Langflow vs Stack AI vs Flowise vs Haystack
Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.
Your tool
Langflow
vs
Langflow
Competitor 1
Stack AI
Stack AI
Competitor 2
Flowise
Flowise
Competitor 3
Haystack
HaystackCompare
4 tools · best value per row highlighted
Competitor
Haystack
Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
Traffic estimated monthly website traffic
Monthly visits
215.3Kvisits/mo
6.3Kvisits/mo
168.3Kvisits/mo
—
MoM change
▼ 0.7%
▼ 57.9%
▼ 27.6%
—
6-month growth
-4.9%
-93.7%
-14.1%
—
Global rank web
#217,191
#1,700,092
#239,649
—
Avg. last 3 months
225.2K
13.9K
203.8K
—
Bounce rate lower is better
44%
39%
43%
—
Pages / visit
2.2
1.8
2.8
—
Visit duration
1m 04s
14s
1m 23s
—
Traffic sources
● Direct 76% · ● Referral 24%
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● Direct 79% · ● Referral 19%
—
LangflowStack AIFlowiseHaystack
Pricing
Model
Free
Freemium
Freemium
—
Starting price
Free
Free tier
$35per month · free tier available
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Free tier
–
Free trial
–
–
–
API access
–
Plans
—
—
Free FreeStarter $35/moPro $65/mo
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Capabilities input → output
Input
Text
DataDocumentsText
DocumentsText
CodeDocuments
Output
Apps
Apps
Apps
Apps
Skill level
Advanced
Intermediate
Advanced
Advanced
Categories
Tasks what each tool can do · 1 shared · core partial
Tasks covered
9
3
3
2
Agents
No-code
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Workflows
–
Agent creation
–
–
Chatbots
–
–
–
Developer tools
–
–
–
Development
–
–
–
LLM development
–
–
–
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.