Overview
Ollama lets you download and run LLMs such as Llama 3.3, DeepSeek-R1, Phi-4, and Gemma 3 on your own hardware with a single command. It exposes an OpenAI-compatible REST API so existing tools integrate without modification. GPU acceleration is supported on NVIDIA, AMD, and Apple Silicon. Distributed as a native binary and Docker image, setup requires no manual dependency management.
Where it falls short of OpenAI API
- No built-in chat UI; requires a separate front-end like Open-WebUI
- Fine-tuning and model training are not supported; inference only
- Multi-GPU distributed inference is limited compared to commercial inference APIs
- No built-in authentication, rate-limiting, or multi-tenant access control
We list the gaps honestly so you can decide if the trade-off is worth owning your data.
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