OpenAI Codex CLI vs OpenCode vs GitHub Copilot vs Kilo Code Reviewer

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
OpenCode
Competitor 2
GitHub Copilot
Competitor 3
Kilo Code Reviewer
Compare
4 tools · best value per row highlighted
Your tool OpenAI Codex CLI
developers.openai.com
OpenAI Codex CLI brings the Codex coding agent to the terminal and to scripts.
Remove
Competitor OpenCode
opencode.ai
OpenCode is an open-source AI coding agent that helps developers write code in the terminal, an IDE or a desktop app.
Make main Remove
Competitor GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
Make main Remove
Competitor Kilo Code Reviewer
kilo.ai
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
—
637.9Mvisits/mo
1Mvisits/mo
MoM change
—
—
▲ 3.7%
▼ 17.7%
6-month growth
—
—
+19.3%
-45.8%
Global rank web
—
—
#49
#41,702
Avg. last 3 months
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—
629.7M
1.3M
Bounce rate lower is better
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—
36%
41%
Pages / visit
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—
5.9
3.3
Visit duration
—
—
6m 26s
2m 00s
Traffic sources
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—
● Direct 83% · ● Referral 15%
● Direct 85% · ● Referral 13%
OpenAI Codex CLIOpenCodeGitHub CopilotKilo Code Reviewer
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 · 637.9MKilo Code Reviewer · 144.8KKilo Code Reviewer · 830KKilo Code Reviewer · 1.1MKilo Code Reviewer · 1.9MKilo Code Reviewer · 1.9MKilo Code Reviewer · 1.7MKilo Code Reviewer · 1.4MKilo Code Reviewer · 1.7MKilo Code Reviewer · 1.3MKilo Code Reviewer · 1M100K1M10M100M1BGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MKilo Code Reviewer · 144.8KKilo Code Reviewer · 830KKilo Code Reviewer · 1.1MKilo Code Reviewer · 1.9MKilo Code Reviewer · 1.9MKilo Code Reviewer · 1.7MKilo Code Reviewer · 1.4MKilo Code Reviewer · 1.7MKilo Code Reviewer · 1.3MKilo Code Reviewer · 1MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Free
Freemium
Freemium
Starting price
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Free
$4per month · free tier available
$15per month · free tier available
Free tier
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Free trial
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–
–
API access
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–
–
–
Plans
GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
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Free FreeTeam $4/moEnterprise $21/mo
Free & Open Source FreeTeams $15/moKilo Pass $19/moEnterprise Custom
Capabilities input → output
Input
CodeImagesText
CodeText
CodeText
Code
Output
Code
Code
Code
Text
Skill level
Advanced
Advanced
Intermediate
Intermediate
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Development & CodeAI Code Review
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
2
3
4
5
Coding
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Code reviews
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Developer tools
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Agents
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Code quality
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Code security analysis
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GitHub pull requests
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Agent management
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Code analysis
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Development
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–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
2
0
Verified listing
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–
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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.