OpenAI Codex CLI vs Theia IDE

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
TITheia IDE
Competitor 2
Competitor 3
Suggested competitors for OpenAI Codex CLI: Gemini CLI100% Qwen Code98% OpenCode97% Visual Studio Code95% JetBrains AI Assistant95% GitHub Copilot CLI94% Kimi Code94% Amp93%
Compare
2 tools · best value per row highlighted
Your tool OpenAI Codex CLI
developers.openai.com
OpenAI Codex CLI brings the Codex coding agent to the terminal and to scripts.
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
—
35.3Kvisits/mo
MoM change
—
▼ 8.1%
6-month growth
—
-40.2%
Global rank web
—
#929,571
Avg. last 3 months
—
41.1K
Bounce rate lower is better
—
41%
Pages / visit
—
1.7
Visit duration
—
27s
Traffic sources
—
—
OpenAI Codex CLITheia IDE
014.8K29.5K44.3K59.1KTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3K10K100KTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3KDec '25Jan '26FebMarAprMayJunJul
Pricing
Model
Paid
Free
Starting price
—
Free
Free tier
–
Free trial
–
–
API access
–
–
Plans
GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
—
Capabilities input → output
Input
CodeImagesText
CodeText
Output
Code
Code
Skill level
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding AssistantAI Developer Tools
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
2
5
Coding
Developer tools
Agent creation
–
Development
–
Vs code
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
Saves
0
0
Reviews
0
0
Prompts
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.