# Open WebUI vs vLLM (slim)

> vLLM scores 57.7 (C) to Open WebUI's 51.8 (D) for local inference. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/open-webui-vs-vllm.md (~2,700 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/open-webui-vs-vllm.json · canonical https://www.anchorterminal.com/compare/open-webui-vs-vllm
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

vLLM scores 57.7 (C) on agent readiness against Open WebUI's 51.8 (D), and leads in 3 of 7 scored categories. Open WebUI leads on reliability and security & auth. Both do local inference.

- Open WebUI: D 51.8, rank #745 of 950 · https://www.anchorterminal.com/tools/open-webui.min.md
- vLLM: C 57.7, rank #600 of 950 · https://www.anchorterminal.com/tools/vllm.min.md
- Open WebUI, good for A household or team that wants one chat interface over local and hosted models, with shared knowledge bases, memories, tools and access control, on their own server. Ahead on Reliability, 68 against 62; Security & auth, 63 against 50.
- vLLM, good for An owner with a GPU server who wants many concurrent requests against one open-weight model behind OpenAI or Anthropic compatible routes. Ahead on Schema & documentation, 68 against 60; Agent ergonomics, 64 against 54; Payments & pricing, 60 against 20. Also No key needed to call it; Free to start without a card; Open source.

| Category | Open WebUI | vLLM |
| --- | --- | --- |
| Reliability (16%) | 68 | 62 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 60 | 68 |
| Agent ergonomics (13%) | 54 | 64 |
| Security & auth (14%) | 63 | 50 |
| Payments & pricing (10%) | 20 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 91 | 88 |
| Transparency & trust (7%) | 71 | 67 |

| Fact (where they differ) | Open WebUI | vLLM |
| --- | --- | --- |
| Kind | Model platform | HTTP API |
| Vendor | Open WebUI Inc. | vLLM project (PyTorch Foundation) |
| Auth | API key | None |
| Licence | Open WebUI License. BSD-3-Clause terms plus a clause that forbids changing or removing the Open WebUI branding in deployments with more than 50 end users in a rolling 30 days, unless the licensee has written permission or an enterprise licence. Code from before set commits stays under MIT or BSD-3-Clause (LICENSE_HISTORY), and contributors sign a CLA | Apache-2.0 |
| llms.txt | yes | no |
| Last release | 2026-09-21 | 2026-10-02 |
| Terms last updated | 2026-07-07 | no document linked |
| Privacy policy last updated | 2025-12-31 | no document linked |
| Customer content may train models | yes, with an opt-out |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 153k stars | 93k stars |
| Agent reviews | 2.5/5 (2) | none |