LangChain vs Langflow vs Stack AI vs Haystack

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

Your tool
LangChain
vs
Competitor 1
Langflow
Competitor 2
Stack AI
Competitor 3
Haystack
Compare
4 tools · best value per row highlighted
Your tool LangChain
langchain.com
Framework for building with large language models
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Competitor Langflow
langflow.org
Drag and drop AI
Make main Remove
Competitor 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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Traffic estimated monthly website traffic
Monthly visits
3.4Mvisits/mo
215.3Kvisits/mo
6.3Kvisits/mo
—
MoM change
▲ 0.7%
▼ 0.7%
▼ 57.9%
—
6-month growth
+21.0%
-4.9%
-93.7%
—
Global rank web
#13,384
#217,191
#1,700,092
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Avg. last 3 months
3.3M
225.2K
13.9K
—
Bounce rate lower is better
42%
44%
39%
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Pages / visit
6.2
2.2
1.8
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Visit duration
5m 29s
1m 04s
14s
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Traffic sources
● Direct 73% · ● Referral 24%
● Direct 76% · ● Referral 24%
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LangChainLangflowStack AIHaystack
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KStack 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 · 6.3K1K10K100K1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KStack 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 · 6.3KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Free
Freemium
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Starting price
$39per month · free tier available
Free
Free tier
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Free tier
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Free trial
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–
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API access
–
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Plans
Developer FreePlus $39/moEnterprise Custom/mo
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Capabilities input → output
Input
CodeText
Text
DataDocumentsText
CodeDocuments
Output
Apps
Apps
Apps
Apps
Skill level
Advanced
Advanced
Intermediate
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
6
9
3
2
Agents
Agent creation
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LLM development
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No-code
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Workflows
–
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Developer tools
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Development
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Chatbots
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APIs
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–
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Agent testing
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 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.