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Generative AI reached mainstream adoption with ChatGPT in late 2022, prompting Microsoft to launch Azure OpenAI Service and developer tools like Semantic Kernel and Microsoft Extensions for AI. The article explains foundational AI concepts including tokens, embeddings, parameters, prompts, and RAG (Retrieval-Augmented Generation). It covers the .NET AI ecosystem spanning GitHub Models for prototyping, Microsoft Foundry for enterprise production, Foundry Local for offline environments, and Ollama for local runtimes. Microsoft Extensions for AI provides unified abstractions like IChatClient that work across all providers, enabling developers to switch between models and platforms without code changes.

Generative AI with Large Language Models in C# in 2026

Model management in the .NET Ecosystem Copy link

Bringing It All Together: A Unified Abstraction Copy link