Ollama is a free tool for running open AI models on your own computer or server. You download it, pick a model, and chat with it or connect it to other software, without sending your prompts to a cloud AI service. It’s a popular starting point for private AI experiments. If you have been asking what is Ollama and what it is for, this is the short version.
What is Ollama and what does it do?
According to its GitHub page, Ollama lets you get up and running with open models, naming families such as Kimi, GLM, MiniMax, DeepSeek, gpt-oss, Qwen and Gemma. It supports macOS, Windows and Linux, and there’s an official Docker image. It’s released under the MIT licence.
It also exposes a local REST API at an address on your own machine, and offers official Python and JavaScript libraries, so developers can connect it to apps and workflows. The documentation describes API compatibility with OpenAI and Anthropic clients, a library of models for coding, vision, embeddings and reasoning, and integrations with apps and editors.
Local models or cloud models?
Ollama’s docs distinguish between the two. Local models run on your own computer after you download them. Cloud models let you run models without a local GPU. If privacy is your goal, check carefully which mode you are using, because cloud models are not running on your machine.
What do you need to run it?
A supported computer and enough memory for the model you pick. Larger models need more, and speed depends on your hardware. We haven’t quoted specific requirements because they vary by model, so check the model’s page in the Ollama library before downloading.
Who is Ollama good for?
- Developers and technical teams testing open models.
- Businesses exploring private AI for internal documents.
- People who want to build prototypes without per-use API fees.
What are its limits?
Open models you can run locally may not match the biggest cloud models on every task. You’re responsible for hardware, updates and security, and exposing the service to a network without protection is risky. For context, read what a private LLM is, then compare options in Ollama vs ChatGPT for business.
If you are still asking what is Ollama useful for in your business, start with a small pilot. We help businesses evaluate and set up private AI through our related services. Ask us if Ollama fits your needs.
Frequently Asked Questions
Is Ollama free?
The software is open source under the MIT licence. You still pay for the hardware and electricity, and any cloud models or services you choose to use may have their own terms.
Does Ollama need an internet connection?
You need one to download it and the models. After that, local models can run on your machine. Check your setup for any online features.
Which models can I run?
The Ollama library lists many open models, including the families named on its GitHub page. Availability and sizes change, so browse the current library.
Can I connect Ollama to my own apps?
Yes. It provides a local API and Python and JavaScript libraries, and works with tools that support compatible APIs.
Is Ollama safe for confidential data?
It can keep prompts on your machine, but safety depends on your configuration, access control and whether you use local or cloud models.