How to Run Local AI Models in .NET Apps Using Ollama

Developers building ASP.NET Core applications can now run large language models locally using Ollama, avoiding dependence on cloud AI providers. Ollama is an open-source tool that manages model downloads, runtime, and HTTP APIs, making local AI integration straightforward for .NET developers. Running models locally addresses key concerns around data privacy, compliance, and rising API costs that emerge when AI moves beyond the proof-of-concept stage. Once installed, Ollama exposes a local HTTP endpoint that an ASP.NET Core app can communicate with much like any other HTTP service. Popular models such as Llama 3, Mistral, and CodeLlama can be pulled and run with simple command-line instructions before being wired into application logic.