OpenAI Codex CLI vs OpenCode vs GitHub Copilot 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
OpenCode
Competitor 2
GitHub Copilot
Competitor 3
TITheia IDE
Compare
4 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 OpenCode
opencode.ai
OpenCode is an open-source AI coding agent that helps developers write code in the terminal, an IDE or a desktop app.
Make main Remove
Competitor GitHub Copilot
github.com
Your AI pair programmer that actually knows the codebase
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
—
—
637.9Mvisits/mo
35.3Kvisits/mo
MoM change
—
—
▲ 3.7%
▼ 8.1%
6-month growth
—
—
+19.3%
-40.2%
Global rank web
—
—
#49
#929,571
Avg. last 3 months
—
—
629.7M
41.1K
Bounce rate lower is better
—
—
36%
41%
Pages / visit
—
—
5.9
1.7
Visit duration
—
—
6m 26s
27s
Traffic sources
—
—
● Direct 83% · ● Referral 15%
—
OpenAI Codex CLIOpenCodeGitHub CopilotTheia IDE
0159.5M318.9M478.4M637.9MGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MTheia IDE · 54.7KTheia IDE · 58.4KTheia IDE · 59.1KTheia IDE · 49.4KTheia IDE · 47.5KTheia IDE · 49.5KTheia IDE · 38.4KTheia IDE · 35.3K10K100K1M10M100M1BGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MTheia 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 '26FebMarAprMayJunJul
Pricing
Model
Paid
Free
Freemium
Free
Starting price
—
Free
$4per month · free tier available
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
—
Free FreeTeam $4/moEnterprise $21/mo
—
Capabilities input → output
Input
CodeImagesText
CodeText
CodeText
CodeText
Output
Code
Code
Code
Code
Skill level
Advanced
Advanced
Intermediate
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Development & CodeAI Coding AssistantAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
2
3
4
5
Coding
Developer tools
–
Development
–
–
Agents
–
–
–
Code reviews
–
–
–
Agent creation
–
–
–
Agent management
–
–
–
Vs code
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
2
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.