Haystack vs Flowise vs OpenAI Agents SDK vs Semantic Kernel

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

Your tool
Haystack
vs
Competitor 1
Flowise
Competitor 2
OAOpenAI Agents SDK
Competitor 3
Semantic Kernel
Compare
4 tools · best value per row highlighted
Your tool 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 Flowise
flowiseai.com
No-code AI workflows
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Competitor OAOpenAI Agents SDK
openai.github.io
The OpenAI Agents SDK is a Python package for building agentic applications with very few abstractions.
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Competitor 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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Traffic estimated monthly website traffic
Monthly visits
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168.3Kvisits/mo
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MoM change
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▼ 27.6%
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6-month growth
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-14.1%
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Global rank web
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#239,649
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Avg. last 3 months
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203.8K
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Bounce rate lower is better
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43%
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Pages / visit
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2.8
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Visit duration
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1m 23s
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Traffic sources
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● Direct 79% · ● Referral 19%
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HaystackFlowiseOpenAI Agents SDKSemantic Kernel
063.6K127.2K190.8K254.4KFlowise · 254.4KFlowise · 249KFlowise · 240.1KFlowise · 195.9KFlowise · 226.4KFlowise · 223.8KFlowise · 210.5KFlowise · 232.5KFlowise · 168.3K100K1MFlowise · 254.4KFlowise · 249KFlowise · 240.1KFlowise · 195.9KFlowise · 226.4KFlowise · 223.8KFlowise · 210.5KFlowise · 232.5KFlowise · 168.3KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
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Freemium
Free
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Starting price
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$35per month · free tier available
Free
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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 $35/moPro $65/mo
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Capabilities input → output
Input
CodeDocuments
DocumentsText
AudioCodeText
CodeText
Output
Apps
Apps
AppsAudio
Apps
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
5
10
5
4
Agent creation
Agents
Developer tools
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LLM development
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Agent collaboration
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No-code
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Workflows
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Chatbot building
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Chatbots
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Agent memory
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Chatbot integration
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Development
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Voice agents
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Workflow deployment
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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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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.