Stack AI vs CometAPI vs Haystack vs CrewAI

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
CrewAI
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 CrewAI
crewai.com
CrewAI is a multi-agent platform that covers the full agent lifecycle for businesses: discover what to automate, build agents, govern them in production and optimize them over time.
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Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
302.3Kvisits/mo
—
476.6Kvisits/mo
MoM change
▼ 57.9%
▲ 9.9%
—
▼ 10.3%
6-month growth
-93.7%
-16.5%
—
-5.3%
Global rank web
#1,700,092
#157,147
—
#107,487
Avg. last 3 months
13.9K
295.7K
—
564.3K
Bounce rate lower is better
39%
46%
—
46%
Pages / visit
1.8
2.9
—
2.6
Visit duration
14s
38s
—
1m 32s
Traffic sources
—
● Direct 69% · ● Referral 30%
—
● Direct 75% · ● Referral 23%
Stack AICometAPIHaystackCrewAI
0208.6K417.2K625.8K834.4KStack 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 · 302.3KCrewAI · 408.9KCrewAI · 417.1KCrewAI · 521.4KCrewAI · 503.5KCrewAI · 610.1KCrewAI · 646.1KCrewAI · 685.2KCrewAI · 531.1KCrewAI · 476.6K1K10K100K1MStack 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 · 302.3KCrewAI · 408.9KCrewAI · 417.1KCrewAI · 521.4KCrewAI · 503.5KCrewAI · 610.1KCrewAI · 646.1KCrewAI · 685.2KCrewAI · 531.1KCrewAI · 476.6KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
—
Free
Starting price
Free tier
$4per month · free tier available
—
Free
Free tier
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Free trial
–
–
API access
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Plans
—
Free Trial FreePay-as-you-go Custom/usage-basedEnterprise Custom/mo
—
Basic FreeEnterprise $0
Capabilities input → output
Input
DataDocumentsText
ImagesText
CodeDocuments
Text
Output
Apps
ImagesTextVideo
Apps
AppsCode
Skill level
Intermediate
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeAI API
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools+2 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
6
7
9
Agents
–
Agent creation
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Developer tools
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No-code
–
–
Workflows
–
–
APIs
–
–
–
Agent collaboration
–
–
–
LLM development
–
–
–
LLM gateway
–
–
–
RAG
–
–
–
API integrations
–
–
–
Agent management
–
–
–
Business automation
–
–
–
Process automation
–
–
–
Agent memory
–
–
–
Agent testing
–
–
–
Development
–
–
–
Finance workflow automation
–
–
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Image generation
–
–
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Self hosted
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–
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Video generation
–
–
–
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
–
–
–
–

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.