OpenAI Codex CLI vs Stack AI vs Haystack vs Amp

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

Your tool
OpenAI Codex CLI
vs
Competitor 1
Stack AI
Competitor 2
Haystack
Competitor 3
Amp
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 Stack AI
stack-ai.com
Connect AI models visually
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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 Amp
ampcode.com
Amp is a coding agent and development environment for engineers who want agents running independently.
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Traffic estimated monthly website traffic
Monthly visits
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6.3Kvisits/mo
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MoM change
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▼ 57.9%
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6-month growth
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-93.7%
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Global rank web
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#1,700,092
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Avg. last 3 months
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13.9K
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Bounce rate lower is better
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39%
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Pages / visit
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1.8
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Visit duration
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14s
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Traffic sources
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OpenAI Codex CLIStack AIHaystackAmp
042K84K126K167.9KStack 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 · 6.3K1K10K100K1MStack 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
Freemium
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Freemium
Starting price
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Free tier
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$20per 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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Hobby FreeIndividual (Megawatt) $20/moGigawatt CustomTeams Custom+1 more
Capabilities input → output
Input
CodeImagesText
DataDocumentsText
CodeDocuments
CodeTextVideo
Output
Code
Apps
Apps
Code
Skill level
Advanced
Intermediate
Advanced
Advanced
Categories
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Coding Assistant
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
4
7
7
4
Agents
Developer tools
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Coding
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Agent creation
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Terminal
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LLM development
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No-code
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RAG
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Workflows
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Business automation
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Process automation
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Agent memory
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Finance workflow automation
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Self hosted
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Community on aitoolstime
Rating
no ratings yet
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Upvotes
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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.