Semantic Kernel vs Haystack vs Buildable 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
Buildable
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 Buildable
bldbl.dev
Buildable generates project plans for SaaS ideas and turns them into executable development tasks that stream directly to AI coding assistants through the Model Context Protocol
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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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1Kvisits/mo
3.4Mvisits/mo
MoM change
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—
▼ 63.0%
▲ 0.7%
6-month growth
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+65.1%
+21.0%
Global rank web
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#16,164,059
#13,384
Avg. last 3 months
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1.6K
3.3M
Bounce rate lower is better
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39%
42%
Pages / visit
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1.0
6.2
Visit duration
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5m 29s
Traffic sources
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● Direct 73% · ● Referral 24%
Semantic KernelHaystackBuildableLangChain
0850.7K1.7M2.6M3.4MBuildable · 2.1KBuildable · 1KBuildable · 628Buildable · 1.7KBuildable · 280Buildable · 1KBuildable · 2.8KBuildable · 1KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4M1001K10K100K1M10MBuildable · 2.1KBuildable · 1KBuildable · 628Buildable · 1.7KBuildable · 280Buildable · 1KBuildable · 2.8KBuildable · 1KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
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Free Trial
Freemium
Starting price
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$15per month
$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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Pro $15/moTeam $29/user/mo
Developer FreePlus $39/moEnterprise Custom/mo
Capabilities input → output
Input
CodeText
CodeDocuments
Text
CodeText
Output
Apps
Apps
CodeText
Apps
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
4
5
7
6
Developer tools
Agent creation
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Agents
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LLM development
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Project planning
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Development
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Idea development project planning
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Agent memory
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Agent testing
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GitHub management
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Kanban management
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Project management
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Project specifications
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
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▲ 0
▲ 1
Saves
0
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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.