GPTLocalhost

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GPTLocalhost is a Data & Analytics tool that allows users to run local GPT models directly within Microsoft Word. It offers strong data privacy and offline capabilities by processing all AI tasks on your own machine.

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At a glance

Pricing

Freemium · Paid

Free tier

Yes

API

Skill level

Technical

About

What is GPTLocalhost?

GPTLocalhost enables users to integrate and run local GPT models directly within Microsoft Word, ensuring complete data privacy as documents never leave the user's device. This local-first approach provides offline capability and full control over models and updates, without requiring a Microsoft 365 Copilot subscription. It supports any LLM server compatible with the OpenAI Chat API, including popular open-source models like LLaMA-family, Mistral, and Falcon. Users can also connect their own local or self-hosted models. The add-in is designed to work securely within Microsoft Word's security model, using a local certificate for encrypted communication. It can function as a direct alternative to Microsoft Copilot or work alongside it, and also supports connecting to cloud LLMs via an LLM Proxy for cost-effective, token-based usage.

Best used for

Ideal for developers and data scientists who need to perform AI-driven document processing directly within Microsoft Word, ensuring complete data privacy and offline functionality. Especially valuable for tasks like contract analysis, automatic markdown conversion, and integrating various local or cloud LLMs for enhanced control and cost-effectiveness.

Common actions

run local LLMs

process documents privately

integrate AI with Word

analyze contracts

convert formats

Capabilities

Key features

Local GPT in Word
Offline capability
Supports OpenAI Chat API
Connects local/self-hosted models
Secure local HTTPS connection
Cloud LLM integration
Seamless model switching

Target Audience

developerdata scientistproduct managersmall business owner

Integrations

anythingllmlitellmlm-studioollamallama.cpplocalaikoboldcppxinference+ 1 more

Pricing & Plans

Freemium · Paid

Free

FAQs

Does GPTLocalhost ensure my document content remains private?

Yes, GPTLocalhost is designed to be local-first. All AI processing runs on your own machine using local LLMs, meaning your documents never leave your device. No content is sent to external servers or the cloud, ensuring strong data privacy.

Which local AI models are compatible with GPTLocalhost?

GPTLocalhost works with any LLM server compatible with the OpenAI Chat API. This includes popular open-source models like LLaMA-family, Mistral, and Falcon. You can also connect your own local or self-hosted models by pointing GPTLocalhost to your inference endpoint.

Can GPTLocalhost be used offline or in air-gapped environments?

Yes, the add-in is designed to run entirely on your local machine using local LLMs. After initial login, it functions completely offline and can be deployed in fully air-gapped environments without any internet connection or data leaving your device.

Does GPTLocalhost replace Microsoft Copilot or work alongside it?

GPTLocalhost functions as a direct alternative to Microsoft Copilot in Word, offering a private, local GPT experience. However, it is developed to work alongside Copilot, allowing users to utilize both tools based on their specific privacy or feature needs.

Why do I need a local certificate to run GPTLocalhost?

Microsoft Word requires all add-ins to communicate over a secure HTTPS connection. Since GPTLocalhost runs locally, it uses a self-signed local certificate to meet this requirement. The installer automatically handles its creation and trust setup.

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