Perplexity records 88,310,223 monthly visits with -3.7% month-over-month growth and Freemium pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Deep Research Autonomous Reports
Executes multi-step iterative web and document research across hundreds of sources, cross-checking facts and generating structured, citation-backed analytical reports that can be exported as PDFs or shared as interactive Perplexity Pages.
Multi-Model Routing & Model Council
Lets Pro and Max subscribers switch dynamically between Perplexity's in-house Sonar models and top external models (including Claude 4, o3-pro, and Gemini) or compare multi-model reasoning outputs side by side.
Perplexity Spaces & Hybrid RAG
Provides dedicated project workspaces where users upload local PDFs, spreadsheets, and text files, configure custom assistant instructions, and run queries that combine private document retrieval with live internet search.
Perplexity Computer & Comet Assistant
Extends Perplexity from passive Q&A into agentic execution, turning high-level user requests into completed workflows, multi-tab browser actions, and automated data synthesis via the Comet ecosystem.
Strengths & Pros
+Every generated statement links directly to numbered, verifiable web or document sources, drastically reducing ungrounded LLM hallucinations.
+Deep Research mode delivers comprehensive, multi-page synthesis reports at a fraction of the time required for manual desk research.
Frequently Asked Questions: Perplexity vs Sider
Perplexity has 88,310,223 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality.
+Broad model optionality lets subscribers use Sonar, Claude, OpenAI, and Gemini models under a single $20/month subscription.
+Focused search scopes (Academic, Finance, Web, Social) and Spaces allow clean separation between general browsing and domain-specific knowledge work.
Limitations
–The Free tier is tightly restricted to 3 Pro Searches per day and just 1 Deep Research query per month with no manual model selection.
–Power users requiring heavy agentic Computer runs or uncapped o3-pro/Opus-level research must jump from $20/month Pro to the steep $200/month Max tier.
–Synthesized summaries can still inherit inaccuracies if underlying top-ranked web sources contain outdated or biased reporting.
Sider
AI sidebar and browser agent for reading, writing and research
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.
Strengths & Pros
+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
