Programming Free

Semantic Kernel

Open-source SDK for orchestrating AI agents, models, plugins, and memory

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PricingFree
Free planYes
Free trialYes
APIUnknown
Open sourceYes
DeploymentHybrid
Last verifiedAugust 3, 2026
Overview

Tool overview

Semantic Kernel is listed under Programming AI tools.

Summary

What is Semantic Kernel?

Semantic Kernel is Microsoft’s MIT-licensed SDK for building and orchestrating AI agents and multi-agent systems in C#, Python, and Java. It connects models, prompts, plugins, vector stores, telemetry, and enterprise services while Microsoft transitions users toward Agent Framework.

Best fit

Best for

Developers maintaining or building model-agnostic agent applications

Audience

Who is it for?

.NET developersPython developersJava developersEnterprise AI platform teams
Recommendation

Decision note

Rebuilt from the original export under the complete V412/V411 factual-source-verification workflow. Preview only. Apply remains blocked until Failures = 0, Warnings = 0, Unmapped = 0, Missing = 0; explicit clears are reviewed; image import is disabled or V380 accepts the asset; a representative WordPress edit screen is compared with the export and proposed row; and a post-Apply zero-change Preview succeeds.

Capabilities

Key features

Agent and multi-agent orchestration

Model and vector-store connectors

Native, OpenAPI, and MCP-style plugin workflows

C#, Python, and Java SDKs

Workflows

Use cases

Build enterprise AI assistants

Orchestrate multi-agent systems

Connect models to business functions

Add memory and retrieval to applications

Strengths

Pros

  • Free and MIT licensed
  • Supports multiple model providers
  • Runs in developer-controlled infrastructure
Considerations

Limitations

Semantic Kernel remains active but Microsoft Agent Framework 1.0 is now the recommended successor path.

Programming-language support is technical SDK support, not a human-language product claim.

Cost

Pricing details

Pricing modelFree
Free planYes
Free trialYes
Pricing context

Billing options

Free open-source softwareBring your own model and infrastructure costs
Pricing context

Pricing note

Semantic Kernel is free under the MIT License. Users pay separately for model providers, databases, hosting, and operational infrastructure.

View official pricing
Compatibility

Supported programming languages

  • English
Connectivity

Integrations

Azure OpenAI

OpenAI

Anthropic

Google

Amazon Bedrock

Mistral

Ollama

Vector stores

OpenAPI plugins

Specs

Technical details

PlatformsWeb
Multilingual supportYes
Login requiredNo
Open sourceYes
LicenseMIT
DeploymentHybrid
CompanyMicrosoft
Current version.NET 1.77.0 || Python 1.42.0
Models / versionsSemantic Kernel Microsoft Agent Framework migration path
Editions / plans.NET SDK Python SDK Java SDK
Data confidenceHigh
Last verifiedAugust 3, 2026
Documentation → Source code → Release notes → Data source →
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Answers

Frequently asked questions

Semantic Kernel is Microsoft’s MIT-licensed SDK for building and orchestrating AI agents and multi-agent systems in C#, Python, and Java. It connects models, prompts, plugins, vector stores, telemetry, and enterprise services while Microsoft transitions users toward Agent Framework.
Developers maintaining or building model-agnostic agent applications
The listed pricing model for Semantic Kernel is free. Pricing can change, so users should verify the latest plan details on the official website.
Yes. The current profile indicates that a free trial is available.
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