Stack AI vs Haystack vs Activepieces vs Langflow

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

Your tool
Stack AI
vs
Competitor 1
Haystack
Competitor 2
Activepieces
Competitor 3
Langflow
Compare
4 tools · best value per row highlighted
Your tool 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 Activepieces
activepieces.com
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Competitor Langflow
langflow.org
Drag and drop AI
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Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
—
221.7Kvisits/mo
215.3Kvisits/mo
MoM change
▼ 57.9%
—
▲ 1.8%
▼ 0.7%
6-month growth
-93.7%
—
-10.0%
-4.9%
Global rank web
#1,700,092
—
#174,361
#217,191
Avg. last 3 months
13.9K
—
226.6K
225.2K
Bounce rate lower is better
39%
—
39%
44%
Pages / visit
1.8
—
3.8
2.2
Visit duration
14s
—
2m 39s
1m 04s
Traffic sources
—
—
● Direct 74% · ● Referral 24%
● Direct 76% · ● Referral 24%
Stack AIHaystackActivepiecesLangflow
073.8K147.7K221.5K295.3KStack 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 · 221.7KLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3K1K10K100K1MStack 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 · 6.3KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7KLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
—
Freemium
Free
Starting price
Free tier
—
$20per month · free tier available
Free
Free tier
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Free trial
–
–
–
API access
–
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Plans
—
—
Free FreePlus $20/moTeam $200/mo
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Capabilities input → output
Input
DataDocumentsText
CodeDocuments
Text
Text
Output
Apps
Apps
Apps
Apps
Skill level
Intermediate
Advanced
Intermediate
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Productivity & OfficeAI AgentAI Workflow
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
3
2
4
9
Agents
No-code
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Workflows
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Agent creation
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Chatbots
–
–
–
Developer tools
–
–
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Development
–
–
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LLM development
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–
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APIs
–
–
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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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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.