Semantic Kernel vs Haystack vs LlamaIndex vs LangChain

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

Your tool
Semantic Kernel
vs
Competitor 1
Haystack
Competitor 2
LlamaIndex
Competitor 3
LangChain
Compare
4 tools · best value per row highlighted
Your tool Semantic Kernel
learn.microsoft.com
Semantic Kernel is a lightweight, open-source development kit from Microsoft for building AI agents and adding AI models to existing C#, Python or Java codebases.
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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 LlamaIndex
llamaindex.ai
Connect AI to your data
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Competitor LangChain
langchain.com
Framework for building with large language models
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Traffic estimated monthly website traffic
Monthly visits
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324Kvisits/mo
3.4Mvisits/mo
MoM change
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▼ 21.0%
▲ 0.7%
6-month growth
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-29.5%
+21.0%
Global rank web
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#118,014
#13,384
Avg. last 3 months
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398.3K
3.3M
Bounce rate lower is better
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46%
42%
Pages / visit
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2.8
6.2
Visit duration
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1m 57s
5m 29s
Traffic sources
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● Direct 74% · ● Referral 20%
● Direct 73% · ● Referral 24%
Semantic KernelHaystackLlamaIndexLangChain
0850.7K1.7M2.6M3.4MLlamaIndex · 438.2KLlamaIndex · 470.7KLlamaIndex · 444KLlamaIndex · 423.8KLlamaIndex · 459.5KLlamaIndex · 421.3KLlamaIndex · 455KLlamaIndex · 461KLlamaIndex · 410KLlamaIndex · 324KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4M100K1M10MLlamaIndex · 438.2KLlamaIndex · 470.7KLlamaIndex · 444KLlamaIndex · 423.8KLlamaIndex · 459.5KLlamaIndex · 421.3KLlamaIndex · 455KLlamaIndex · 461KLlamaIndex · 410KLlamaIndex · 324KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
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Freemium
Freemium
Starting price
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Free tier
$39per month · free tier available
Free tier
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Free trial
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API access
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Plans
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Free FreeStarter Custom/moPro Custom/moEnterprise Custom/mo
Developer FreePlus $39/moEnterprise Custom/mo
Capabilities input → output
Input
CodeText
CodeDocuments
DocumentsImages
CodeText
Output
Apps
Apps
DataText
Apps
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 3 shared · core   partial
Tasks covered
4
5
12
6
Agents
LLM development
Developer tools
Agent creation
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Development
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Data extraction
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Document data extraction
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Document processing
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OCR
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Text extraction
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Agent memory
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Agent testing
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Information retrieval
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Medical data extraction
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Workflows
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
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▲ 1
Saves
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Reviews
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Prompts
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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.