# GPT Reader vs Sider

GPT Reader records 0 monthly visits with — month-over-month growth and Free pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

| Metric | [GPT Reader](https://openaitools.app/tool/gpt-reader) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/gpt-reader/baeeglojhbnidlbpkmniebknkipgdagm | https://sider.ai |
| Categories | AI Text-to-Speech, AI Reader, AI Speech Synthesis, AI Assistant | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Free | Freemium |
| Monthly Visits | 0 | 2,644,740 |
| MoM Growth Rate | — | -10.6% |
| Primary Market | Global | United States |
| Direct Visits | 0 | 1,699,535 |
| Review Score | 3.8 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Browser Extension | Website |

## GPT Reader

GPT Reader targets a simple but frequent problem: you find something worth reading on the web, but you would rather listen. Instead of copying text into a separate app, the extension overlays a reader onto the page you are already viewing. You supply your OpenAI API key once, pick a preferred voice, and from then on a right-click on any highlighted passage produces a small player at the top of the screen.
The player is deliberately minimal. It offers play, pause, and replay, plus a narration speed control, and it can be dismissed by clicking outside it or via a close button so it never blocks the page. The extension also follows your browser's light or dark theme, so the banner blends into whatever interface you are using.
Language coverage is a headline feature: GPT Reader advertises support for roughly 14 languages and dialects, including English, German, Spanish, French, Italian, Hindi, Bengali, Japanese, Korean, Portuguese, Russian, Vietnamese, and both Simplified and Traditional Chinese. That makes it useful for language learners and multilingual readers, not just people who want hands-free access to articles. Because it runs on your own key, usage costs stay with your OpenAI account rather than a subscription.

**Pricing & Plans:** The extension itself is free to install. You must supply your own OpenAI API key, and any text-to-speech usage is billed by OpenAI according to your account's pricing.

- **Read Aloud on selection:** Highlight any text on a page and use the right-click menu to start playback without leaving the page.
- **Bring your own OpenAI key:** You enter your personal OpenAI API key once, so there is no separate subscription and no shared quota.
- **In-page playback banner:** A slim top banner provides play, pause, replay, and speed controls and can be dismissed with one click.
- **Broad language support:** Covers around 14 languages and dialects, including English, Japanese, Korean, Hindi, Vietnamese, and both Simplified and Traditional Chinese.
- **Theme-aware and lightweight:** Matches your browser's light or dark mode and ships as a very small package with no data collection.

**Strengths:** Free extension with no subscription, aside from your own OpenAI usage; Works on virtually any website through a right-click selection; Wide language coverage useful for study and multilingual reading; Minimal, theme-aware interface that does not clutter the page

**Limitations:** Requires an OpenAI API key and a working OpenAI account; Playback quality and availability depend on OpenAI's TTS models and your quota; No offline speech engine, so it needs an internet connection

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

## Sider

Sider's premise is that you should not have to leave the page you are reading to use an AI assistant. Its sidebar overlays the browser, detects the content in view, and responds with chat, summaries, translations or explanations using frontier models from multiple providers. The result is a lightweight research and reading workflow: highlight a paragraph, ask for a simpler explanation, translate a PDF and keep the original in sight.

Recent versions push Sider beyond chat. Sider Hand is a browser agent that works across real websites and uses your logged-in sessions to carry out multi-step jobs such as comparing prices while shopping, filling forms, doing cross-site research or triaging a Gmail inbox. Sider Code goes the other way, letting you instruct changes to a website's appearance or behaviour in plain language and preserving the customisation for next time. A Create module generates images, videos, slides and documents from the same panel.

Pricing moves from a limited free tier to credit-based paid plans aimed at heavier users. Lower plans suit occasional chat, summarisation and translation, while higher tiers add a dedicated cloud computer that keeps the browser agent running around the clock and a larger monthly credit allowance. Sider ships as browser extensions for Chrome and Edge plus desktop and mobile apps for macOS, Windows, iOS and Android, and is used by a very large installed base.

**Pricing & Plans:** Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

- **AI sidebar on any page:** A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab.
- **Summarise and chat with documents:** Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
- **Translation and read-aloud:** Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
- **Sider Hand browser agent:** Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.
- **Sider Code page customisation:** Describe a change in plain words and have Sider restyle or simplify any website, remembering the modification for future visits.

**Strengths:** Works inside the browser you already use, with no context switching; Access to multiple frontier models from one subscription; Strong reading toolkit: PDF chat, YouTube summaries, translation and read-aloud; Increasingly capable agent features for multi-step browser tasks

**Limitations:** Useful credits run out quickly on the free and lower tiers; Model availability and quota rules change over time, so expectations must be checked per plan; Some agent and code features depend on a cloud machine and heavier plans

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

## Frequently Asked Questions

### How do GPT Reader and Sider compare in monthly traffic?

GPT Reader has 0 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

GPT Reader has a month-over-month growth rate of —; Sider has -10.6%.

### How does pricing compare?

GPT Reader: Free. The extension itself is free to install. You must supply your own OpenAI API key, and any text-to-speech usage is billed by OpenAI according to your account's pricing. Sider: Freemium. Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) |
| 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) |
| 3 | [Speechify](https://openaitools.app/tool/speechify) | 5,457,475 | +0.5% | Freemium | Text to speech and voice AI across every device | [.md](https://openaitools.app/tool/speechify.md) |
| 4 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools. | [.md](https://openaitools.app/tool/monica-ai.md) |
| 5 | [Luvvoice](https://openaitools.app/tool/luvvoice-free-text-to-speech) | 1,438,923 | -8.2% | Freemium | Free AI text to speech with 200+ voices in 70+ languages | [.md](https://openaitools.app/tool/luvvoice-free-text-to-speech.md) |
| 6 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features. | [.md](https://openaitools.app/tool/merlin-ai.md) |
| 7 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider. | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 8 | [Peech: Text to Speech Reader](https://openaitools.app/tool/peech-text-to-speech-reader) | 353,093 | -26% | Freemium | Listen to anything. Beautifully. | [.md](https://openaitools.app/tool/peech-text-to-speech-reader.md) |
| 9 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) |
| 10 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider. | [.md](https://openaitools.app/tool/kome-ai.md) |

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Source: https://openaitools.app/compare/gpt-reader-vs-sider

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