Directory

Compare Agents

Start Over4/5 selected
Grammarly62
GitHub Copilot70
Microsoft Copilot70
OpenAI Codex CLI70
Market62
Trust19
Trend44
Votes95%
380
Watch
800
Votes
70.0k
Views
Market70
Trust29
Trend61
Votes97%
7,100
Watch
14,200
Votes
1900.0k
Views
Market70
Trust29
Trend68
Votes96%
3,500
Watch
7,200
Votes
850.0k
Views
Market70
Trust24
Trend58
Votes98%
2,900
Watch
6,200
Votes
540.0k
Views

Side-by-Side Comparison

FeatureGrammarlyGitHub CopilotMicrosoft CopilotOpenAI Codex CLI
Verification
Reviewed
Reviewed
Reviewed
Reviewed
Pricingfreemiumpaidfreemiumusage based
Deploymentbrowser extensionbrowser extensionweb appapi
Review LevelReviewedReviewedReviewedReviewed
Ownershipunclaimedunclaimedunclaimedunclaimed
Market Score62707070
Trust Score19292924
Trend Score44616858
Watchers3807,1003,5002,900
Page Views700001900001850000540000
Upvotes80014,2007,2006,200
CountryUSUSUSUS
Founded2,0092,0212,0232,025
Agent Typeassistantcopilotcopilotagent
Model Stack
grammarly-llm
gpt-4o
gpt-5
claude-sonnet-4.6
gemini-2.5-pro
gpt-5
gpt-4o
gpt-5
gpt-5-codex
o3
Docs
Open Source
Demo
Websitegrammarly.comgithub.comcopilot.microsoft.comopenai.com

Score Factor Breakdown

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