
Offers deeper conversational reasoning and coding agents, but lacks Perplexity's dedicated inline citation-first search layout.
#1Annotation Chrome Plugin records 0 monthly visits with — month-over-month growth and Free pricing. Perplexity records 88,310,223 monthly visits with -3.7% growth and Freemium pricing.
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chromewebstore.google.com | perplexity.ai |
| Pricing Model | Free | Freemium |
| Monthly Visits | 0 (0) | 88.31M (88,310,223) |
| MoM Traffic Delta | 0 (—) | -3.39M (-3.7%) |
|---|
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (25.5%) |
|---|
| Direct Visits / mo | 0 | 63.32M |
|---|
| User Rating | 4.2 | 4.7 |
|---|
| Supported Platforms | Browser Extension | Website |
|---|

Add and validate AI-predicted annotations inside Lexis360 and Sesame documents
Add your own annotations to the document currently open in the browser, without leaving the host application.
Contacts internal SIE web services to fetch annotations produced by a prediction AI component for the document you are viewing.
Review and validate returned annotations so that human judgement is applied before labels are accepted.
Designed specifically to help classify and categorise documents in editorial and legal content workflows.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
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.
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.
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.
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.

Offers deeper conversational reasoning and coding agents, but lacks Perplexity's dedicated inline citation-first search layout.
#1
Leverages Google's vast search index for real-time answers, but offers a standard chat interface rather than deep research feeds.
#2Provides exceptional analytical depth and writing quality, but does not focus purely on web-sourced search summaries.

Integrates real-time social data search for breaking news, but leans more toward casual chat than structured research.

Delivers agentic multi-source research and page generation, but can feel more cluttered than Perplexity's clean answer engine.

SpecialistOffers a comprehensive free index of academic literature, but lacks conversational chat synthesis for general web queries.


SpecialistFocuses exclusively on peer-reviewed scientific papers for evidence-based answers, unlike Perplexity's broad general web search.


AI grammar, spelling and style checker for 30+ languages

Combines privacy-focused web search with AI summarization, though it requires a paid subscription for full access.
SpecialistAnalyzes scholarly article citations to verify scientific claims, making it superior for academic literature reviews.
Generates structured, cited answers from live web queries, though with less polished UI and advanced model options.
One browser agent that combines every major AI model with web automation
Offers deeper conversational reasoning and coding agents, but lacks Perplexity's dedicated inline citation-first search layout.
Leverages Google's vast search index for real-time answers, but offers a standard chat interface rather than deep research feeds.
Provides exceptional analytical depth and writing quality, but does not focus purely on web-sourced search summaries.
Integrates real-time social data search for breaking news, but leans more toward casual chat than structured research.
Delivers agentic multi-source research and page generation, but can feel more cluttered than Perplexity's clean answer engine.
SpecialistOffers a comprehensive free index of academic literature, but lacks conversational chat synthesis for general web queries.
SpecialistFocuses exclusively on peer-reviewed scientific papers for evidence-based answers, unlike Perplexity's broad general web search.
AI grammar, spelling and style checker for 30+ languages
Combines privacy-focused web search with AI summarization, though it requires a paid subscription for full access.
SpecialistAnalyzes scholarly article citations to verify scientific claims, making it superior for academic literature reviews.
Generates structured, cited answers from live web queries, though with less polished UI and advanced model options.