OpenAI Codex vs Aider vs Gemini CLI vs Kilo Code

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

Your tool
OpenAI Codex
vs
Competitor 1
Aider
Competitor 2
Gemini CLI
Competitor 3
Kilo Code
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
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Competitor Aider
aider.chat
AI pair programming in your terminal
Make main Remove
Competitor Gemini CLI
github.com
It can query and edit large codebases, generate new apps from PDFs, images, or sketches using multimodal input, and debug problems when you describe them in plain language.
Make main Remove
Competitor Kilo Code
kilocode.ai
Kilo Code is an open source AI agent Visual Studio (VS) Code extension that focuses on enhancing the efficiency of coding. The tool can generate code, automate tasks, and offer practical suggestions.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
204.3Mvisits/mo
317.9Kvisits/mo
—
1.9Kvisits/mo
MoM change
▲ 3.6%
▼ 15.9%
—
▼ 42.3%
6-month growth
+0.3%
-12.7%
—
-94.4%
Global rank web
#212
#140,509
—
#4,668,091
Avg. last 3 months
197.3M
378.5K
—
10.5K
Bounce rate lower is better
58%
48%
—
34%
Pages / visit
3.0
2.0
—
2.4
Visit duration
2m 31s
55s
—
19s
Traffic sources
● Direct 81% · ● Referral 17%
● Direct 83% · ● Referral 16%
—
—
OpenAI CodexAiderGemini CLIKilo Code
066.6M133.2M199.7M266.3MOpenAI 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 · 204.3MAider · 293.8KAider · 277.7KAider · 314.6KAider · 289.1KAider · 364.1KAider · 402KAider · 478.7KAider · 439.5KAider · 378KAider · 317.9KKilo Code · 744.7KKilo Code · 164KKilo Code · 48.6KKilo Code · 16KKilo Code · 33.5KKilo Code · 14.4KKilo Code · 10.5KKilo Code · 26.4KKilo Code · 3.2KKilo Code · 1.9K1K10K100K1M10M100M1BOpenAI 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 · 204.3MAider · 293.8KAider · 277.7KAider · 314.6KAider · 289.1KAider · 364.1KAider · 402KAider · 478.7KAider · 439.5KAider · 378KAider · 317.9KKilo Code · 744.7KKilo Code · 164KKilo Code · 48.6KKilo Code · 16KKilo Code · 33.5KKilo Code · 14.4KKilo Code · 10.5KKilo Code · 26.4KKilo Code · 3.2KKilo Code · 1.9KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Free
Free
Freemium
Starting price
$20per month · free tier available
Free
Free
$20per month · free tier available
Free tier
Free trial
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–
–
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API access
–
–
–
–
Plans
—
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Free (personal Google account) Free
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Capabilities input → output
Input
TextCode
AudioWeb pagesTextImagesCode
TextImagesDocumentsCode
TextCode
Output
Code
Code
Code
Code
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
4
8
4
4
Coding
Development
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Code analysis
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Code testing
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Coding in VS Code
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Git commands
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–
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Terminal
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–
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Code documentation
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–
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Code reviews
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–
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Debugging
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–
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Developer tools
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–
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Refactoring
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–
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Terminal commands management
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–
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Vs code
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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
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.