Stack AI vs CometAPI vs Haystack vs Pipefy

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

Your tool
Stack AI
vs
Competitor 1
CometAPI
Competitor 2
Haystack
Competitor 3
Pipefy
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
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Competitor CometAPI
cometapi.com
CometAPI functions as an aggregation layer that sits between your application and hundreds of AI model providers
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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 Pipefy
pipefy.com
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Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
302.3Kvisits/mo
—
2.7Mvisits/mo
MoM change
▼ 57.9%
▲ 9.9%
—
▲ 13.8%
6-month growth
-93.7%
-16.5%
—
+18.7%
Global rank web
#1,700,092
#157,147
—
#17,377
Avg. last 3 months
13.9K
295.7K
—
2.6M
Bounce rate lower is better
39%
46%
—
45%
Pages / visit
1.8
2.9
—
7.4
Visit duration
14s
38s
—
9m 54s
Traffic sources
—
● Direct 69% · ● Referral 30%
—
● Direct 80% · ● Mail 13%
Stack AICometAPIHaystackPipefy
0726.4K1.5M2.2M2.9MStack 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 · 6.3KCometAPI · 834.4KCometAPI · 619.7KCometAPI · 437.2KCometAPI · 362.2KCometAPI · 355.5KCometAPI · 362.7KCometAPI · 309.5KCometAPI · 275.2KCometAPI · 302.3KPipefy · 2.1MPipefy · 2.2MPipefy · 2.4MPipefy · 2.3MPipefy · 2.9MPipefy · 2.4MPipefy · 2.6MPipefy · 2.4MPipefy · 2.7M1K10K100K1M10MStack 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 · 6.3KCometAPI · 834.4KCometAPI · 619.7KCometAPI · 437.2KCometAPI · 362.2KCometAPI · 355.5KCometAPI · 362.7KCometAPI · 309.5KCometAPI · 275.2KCometAPI · 302.3KPipefy · 2.1MPipefy · 2.2MPipefy · 2.4MPipefy · 2.3MPipefy · 2.9MPipefy · 2.4MPipefy · 2.6MPipefy · 2.4MPipefy · 2.7MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
—
Freemium
Starting price
Free tier
$4per month · free tier available
—
Free tier
Free tier
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Free trial
–
–
API access
–
–
Plans
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Free Trial FreePay-as-you-go Custom/usage-basedEnterprise Custom/mo
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Starter FreeBusiness CustomEnterprise Custom
Capabilities input → output
Input
DataDocumentsText
ImagesText
CodeDocuments
DataText
Output
Apps
ImagesTextVideo
Apps
Apps
Skill level
Intermediate
Advanced
Advanced
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeAI API
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
6
7
4
Agents
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Agent creation
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No-code
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Workflows
–
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Developer tools
–
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APIs
–
–
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LLM development
–
–
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LLM gateway
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–
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RAG
–
–
–
API integrations
–
–
–
Business automation
–
–
–
Process automation
–
–
–
Agent memory
–
–
–
Finance workflow automation
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–
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Image generation
–
–
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Self hosted
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–
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Video generation
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–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
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–
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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.