Ollama vs OpenLLM
A side-by-side comparison of two self-hosted local llm runners options — licensing, setup difficulty, resource needs, and what each one replaces.
Ollama
Run large language models locally with a simple CLI and API
VS
OpenLLM
Run any open LLM as an OpenAI-compatible API endpoint
| Feature | Ollama | OpenLLM |
|---|---|---|
| Deploy effort | ≈5-minute setup | Under-an-hour setup |
| Health score | 100 · Excellent | 81 · Excellent |
| Category | Local LLM Runners | Local LLM Runners |
| License | MIT | Apache-2.0 |
| Language | Go | Python |
| Setup difficulty | Easy | Medium |
| Min. RAM | 8,192 MB | 8,192 MB |
| Deployment | docker, binary, bare-metal | docker, kubernetes, bare-metal |
| GitHub stars | ★ 181,557 | ★ 12,547 |
| First released | 2023 | 2023 |
| Replaces | ChatGPT, OpenAI API | OpenAI API |
What are Ollama and OpenLLM?
Ollama
Ollama lets you download, run, and manage open large language models such as Llama, Mistral, Gemma, and Qwen on your own machine. It provides a simple command line interface and a built-in REST API so other tools can use local models.
- One-command model downloads
- OpenAI-compatible API
- GPU and CPU support
- Modelfile customization
OpenLLM
OpenLLM lets developers run open-source large language models as OpenAI-compatible API endpoints with a single command. It is built on BentoML and supports streaming, quantization, and easy deployment.
- One-command model serving
- OpenAI-compatible API
- Built-in chat UI
- Cloud deployment via BentoML
Ollama vs OpenLLM: key differences
Ollama is written in Go, while OpenLLM is built with Python. Licensing differs — MIT for Ollama versus Apache-2.0 for OpenLLM. Ollama has the considerably larger community, at 181,557 GitHub stars versus 12,547.
Why pick each one
Choose Ollama if…
- Extremely easy to set up
- Large model library
Watch out for
- Limited fine-grained inference tuning
Choose OpenLLM if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Mature project with 12.5k GitHub stars
Frequently asked questions
Is Ollama or OpenLLM better?
Ollama is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider OpenLLM if its specific feature set fits your needs better.
Are Ollama and OpenLLM free and open-source?
Yes. Ollama is licensed under MIT and OpenLLM under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Ollama and OpenLLM with Docker?
Ollama: yes. OpenLLM: yes.