Directory

Compare Agents

Start Over4/5 selected
Perplexity AI70
Grammarly62
GitHub Copilot70
OpenAI Codex CLI70
Market70
Trust29
Trend64
Votes98%
4,600
Watch
9,200
Votes
1200.0k
Views
Market62
Trust19
Trend63
Votes95%
380
Watch
800
Votes
70.0k
Views
Market70
Trust29
Trend68
Votes97%
7,100
Watch
14,200
Votes
1900.0k
Views
Market70
Trust24
Trend50
Votes98%
2,900
Watch
6,200
Votes
540.0k
Views

Side-by-Side Comparison

FeaturePerplexity AIGrammarlyGitHub CopilotOpenAI Codex CLI
Verification
Reviewed
Reviewed
Reviewed
Reviewed
Pricingfreemiumfreemiumpaidusage based
Deploymentweb appbrowser extensionbrowser extensionapi
Review LevelReviewedReviewedReviewedReviewed
Ownershipunclaimedunclaimedunclaimedunclaimed
Market Score70627070
Trust Score29192924
Trend Score64636850
Watchers4,6003807,1002,900
Page Views1200000700001900001540000
Upvotes9,20080014,2006,200
CountryUSUSUSUS
Founded2,0222,0092,0212,025
Agent Typeassistantassistantcopilotagent
Model Stack
sonar-pro
sonar-huge
gpt-5
grammarly-llm
gpt-4o
gpt-5
claude-sonnet-4.6
gemini-2.5-pro
gpt-5
gpt-5-codex
o3
Docs
Open Source
Demo
Websiteperplexity.aigrammarly.comgithub.comopenai.com

Score Factor Breakdown

Factor (weight)Perplexity AIGrammarlyGitHub CopilotOpenAI Codex CLI
Trust Score (25%)
29%
19%
29%
24%
Watchers (20%)
100%
76%
100%
100%
Net Votes (20%)
100%
100%
100%
100%
Page Views (15%)
100%
100%
100%
100%
Verification (10%)
25%
13%
25%
13%
Completeness (10%)
55%
55%
55%
80%