Semantic Kernel

MIT SDK for integrating LLMs into C#, Python and Java apps

What Semantic Kernel does

  • MIT SDK for integrating LLMs into C#, Python and Java apps
  • Plugins, planners and memory connectors
  • Works with OpenAI, Azure and local models

Semantic Kernel — straight answers

What is Semantic Kernel?

Semantic Kernel is listed under Agent Frameworks (Developers), in the AI Agents & Automation category on Flocci AI Tools. MIT SDK for integrating LLMs into C#, Python and Java apps. It is free, with no paid plan attached, and it lives at github.com.

Is Semantic Kernel free?

Semantic Kernel is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 399 entries on Flocci AI Tools with no upgrade path built in.

What can Semantic Kernel do?

Semantic Kernel does 3 things the catalog singles out: Mit sdk for integrating llms into c#, python and java apps; plugins, planners and memory connectors; works with openai, azure and local models.

What is the best free alternative to Semantic Kernel?

Agno is the closest free alternative: it sits in the same Agent Frameworks (Developers) sub-category and is free. AWS Strands Agents, CAMEL and Claude Agent SDK also start free. The full list is on the alternatives page.

See the full list →

Semantic Kernel alternatives

Compare all alternatives →

LangGraph

Agent Frameworks (Developers)
free
  • Build stateful, multi-agent apps as graphs
  • Human-in-the-loop and durable execution
  • Works with any LLM
  • Open-source with a hosted platform

CrewAI

Agent Frameworks (Developers)
freemium
  • Role-based multi-agent 'crews'
  • Simple Python API for collaboration
  • Tasks, tools and flows
  • Open-source core

OpenAI Agents SDK

Agent Frameworks (Developers)
free
  • Lightweight agent orchestration from OpenAI
  • Agent handoffs, guardrails and tracing
  • Tool and function calling built in
  • Open-source, pay only for model usage

Microsoft AutoGen

Agent Frameworks (Developers)
free
  • Multi-agent conversation framework
  • Event-driven, async agent design
  • Studio UI for prototyping
  • Fully open-source

LlamaIndex

Agent Frameworks (Developers)
freemium
  • Leading framework for RAG and data agents
  • Connect LLMs to your documents & APIs
  • Agentic document workflows
  • Open-source with a hosted cloud

Google Agent Development Kit (ADK)

Agent Frameworks (Developers)
free
  • Open-source Python/Java framework from Google for building multi-agent systems
  • Native integration with Vertex AI Agent Engine and Gemini models
  • Model-agnostic — works with non-Google LLMs via LiteLLM

Head-to-head comparisons