Stack AI vs OpenAI Codex CLI vs Haystack vs Activepieces

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

Your tool
Stack AI
vs
Competitor 1
OpenAI Codex CLI
Competitor 2
Haystack
Competitor 3
Activepieces
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
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Competitor 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 Activepieces
activepieces.com
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Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
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221.7Kvisits/mo
MoM change
▼ 57.9%
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▲ 1.8%
6-month growth
-93.7%
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-10.0%
Global rank web
#1,700,092
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#174,361
Avg. last 3 months
13.9K
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226.6K
Bounce rate lower is better
39%
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39%
Pages / visit
1.8
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3.8
Visit duration
14s
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2m 39s
Traffic sources
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● Direct 74% · ● Referral 24%
Stack AIOpenAI Codex CLIHaystackActivepieces
061.6K123.1K184.7K246.2KStack 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 · 6.3KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7K1K10K100K1MStack 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 · 6.3KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Paid
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Freemium
Starting price
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
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GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
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Free FreePlus $20/moTeam $200/mo
Capabilities input → output
Input
DataDocumentsText
CodeImagesText
CodeDocuments
Text
Output
Apps
Code
Apps
Apps
Skill level
Intermediate
Advanced
Advanced
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Productivity & OfficeAI AgentAI Workflow
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
7
4
7
4
Agents
Agent creation
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No-code
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Workflows
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Developer tools
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Coding
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LLM development
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RAG
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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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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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Saves
0
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Reviews
0
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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.