OpenAI Codex vs GitHub Copilot vs Functionize vs GitHub Copilot CLI

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
Functionize
Competitor 3
GitHub Copilot CLI
Compare
4 tools · best value per row highlighted
Your tool OpenAI Codex
openai.com
A dedicated coding agent that writes and runs code for you
Remove
Competitor GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
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
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
Traffic estimated monthly website traffic
Monthly visits
204.3Mvisits/mo
637.9Mvisits/mo
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MoM change
▲ 3.6%
▲ 3.7%
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6-month growth
+0.3%
+19.3%
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Global rank web
#212
#49
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Avg. last 3 months
197.3M
629.7M
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Bounce rate lower is better
58%
36%
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Pages / visit
3.0
5.9
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Visit duration
2m 31s
6m 26s
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Traffic sources
● Direct 81% · ● Referral 17%
● Direct 83% · ● Referral 15%
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OpenAI CodexGitHub CopilotFunctionizeGitHub Copilot CLI
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
Freemium
Free
Starting price
$20per month · free tier available
$4per month · free tier available
$20per month · free tier available
Free
Free tier
Free trial
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API access
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Plans
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Free FreeTeam $4/moEnterprise $21/mo
Free FreeGrowth $20/moScale $100/moEnterprise Custom
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Capabilities input → output
Input
CodeText
CodeText
TextWeb pages
CodeText
Output
Code
Code
Data
Code
Skill level
Advanced
Intermediate
Advanced
Intermediate
Categories
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Development & CodeAI Testing
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
9
9
7
5
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
▲ 1
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
2
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.