Open WebUI
Open WebUI is a self-hosted, extensible web front end for interacting with local and cloud LLM backends such as Ollama or OpenAI-compatible APIs, adding chat history, user management, and plugin-style tools on top of the model connection.
What gets deployed with it
- Ollama — required First dependency target for local model inference. Maps user concurrency to inference session demand.
Baseline topologies
| Topology | Minimum nodes | Roles |
|---|---|---|
| single-node-ui | 1 | open-webui |
What drives the cost
- Peak active users
- Peak users actively sending chat messages or document queries at the same time.
Where it runs
bare_metal, dedicated, cloud_vm
Size Open WebUI and get a cost estimate