Last Updated on March 2, 2026
If you are looking for a robust alternative to Microsoft Copilot that offers total control over your model selection, Msty (formerly Msty Studio) is a premier choice for hosting local LLMs. As an all-in-one AI powerhouse, Msty allows you to mix local and online models, build specialized assistants, and automate workflows—all within a single, private interface.
As a key component of the Local AI Infrastructure stack, Msty serves as a bridge between high-performance local inference and the flexible use of cloud models when needed. By pointing the GPTLocalhost Word Add-in to Msty’s local API, you can transform Microsoft Word into a private, secure drafting engine.
📖 Part of the Local AI Infrastructure Guide This post is a deep-dive cluster page within our Local AI Infrastructure Guide—your definitive roadmap to building a private, high-performance AI stack.
Why Choose Msty Studio for Your Local Stack?
Msty Studio excels at providing a seamless offline experience, ensuring that your data remains private and your workflows stay reliable regardless of your internet connection.
- Offline First: Msty Studio is designed to function 100% locally, protecting your sensitive data from external exposure.
- Model Flexibility: Easily toggle between various local LLMs (like Llama 3 or Mistral) or connect to popular online vendors for a hybrid setup.
- Zero Subscription Costs: By integrating Msty Studio with GPTLocalhost, you can bring generative power directly into Microsoft Word without recurring monthly fees.
The GPTLocalhost Integration
By using Msty Studio as your local host, you can point the GPTLocalhost to Msty’s local API. This enables a professional, private “Copilot” experience within Word. You gain the ability to summarize, draft, and refine documents using Msty’s managed models, all while maintaining complete data sovereignty.
Watch the demo below to see how Msty Studio provides inference results for GPTLocalhost directly inside Microsoft Word.
For more examples of using local LLMs in Microsoft Word without incurring inference fees, be sure to visit our YouTube channel at @GPTLocalhost!
Infrastructure in Action: The Local Advantage
Setting up your local AI infrastructure is the first step; the second is putting it to work. Running models locally via GPTLocalhost turns your infrastructure into a professional drafting tool with three key advantages:
- Data Sovereignty: Your sensitive documents never leave your local drive, ensuring 100% privacy and compliance.
- Hardware Optimization: Leverage the full power of your GPU or Apple Silicon for low-latency, high-performance drafting.
- Air-Gapped Reliability: Work anywhere—including high-security environments or even on a plane ✈️—with no internet required.