OpenAI Codex CLI vs OpenCode vs GitHub Copilot vs Stack AI

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
Stack AI
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 Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
—
637.9Mvisits/mo
6.3Kvisits/mo
MoM change
—
—
▲ 3.7%
▼ 57.9%
6-month growth
—
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+19.3%
-93.7%
Global rank web
—
—
#49
#1,700,092
Avg. last 3 months
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—
629.7M
13.9K
Bounce rate lower is better
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36%
39%
Pages / visit
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—
5.9
1.8
Visit duration
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—
6m 26s
14s
Traffic sources
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● Direct 83% · ● Referral 15%
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OpenAI Codex CLIOpenCodeGitHub CopilotStack AI
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 · 637.9MStack AI · 143.4KStack AI · 153.7KStack AI · 167.9KStack AI · 160KStack AI · 99.4KStack AI · 35.9KStack AI · 17.4KStack AI · 20.6KStack AI · 14.9KStack AI · 6.3K1K10K100K1M10M100M1BGitHub Copilot · 484.3MGitHub Copilot · 504MGitHub Copilot · 542.6MGitHub Copilot · 534.8MGitHub Copilot · 634.3MGitHub Copilot · 631MGitHub Copilot · 636.1MGitHub Copilot · 615.2MGitHub Copilot · 637.9MStack AI · 143.4KStack AI · 153.7KStack AI · 167.9KStack AI · 160KStack AI · 99.4KStack AI · 35.9KStack AI · 17.4KStack AI · 20.6KStack AI · 14.9KStack AI · 6.3KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Free
Freemium
Freemium
Starting price
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Free
$4per month · free tier available
Free tier
Free tier
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Free trial
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API access
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Plans
GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
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Free FreeTeam $4/moEnterprise $21/mo
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Capabilities input → output
Input
CodeImagesText
CodeText
CodeText
DataDocumentsText
Output
Code
Code
Code
Apps
Skill level
Advanced
Advanced
Intermediate
Intermediate
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Code Review+1 more
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
4
6
9
7
Agents
Coding
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Developer tools
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Terminal
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Code autocompletion
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No-code
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Workflows
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Agent creation
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Business automation
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Code reviews
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Coding in VS Code
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Process automation
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Vs code
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Agent management
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Debugging
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Development
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Finance workflow automation
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Local AI
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Self hosted
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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
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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.