OpenAI Codex CLI vs Kimi Code vs GitHub Copilot CLI vs Haystack

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
Kimi Code
Competitor 2
GitHub Copilot CLI
Competitor 3
Haystack
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 Kimi Code
kimi.com
Writing code means constantly jumping between your editor and browser tabs stuffed with documentation
Make main Remove
Competitor GitHub Copilot CLI
github.com
It reads, writes and runs code, works directly with your issues and pull requests, and carries a task from planning to merged code.
Make main Remove
Competitor Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
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60.1Mvisits/mo
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MoM change
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▲ 52.2%
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6-month growth
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+33.8%
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Global rank web
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#852
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Avg. last 3 months
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48.3M
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Bounce rate lower is better
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37%
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Pages / visit
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3.9
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Visit duration
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7m 13s
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Traffic sources
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● Direct 89% · ● Referral 10%
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OpenAI Codex CLIKimi CodeGitHub Copilot CLIHaystack
015M30.1M45.1M60.1MKimi Code · 43.3MKimi Code · 38.2MKimi Code · 33.5MKimi Code · 44.9MKimi Code · 48.1MKimi Code · 43MKimi Code · 45.3MKimi Code · 39.5MKimi Code · 60.1M10M100MKimi Code · 43.3MKimi Code · 38.2MKimi Code · 33.5MKimi Code · 44.9MKimi Code · 48.1MKimi Code · 43MKimi Code · 45.3MKimi Code · 39.5MKimi Code · 60.1MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Paid
Freemium
Free
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Starting price
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$15per month · free tier available
Free
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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
Adagio FreePlus $15/moPro $31/moMax $79/mo+1 more
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Capabilities input → output
Input
CodeImagesText
CodeText
CodeText
CodeDocuments
Output
Code
Code
Code
Apps
Skill level
Advanced
Intermediate
Intermediate
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
2
6
4
5
Developer tools
Coding
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Agents
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Agent creation
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LLM development
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Debugging
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Refactoring
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Agent memory
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Developer assistance
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GitHub management
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Shell commands
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 1
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Saves
0
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Reviews
0
0
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Prompts
0
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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.