OpenAI Codex CLI vs Kimi Code vs Haystack vs Gemini CLI

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
Haystack
Competitor 3
Gemini CLI
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 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
Competitor Gemini CLI
github.com
It can query and edit large codebases, generate new apps from PDFs, images, or sketches using multimodal input, and debug problems when you describe them in plain language.
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 CodeHaystackGemini CLI
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
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Free
Starting price
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$15per month · free tier available
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Free
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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Free (personal Google account) Free
Capabilities input → output
Input
CodeImagesText
CodeText
CodeDocuments
CodeDocumentsImagesText
Output
Code
Code
Apps
Code
Skill level
Advanced
Intermediate
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Coding Assistant
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
2
6
5
4
Developer tools
Coding
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Agent creation
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Agents
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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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Code analysis
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Developer assistance
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Development
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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
▲ 0
▲ 0
Saves
0
0
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0
Reviews
0
0
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Prompts
0
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.