OpenAI Codex vs Pi vs OpenAI API 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
Pi
Competitor 2
OpenAI API
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 Pi
pi.ai
An AI that's genuinely pleasant to talk with
Make main Remove
Competitor OpenAI API
platform.openai.com
The API powering the AI ecosystem
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
473.9Kvisits/mo
15.2Mvisits/mo
1.9Kvisits/mo
MoM change
▲ 3.6%
▼ 9.4%
▲ 4.6%
▼ 42.3%
6-month growth
+0.3%
-16.4%
-2.4%
-94.4%
Global rank web
#212
#87,743
—
#4,668,091
Avg. last 3 months
197.3M
512.8K
15.2M
10.5K
Bounce rate lower is better
58%
33%
34%
34%
Pages / visit
3.0
3.7
5.4
2.4
Visit duration
2m 31s
1m 37s
3m 56s
19s
Traffic sources
● Direct 81% · ● Referral 17%
● Direct 87% · ● Referral 9%
● Direct 82% · ● Referral 15%
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OpenAI CodexPiOpenAI APIKilo 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 · 204.3MPi · 609.8KPi · 591.6KPi · 610.8KPi · 583.3KPi · 566.6KPi · 557.8KPi · 576.6KPi · 541.3KPi · 523.3KPi · 473.9KOpenAI 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 · 15.2MKilo 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 · 204.3MPi · 609.8KPi · 591.6KPi · 610.8KPi · 583.3KPi · 566.6KPi · 557.8KPi · 576.6KPi · 541.3KPi · 523.3KPi · 473.9KOpenAI 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 · 15.2MKilo 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
Paid
Freemium
Starting price
$20per month · free tier available
Free
—
$20per month · free tier available
Free tier
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Free trial
–
–
–
API access
–
–
–
–
Plans
—
—
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Capabilities input → output
Input
CodeText
TextAudio
TextImagesDocumentsAudio
CodeText
Output
Code
TextAudio
VideoTextImagesCodeAudio
Code
Skill level
Advanced
Beginner-friendly
Advanced
Advanced
Categories
Development & CodeAI Code ReviewAI Coding Assistant
Chatbots & CompanionsEducation & LearningHealthcare & WellnessAI Chatbot+2 more
Development & CodeAI APILarge Language Models (LLMs)
Development & CodeAI Coding Assistant
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
2
7
1
2
Coding
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APIs
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–
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Chatting
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Coding in VS Code
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Chatbots
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Code reviews
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–
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Companions
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–
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Mental health
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Wellness
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Coaching
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Therapeutic chatbot
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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
▲ 1
▲ 1
▲ 0
Saves
0
1
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.