Gemini vs OpenAI Codex vs Kilo Code vs OpenAI API

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

Your tool
Gemini
vs
Competitor 1
OpenAI Codex
Competitor 2
Kilo Code
Competitor 3
OpenAI API
Compare
4 tools · best value per row highlighted
Your tool Gemini
gemini.google.com
Google's most capable AI model
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Competitor OpenAI Codex
openai.com
A dedicated coding agent that writes and runs code for you
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 OpenAI API
platform.openai.com
The API powering the AI ecosystem
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Traffic estimated monthly website traffic
Monthly visits
2.6Bvisits/mo
204.3Mvisits/mo
1.9Kvisits/mo
15.2Mvisits/mo
MoM change
▼ 2.6%
▲ 3.6%
▼ 42.3%
▲ 4.6%
6-month growth
+0.8%
+0.3%
-94.4%
-2.4%
Global rank web
#17
#212
#4,668,091
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Avg. last 3 months
2.7B
197.3M
10.5K
15.2M
Bounce rate lower is better
28%
58%
34%
34%
Pages / visit
4.1
3.0
2.4
5.4
Visit duration
7m 01s
2m 31s
19s
3m 56s
Traffic sources
● Direct 94% · ● Referral 4%
● Direct 81% · ● Referral 17%
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● Direct 82% · ● Referral 15%
GeminiOpenAI CodexKilo CodeOpenAI API
0725.8M1.5B2.2B2.9BGemini · 1.4BGemini · 1.7BGemini · 2.1BGemini · 2.1BGemini · 2.6BGemini · 2.8BGemini · 2.9BGemini · 2.9BGemini · 2.7BGemini · 2.6BOpenAI 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 · 204.3MKilo 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 · 1.9KOpenAI API · 18.7MOpenAI API · 16.7MOpenAI API · 16.5MOpenAI API · 15.6MOpenAI API · 15.9MOpenAI API · 15.1MOpenAI API · 15.7MOpenAI API · 14.6MOpenAI API · 15.2M1K10K100K1M10M100M1B10BGemini · 1.4BGemini · 1.7BGemini · 2.1BGemini · 2.1BGemini · 2.6BGemini · 2.8BGemini · 2.9BGemini · 2.9BGemini · 2.7BGemini · 2.6BOpenAI 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 · 204.3MKilo 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 · 1.9KOpenAI API · 18.7MOpenAI API · 16.7MOpenAI API · 16.5MOpenAI API · 15.6MOpenAI API · 15.9MOpenAI API · 15.1MOpenAI API · 15.7MOpenAI API · 14.6MOpenAI API · 15.2MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Paid
Starting price
$4.99per month · free tier available
$20per month · free tier available
$20per month · free tier available
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Free tier
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Free trial
–
–
API access
–
–
–
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Plans
Free FreeGoogle AI Plus $4.99/moGoogle AI Pro $19.99/moGoogle AI Ultra 5x $99.99/mo+1 more
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Capabilities input → output
Input
AudioTextImagesDocumentsCode
TextCode
TextCode
AudioDocumentsImagesText
Output
VideoTextImagesCodeAudio
Code
Code
VideoTextImagesAudioCode
Skill level
Beginner-friendly
Advanced
Advanced
Advanced
Categories
Chatbots & CompanionsDevelopment & CodeEducation & LearningImage Editing+27 more
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeAI APILarge Language Models (LLMs)
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
15
9
5
6
Coding
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Large language models
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Development
–
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APIs
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Agents
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Chatbots
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Image generation
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Coding in VS Code
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Developer tools
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Email writing
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–
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GitHub automation
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–
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GitHub pull requests
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Image to image
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LLM development
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PDF analysis
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Research
–
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Search engine
–
–
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Summarizing
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Translations
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Video generation
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Video summaries
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Writing
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API integrations
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Chatbot building
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Code analysis
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Code documentation
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Code reviews
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Debugging
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Image editing
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Terminal
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Community on aitoolstime
Rating
★ 4.33 ratings
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 11
▲ 1
▲ 0
▲ 1
Saves
1
0
0
0
Reviews
3
0
0
0
Prompts
4
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.