OpenAI Codex vs GitHub Copilot vs Glean

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
OpenAI Codex
vs
Competitor 1
GitHub Copilot
Competitor 2
Glean
Competitor 3
Suggested competitors for OpenAI Codex: Claude Code92% Cursor86% Jules85% CodeRabbit84% Qodo (Formerly Codium)82% Gemini CLI82% Google Antigravity80% Kilo Code80%
Compare
3 tools · best value per row highlighted
Your tool OpenAI Codex
openai.com
A dedicated coding agent that writes and runs code for you
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Competitor GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
Make main Remove
Competitor Glean
glean.com
Glean is an enterprise AI platform that connects to company apps and data to provide search, an AI assistant and agents.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
204.3Mvisits/mo
637.9Mvisits/mo
—
MoM change
▲ 3.6%
▲ 3.7%
—
6-month growth
+0.3%
+19.3%
—
Global rank web
#212
#49
—
Avg. last 3 months
197.3M
629.7M
—
Bounce rate lower is better
58%
36%
—
Pages / visit
3.0
5.9
—
Visit duration
2m 31s
6m 26s
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Traffic sources
● Direct 81% · ● Referral 17%
● Direct 83% · ● Referral 15%
—
OpenAI CodexGitHub CopilotGlean
0159.5M318.9M478.4M637.9MOpenAI Codex · 266.3MOpenAI Codex · 225MOpenAI Codex · 210.1MOpenAI Codex · 191.2MOpenAI Codex · 203.7MOpenAI Codex · 195.7MOpenAI Codex · 203.1MOpenAI Codex · 190.4MOpenAI Codex · 197.2MOpenAI Codex · 204.3MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9M100M1BOpenAI Codex · 266.3MOpenAI Codex · 225MOpenAI Codex · 210.1MOpenAI Codex · 191.2MOpenAI Codex · 203.7MOpenAI Codex · 195.7MOpenAI Codex · 203.1MOpenAI Codex · 190.4MOpenAI Codex · 197.2MOpenAI Codex · 204.3MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
—
Starting price
$20per month · free tier available
$4per month · free tier available
—
Free tier
–
Free trial
–
–
API access
–
–
Plans
—
Free FreeTeam $4/moEnterprise $21/mo
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Capabilities input → output
Input
CodeText
CodeText
DataDocumentsText
Output
Code
Code
Text
Skill level
Advanced
Intermediate
Intermediate
Categories
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Education & LearningProductivity & OfficeAI AgentAI Assistant+1 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
4
4
7
Coding
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Agents
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Agent management
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Code reviews
–
Agent creation
–
–
Knowledge
–
–
Code documentation
–
–
Development
–
–
Digital information management
–
–
Knowledge bases
–
–
Knowledge sourcing
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
2
0
Verified listing
–
–
–

Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.