OpenAI Codex vs Devin Review vs Kilo Code vs Gemini CLI

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

Your tool
OpenAI Codex
vs
Competitor 1
Devin Review
Competitor 2
Kilo Code
Competitor 3
Gemini 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
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Competitor Devin Review
app.devin.ai
Devin Review is the fastest way to truly understand code—especially when it changes
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.
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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.
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Traffic estimated monthly website traffic
Monthly visits
204.3Mvisits/mo
1.6Mvisits/mo
1.9Kvisits/mo
—
MoM change
▲ 3.6%
▼ 7.9%
▼ 42.3%
—
6-month growth
+0.3%
+275.1%
-94.4%
—
Global rank web
#212
—
#4,668,091
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Avg. last 3 months
197.3M
1.5M
10.5K
—
Bounce rate lower is better
58%
20%
34%
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Pages / visit
3.0
10.0
2.4
—
Visit duration
2m 31s
7m 17s
19s
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Traffic sources
● Direct 81% · ● Referral 17%
● Direct 60% · ● Referral 39%
—
—
OpenAI CodexDevin ReviewKilo CodeGemini CLI
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 · 204.3MDevin Review · 279.5KDevin Review · 296KDevin Review · 398KDevin Review · 425.8KDevin Review · 534.2KDevin Review · 794.3KDevin Review · 1.2MDevin Review · 1.7MDevin Review · 1.6MKilo 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 · 204.3MDevin Review · 279.5KDevin Review · 296KDevin Review · 398KDevin Review · 425.8KDevin Review · 534.2KDevin Review · 794.3KDevin Review · 1.2MDevin Review · 1.7MDevin Review · 1.6MKilo 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
Freemium
Freemium
Free
Starting price
$20per month · free tier available
$500per month · free tier available
$20per month · free tier available
Free
Free tier
Free trial
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–
–
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API access
–
–
–
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Plans
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Free (personal Google account) Free
Capabilities input → output
Input
CodeText
CodeWeb pages
CodeText
CodeDocumentsImagesText
Output
Code
Text
Code
Code
Skill level
Advanced
Intermediate
Advanced
Advanced
Categories
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeAI Code Review
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
4
5
4
4
Coding
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Code analysis
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Code reviews
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Development
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GitHub pull requests
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Coding in VS Code
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GitHub
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–
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Code documentation
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Debugging
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–
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Developer tools
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Vs code
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–
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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.