Select AI 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.
Highlight text on any page and ask an AI about it — with your own API key.
AI sidebar and browser agent for reading, writing and research
| Dimension / Metric | | |
|---|---|---|
| Official Domain | chromewebstore.google.com | sider.ai |
| Pricing Model | Free | Freemium |
| Monthly Visits | 0 (0) | 2.64M (2,644,740) |
| MoM Traffic Delta | 0 (—) | -314.2K (-10.6%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 0 | 1.7M |
| User Rating | 3.8 | 4.5 |
| Supported Platforms | Browser Extension | Website |
Highlight text on any page and ask an AI about it — with your own API key.
Highlight any passage, open the right-click context menu, and choose Select AI to start an instant conversation about that text without leaving the page.
Connect your own API key so requests go straight to the provider you choose, with no middleman and no mandatory account with the developer.
Ask and receive answers in multiple languages such as English, Spanish, Mandarin, French, and Hindi, instead of being locked into English.
When you select more passages on the same page, the earlier exchanges stay in context, so follow-up questions build on what you already discussed.
AI sidebar and browser agent for reading, writing and research
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 long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
One app to chat with GPT, Claude, Gemini and hundreds of other AI models
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
One privacy-first AI client for GPT, Claude, Gemini and more
One privacy-first AI client for GPT, Claude, Gemini and more
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.
Compare GPT, Claude, and Gemini answers side by side in one chat
Compare GPT, Claude, and Gemini answers side by side in one chat
A private Chromium browser with a built-in AI agent and offline LLM
A private Chromium browser with a built-in AI agent and offline LLM
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
