GitHub Copilot vs OpenAI Codex vs GitHub Copilot CLI vs Functionize

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

Your tool
GitHub Copilot
vs
Competitor 1
OpenAI Codex
Competitor 2
GitHub Copilot CLI
Competitor 3
Functionize
Compare
4 tools · best value per row highlighted
Your tool GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
Remove
Competitor OpenAI Codex
openai.com
A dedicated coding agent that writes and runs code for you
Make main Remove
Competitor GitHub Copilot CLI
github.com
It reads, writes and runs code, works directly with your issues and pull requests, and carries a task from planning to merged code.
Make main Remove
Competitor Functionize
functionize.com
Functionize is an agentic quality platform whose Studio product builds, runs and maintains tests against your live application.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
637.9Mvisits/mo
204.3Mvisits/mo
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MoM change
▲ 3.7%
▲ 3.6%
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6-month growth
+19.3%
+0.3%
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Global rank web
#49
#212
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Avg. last 3 months
629.7M
197.3M
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Bounce rate lower is better
36%
58%
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Pages / visit
5.9
3.0
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Visit duration
6m 26s
2m 31s
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Traffic sources
● Direct 83% · ● Referral 15%
● Direct 81% · ● Referral 17%
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GitHub CopilotOpenAI CodexGitHub Copilot CLIFunctionize
0159.5M318.9M478.4M637.9MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MOpenAI 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 · 204.3M100M1BGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MOpenAI 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 · 204.3MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Free
Freemium
Starting price
$4per month · free tier available
$20per month · free tier available
Free
$20per month · free tier available
Free tier
Free trial
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API access
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Plans
Free FreeTeam $4/moEnterprise $21/mo
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Free FreeGrowth $20/moScale $100/moEnterprise Custom
Capabilities input → output
Input
CodeText
CodeText
CodeText
TextWeb pages
Output
Code
Code
Code
Data
Skill level
Intermediate
Advanced
Intermediate
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Development & CodeAI Testing
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
9
9
5
7
Agents
Coding
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GitHub pull requests
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Code reviews
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Debugging
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Terminal
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Code autocompletion
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Test automation
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Testing
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Coding in VS Code
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GitHub automation
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Test creation
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Test generation
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Vs code
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Agent management
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Code documentation
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Developer tools
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Development
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GitHub management
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Test cases
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Website testing
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
2
0
0
0
Verified listing
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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.