OpenAI Codex vs Kimi Code vs Theia IDE

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

Your tool
OpenAI Codex
vs
Competitor 1
Kimi Code
Competitor 2
TITheia IDE
Competitor 3
Suggested competitors for OpenAI Codex: Claude Code92% Cursor86% GitHub Copilot86% Jules85% CodeRabbit84% Gemini CLI82% Qodo (Formerly Codium)82% Google Antigravity80%
Compare
3 tools · best value per row highlighted
Your tool OpenAI Codex
openai.com
A dedicated coding agent that writes and runs code for you
Remove
Competitor Kimi Code
kimi.com
Writing code means constantly jumping between your editor and browser tabs stuffed with documentation
Make main Remove
Competitor TITheia IDE
theia-ide.org
An open-source IDE that puts AI at the center while giving you complete control over how it works
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
204.3Mvisits/mo
60.1Mvisits/mo
35.3Kvisits/mo
MoM change
▲ 3.6%
▲ 52.2%
▼ 8.1%
6-month growth
+0.3%
+33.8%
-40.2%
Global rank web
#212
#852
#929,571
Avg. last 3 months
197.3M
48.3M
41.1K
Bounce rate lower is better
58%
37%
41%
Pages / visit
3.0
3.9
1.7
Visit duration
2m 31s
7m 13s
27s
Traffic sources
● Direct 81% · ● Referral 17%
● Direct 89% · ● Referral 10%
—
OpenAI CodexKimi CodeTheia IDE
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 · 204.3MKimi Code · 43.3MKimi Code · 38.2MKimi Code · 33.5MKimi Code · 44.9MKimi Code · 48.1MKimi Code · 43MKimi Code · 45.3MKimi Code · 39.5MKimi Code · 60.1MTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3K10K100K1M10M100M1BOpenAI 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 · 204.3MKimi Code · 43.3MKimi Code · 38.2MKimi Code · 33.5MKimi Code · 44.9MKimi Code · 48.1MKimi Code · 43MKimi Code · 45.3MKimi Code · 39.5MKimi Code · 60.1MTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Free
Starting price
$20per month · free tier available
$15per month · free tier available
Free
Free tier
Free trial
–
–
–
API access
–
–
–
Plans
—
Adagio FreePlus $15/moPro $31/moMax $79/mo+1 more
—
Capabilities input → output
Input
CodeText
CodeText
CodeText
Output
Code
Code
Code
Skill level
Advanced
Intermediate
Advanced
Categories
Development & CodeAI Code ReviewAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeAI Coding AssistantAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
9
6
5
Coding
Developer tools
–
Debugging
–
Development
–
Agents
–
–
GitHub automation
–
–
GitHub pull requests
–
–
Refactoring
–
–
Agent creation
–
–
Code documentation
–
–
Code reviews
–
–
Developer assistance
–
–
Shell commands
–
–
Terminal
–
–
Vs code
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 1
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
0
Verified listing
–
–
–

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.