
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.

ExplainPaper records 26,016 monthly visits with -39.3% month-over-month growth and Freemium pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
Highlight dense research text and get plain-language explanations instantly
| Dimension / Metric | ||
|---|---|---|
| Official Domain | explainpaper.com | sider.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 26.02K (26,016) | 2.64M (2,644,740) |
| MoM Traffic Delta | -16.81K (-39.3%) |
| -314.2K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (28.1%) | 🇺🇸 United States (13.3%) |
|---|
| Direct Visits / mo | 9.69K | 1.7M |
|---|
| User Rating | 4 | 4.5 |
|---|
| Supported Platforms | Website | Website |
|---|
Highlight dense research text and get plain-language explanations instantly
Select any confusing sentence or term and receive an immediate plain-language explanation that accounts for the rest of the paper.
Shift the reading level from beginner-friendly to expert-detail so the explanation matches your background.
Ask questions and get answers grounded in the document's actual content, with references back to the relevant sections.
Produce a smart outline, key-point extraction, and concept relationship views without reading the entire paper first.
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.

SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.

A free, AI-powered academic search engine for 240M+ papers across every scientific field


Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.

AI research platform for reading, understanding and writing scientific papers
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Chat with any PDF, video, or website and get cited answers in seconds

Map the literature around the papers you love—free
Explore the academic literature as a visual graph of related papers
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.

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.
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.
A free, AI-powered academic search engine for 240M+ papers across every scientific field
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
AI research platform for reading, understanding and writing scientific papers
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Map the literature around the papers you love—free
Explore the academic literature as a visual graph of related papers
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.