AI utilities
Libraries for machine learning and LLM integration in C#, plus AI coding assistants that work with any language.
The AI ecosystem changes quickly. Check each project's repository for current maintenance status and versions before adopting.
Machine learning
ML.NET
Microsoft's open-source ML framework for training and consuming models in .NET.
LLM orchestration
Semantic Kernel verify
Microsoft's SDK for building agents and plugins over LLMs.
Abstractions
Microsoft.Extensions.AI verify
Common interfaces (IChatClient, embeddings) so you can swap model providers.
Inference
ONNX Runtime
Run exported models with CPU, GPU or DirectML acceleration.
Deep learning
TorchSharp
.NET bindings to the libtorch engine that powers PyTorch.
LLM APIs
Official OpenAI / Anthropic .NET SDKs verify
Check each provider's documentation for current official .NET SDK status.
AI-assisted development
Agentic coding
Claude Code
Anthropic's coding agent for the terminal, IDEs, desktop and web.
Completion & chat
GitHub Copilot
In-editor suggestions and chat across many IDEs.
AI editor
Cursor
A VS Code-based editor built around AI assistance.
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