://openaitools.app/pt/tool/stealthgpt.md) |

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Fonte: https://openaitools.app/pt/compare/gptzero-me-vs-validoe

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