Ollama
Open SourceSelf-hostableRun open LLMs locally with a single command.
4.9175K starsAlternative to ChatGPT, Claude
Overview
Ollama is a free, open-source tool and a self-hostable alternative to ChatGPT, Claude. It's licensed under MIT and written in Go.
Ollama is the simplest way to download, run, and serve open large language models — Llama, DeepSeek, Qwen, Gemma, Mistral, and more — on your own machine. One `ollama run` command pulls a model and starts a chat, while a built-in OpenAI-compatible API lets your apps talk to local models with no cloud, no API keys, and no data leaving your hardware.
Why pick Ollama over ChatGPT
- Own your data instead of trusting ChatGPT's servers
- No per-seat pricing — grow without ballooning costs
- Ollama is open source: audit it, fork it, extend it
- Self-host for full privacy and compliance control
Key features
- One-command model download and run (e.g. `ollama run llama3.3`)
- Built-in OpenAI-compatible REST API for local apps
- Runs open models — Llama, DeepSeek, Qwen, Gemma, Mistral — on CPU or GPU
- GPU acceleration on NVIDIA, AMD, and Apple Silicon
- Custom models and prompts via Modelfiles, plus a large model library
Pros & cons
Screenshots
Installation
Install on macOS / Linux
curl -fsSL https://ollama.com/install.sh | shPull and run a model
ollama run llama3.3Frequently asked questions
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