# GPTZero vs Side Reader

GPTZero registra 23.246.989 visitas mensuales con un crecimiento intermensual de +32,5 % y un modelo de precios Freemium, De pago. Side Reader registra 355 visitas mensuales con un crecimiento de -36,5 % y un modelo de precios Freemium.

| Métrica | [GPTZero](https://openaitools.app/es/tool/gptzero-me) | [Side Reader](https://openaitools.app/es/tool/side-reader) |
| :--- | :--- | :--- |
| URL del sitio web | https://gptzero.me | https://www.side-reader.com |
| Categorías | Detector de IA, Verificador con IA, Detector de contenido con IA, Detectores de plagio con IA | Herramientas PDF con IA, AI Reader, Chatbot con IA, Resumidor de PDF con IA |
| Modelo de precios | Freemium, De pago | Freemium |
| Visitas mensuales | 23.246.989 | 355 |
| Tasa de crecimiento intermensual | +32,5 % | -36,5 % |
| Mercado principal | Estados Unidos | Vietnam |
| Visitas directas | 7.529.349 | 149 |
| Puntuación de reseñas | 4,1 | 2,4 |
| Número de guardados | 41 | 0 |
| Plataformas compatibles | Sitio web | Sitio web |

## 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.

**Precios y planes:** 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.

**Fortalezas:** 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

**Limitaciones:** 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/es/tool/gptzero-me.md)

## Side Reader

Side Reader is a Chrome extension that opens PDFs in the sidebar of ChatGPT, Claude and DeepSeek so you can read and interact with them side by side: summarize, translate, explain or ask about any passage without leaving the chat.

**Precios y planes:** Freemium. The core Chrome extension is available to install, with a paid upgrade for extended usage; check the extension listing for current limits.

- **Read PDFs beside the chat:** PDFs render directly in the sidebar next to the chat, so your document and the AI conversation are visible at the same time.
- **Summarize, translate and explain:** Summarize a whole document, translate it, or have passages explained in simpler terms using the AI you are already signed into.
- **Custom action button prompts:** Built-in buttons cover the common actions, and you can edit their prompts to make the AI respond in the format and tone you need.
- **Screenshot questions for non-selectable content:** Ask about charts, scans or regions that cannot be selected by taking a screenshot question instead.
- **Local storage and a proper reader:** Files stay local in your browser and are not stored by Side Reader, and PDFs keep zoom, page navigation and width controls.

**Fortalezas:** Keeps the PDF and the AI conversation visible in the same window; Works with ChatGPT, Claude and DeepSeek rather than locking you into one model; Local-only file storage — documents are not kept on Side Reader servers; Customizable action prompts for repeatable workflows

**Limitaciones:** Requires an active ChatGPT, Claude or DeepSeek session to do the AI work; Chrome only — no Firefox, Safari or Edge-specific edition; Very new/small product, so the feature set is still evolving

[Profile (Markdown)](https://openaitools.app/es/tool/side-reader.md)

## Preguntas frecuentes

### ¿Cómo se comparan GPTZero y Side Reader en tráfico mensual?

GPTZero tiene 23.246.989 visitas mensuales, mientras que Side Reader tiene 355. Las estimaciones de tráfico describen el tamaño de la audiencia, no la calidad del producto.

### ¿Cómo se comparan sus tasas de crecimiento?

GPTZero tiene una tasa de crecimiento intermensual de +32,5 %; Side Reader tiene -36,5 %.

### ¿Cómo se comparan los precios?

GPTZero: Freemium, De 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. Side Reader: Freemium. Freemium. The core Chrome extension is available to install, with a paid upgrade for extended usage; check the extension listing for current limits.

## Alternativas

| # | Nombre de la herramienta | Visitas mensuales | Tasa de crecimiento intermensual | Modelo de precios | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ZeroGPT](https://openaitools.app/es/tool/zerogpt) | 32.864.541 | +19,7 % | Freemium, De pago | Ofrece detección de IA multilingüe y humanización de textos, pero carece de los informes de análisis profundo de GPTZero. | [.md](https://openaitools.app/es/tool/zerogpt.md) |
| 2 | [Scribbr](https://openaitools.app/es/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/es/tool/scribbr.md) |
| 3 | [SciSpace](https://openaitools.app/es/tool/scispace) | 4.464.111 | +8,6 % | Freemium | Plataforma de investigación con IA para leer, entender y escribir artículos científicos | [.md](https://openaitools.app/es/tool/scispace.md) |
| 4 | [Undetectable AI](https://openaitools.app/es/tool/undetectable-ai) | 3.113.403 | +17,5 % | Freemium | Combina la detección de IA con herramientas de humanización de texto robustas, pero se enfoca más en la reescritura que en la verificación pura. | [.md](https://openaitools.app/es/tool/undetectable-ai.md) |
| 5 | [PDFgear](https://openaitools.app/es/tool/pdfgear) | 2.845.280 | -3,4 % | Gratis | Un editor de PDF gratuito con IA para cualquier dispositivo | [.md](https://openaitools.app/es/tool/pdfgear.md) |
| 6 | [Sider](https://openaitools.app/es/tool/sider) | 2.644.740 | -10,6 % | Freemium | Barra lateral de IA y agente de navegador para leer, escribir e investigar | [.md](https://openaitools.app/es/tool/sider.md) |
| 7 | [Copyleaks](https://openaitools.app/es/tool/copyleaks) | 2.402.494 | -14,1 % | De pago, Precio a consultar | Ofrece integridad de contenido y detección cruzada de nivel empresarial robusta, pero puede ser más caro para usuarios individuales. | [.md](https://openaitools.app/es/tool/copyleaks.md) |
| 8 | [Immersive Translate](https://openaitools.app/es/tool/immersive-translate) | 2.392.414 | -9,4 % | Freemium, Prueba gratuita | Traducción bilingüe con IA para webs, documentos, vídeo e imágenes | [.md](https://openaitools.app/es/tool/immersive-translate.md) |
| 9 | [Originality.ai](https://openaitools.app/es/tool/originality) | 2.049.639 | +2,8 % | De pago | Ofrece una sólida verificación de datos y auditorías de plagio integrales en todo el sitio, but tiene muros de pago más estrictos que GPTZero. | [.md](https://openaitools.app/es/tool/originality.md) |
| 10 | [LightPDF](https://openaitools.app/es/tool/lightpdf-com) | 1.742.568 | -15,3 % | Freemium | Editor, conversor y lector de PDF con IA gratis en todos tus dispositivos | [.md](https://openaitools.app/es/tool/lightpdf-com.md) |

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Fuente: https://openaitools.app/es/compare/gptzero-me-vs-side-reader

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