Semantic Kernel
agent-frameworks
Microsoft's enterprise SDK for orchestrating LLMs, plugins, and agents.
Pricing
Free
Rating
—
Votes
0
Head-to-head comparison
Semantic Kernel vs Mastra
Compare Semantic Kernel and Mastra side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.
Mastra
agent-frameworks
The TypeScript framework for building AI agents and workflows.
Pricing
Free plan
Rating
—
Votes
0
Feature comparison
Feature
Semantic Kernel
Mastra
Category
agent-frameworks
agent-frameworks
Pricing
Free
Free plan
Free plan
API access
Mobile app
Browser extension
Team collaboration
Custom training
Self-hosted option
Offline mode
Multi-language support
Semantic Kernel pros and cons
First-class C#/.NET support, rare among AI frameworks
Free and open source
Enterprise features: type safety, DI, telemetry
Multi-language (C#, Python, Java)
Strategic focus shifting to Microsoft Agent Framework
Concepts like planners have changed across versions
Python support historically trailed .NET
Mastra pros and cons
TypeScript-native, rare among serious agent frameworks
Open source and free to self-host
Ergonomic agents, workflows, memory, and evals in one toolkit
Strong funding and momentum (22k+ GitHub stars)
Young project with a still-maturing ecosystem
APIs may change as it evolves toward stability
Fewer integrations than older Python frameworks
Which one should you choose?
Best overall signal
Semantic Kernel
Selected using Toolglade popularity signals such as views and votes.
Best value signal
Semantic Kernel
Selected using free-plan availability and engagement signals.
Best for
Semantic Kernel
- enterprise .NET AI apps
- plugin and tool orchestration
- LLM integration in existing systems
- agent building on Microsoft stacks
- Enterprise .NET development teams
Mastra
- TypeScript agent development
- full-stack JS AI apps
- typed agent workflows
- RAG in Node.js
- TypeScript and full-stack JavaScript teams
FAQ
Is Semantic Kernel better than Mastra?
It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.
Which tool has a free plan?
Semantic Kernel and Mastra offer a free plan based on current Toolglade data.
Where can I find alternatives?
View Semantic Kernel alternatives or view Mastra alternatives.