OpenAI Codex CLI vs GitHub Copilot CLI vs Haystack vs LangChain

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
GitHub Copilot CLI
Competitor 2
Haystack
Competitor 3
LangChain
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 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
Competitor LangChain
langchain.com
Framework for building with large language models
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
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3.4Mvisits/mo
MoM change
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▲ 0.7%
6-month growth
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+21.0%
Global rank web
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#13,384
Avg. last 3 months
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3.3M
Bounce rate lower is better
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42%
Pages / visit
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6.2
Visit duration
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5m 29s
Traffic sources
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● Direct 73% · ● Referral 24%
OpenAI Codex CLIGitHub Copilot CLIHaystackLangChain
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4M1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Paid
Free
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Freemium
Starting price
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Free
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$39per month · free tier available
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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Developer FreePlus $39/moEnterprise Custom/mo
Capabilities input → output
Input
CodeImagesText
CodeText
CodeDocuments
CodeText
Output
Code
Code
Apps
Apps
Skill level
Advanced
Intermediate
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
4
5
7
6
Agents
Developer tools
Agent creation
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Coding
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LLM development
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RAG
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Development
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GitHub pull requests
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Agent memory
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Agent testing
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GitHub management
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Self hosted
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Terminal
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
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▲ 1
Saves
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Reviews
0
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Prompts
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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.