OpenAI Codex CLI vs Haystack vs OpenCode vs devlo

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
Haystack
Competitor 2
OpenCode
Competitor 3
devlo
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.
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Competitor Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
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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.
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Competitor devlo
devlo.ai
Engineering teams get a browser-based system that handles code from multiple angles
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Traffic estimated monthly website traffic
Monthly visits
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MoM change
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▼ 70.3%
6-month growth
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Global rank web
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#8,880,689
Avg. last 3 months
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537
Bounce rate lower is better
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0%
Pages / visit
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Visit duration
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Traffic sources
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OpenAI Codex CLIHaystackOpenCodedevlo
02K3.9K5.9K7.9Kdevlo · 7.9Kdevlo · 5.4Kdevlo · 1.6K1K10Kdevlo · 7.9Kdevlo · 5.4Kdevlo · 1.6KDec '25Jan '26Feb
Pricing
Model
Paid
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Free
Freemium
Starting price
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Free
$19per 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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Capabilities input → output
Input
CodeImagesText
CodeDocuments
CodeText
CodeText
Output
Code
Apps
Code
AppsCode
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI App Builder+2 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
4
7
6
14
Agents
Coding
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Developer tools
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Agent creation
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Development
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Self hosted
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Code reviews
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GitHub pull requests
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LLM development
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RAG
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Teams performance analytics
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GitHub
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Jira tickets
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Agent memory
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Code quality
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Codebase q a
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Debugging
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Frontend development
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Local AI
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No-code
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Terminal
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Community on aitoolstime
Rating
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Upvotes
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▲ 1
Saves
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Reviews
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Prompts
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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.