Semantic Kernel vs Windmill vs Haystack vs Langflow

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

Your tool
Semantic Kernel
vs
Competitor 1
Windmill
Competitor 2
Haystack
Competitor 3
Langflow
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.
Remove
Competitor Windmill
windmill.dev
Windmill is an open-source, code-first orchestration platform for internal software.
Make main Remove
Competitor Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
Make main Remove
Competitor Langflow
langflow.org
Drag and drop AI
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
—
—
215.3Kvisits/mo
MoM change
—
—
—
▼ 0.7%
6-month growth
—
—
—
-4.9%
Global rank web
—
—
—
#217,191
Avg. last 3 months
—
—
—
225.2K
Bounce rate lower is better
—
—
—
44%
Pages / visit
—
—
—
2.2
Visit duration
—
—
—
1m 04s
Traffic sources
—
—
—
● Direct 76% · ● Referral 24%
Semantic KernelWindmillHaystackLangflow
073.8K147.7K221.5K295.3KLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3K100K1MLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
—
Freemium
—
Free
Starting price
—
$120per month · free tier available
—
Free
Free tier
–
–
Free trial
–
–
–
API access
–
Plans
—
Free and Open-source (self-host) FreeEnterprise $120/mo
—
—
Capabilities input → output
Input
CodeText
Code
CodeDocuments
Text
Output
Apps
Apps
Apps
Apps
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI Developer ToolsAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
4
4
5
9
Developer tools
Agents
–
Agent creation
–
LLM development
–
Workflows
–
–
No-code
–
–
–
Chatbots
–
–
–
Development
–
–
–
Self hosted
–
–
–
APIs
–
–
–
Agent memory
–
–
–
Workflow deployment
–
–
–
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
–
–
–
–

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.