AI models

Models are the engines that power GPT for Work. Which model is the right one depends on your specific needs in terms of response quality, speed, privacy, and cost. GPT for Work supports models from OpenAI, Google, Anthropic, Perplexity, Mistral, DeepSeek, and OpenRouter, and open-source models through Ollama and other local servers with an OpenAI-compatible API.

The following table summarizes the different kinds of models available in GPT for Work from zero set up to more advanced options:

Use	Setup	When	Available for
Models without an API key	None. Use the default model or select a different model.	You want to get started quickly, using popular models: OpenAI gpt-4o is the default model. Other models are available in one click. ✅ Available models	Excel, Sheets, Word
Models with an API key 🔑	AI provider models: Set your own API key for an AI provider.	You want to benefit from the terms of service you have with an AI provider, such as cost, privacy, and rate limits. You want to use a model that is not available without an API key. You want more control. ✅ Available models	Excel, Sheets, Word, Docs
	OpenRouter models: Set your own API key for OpenRouter.	You want to access models from different providers without managing multiple API keys. You want to use models that are only available through OpenRouter. ✅ Available models	Excel
	OpenAI Assistants: Create an OpenAI Assistant and set your own OpenAI API key.	You need to add custom capabilities to a model. You want to upload your own files as knowledge for the AI.	Excel, Sheets
Local models	OpenAI-compatible models: Set up a local server and set the server URL in GPT for Work.	You want to use models available through a locally running LLM server such as LM Studio. You want to run models on a local machine. You do not want to send or receive any prompt or response data over the internet.	Excel, Word
	Ollama models: Set up an Ollama server and set the server URL in GPT for Work.	You want to use models available through Ollama. You want to run models on a local machine. You do not want to send or receive any prompt or response data over the internet. ✅ Available models	Excel, Word

What's next

Get started with the option that works best for you:

• Use models without an API key.

• Use models with an API key.

• Use OpenRouter models.

• Use OpenAI Assistants.

• Use OpenAI-compatible local models.

• Use Ollama models.