Comparison
gpustack vs open-webui
Verdict
Pick gpustack when license: gpustack is Apache-2.0, open-webui is Other; pick open-webui when license: open-webui is Other, gpustack is Apache-2.0.
Markdown twin · gpustack alternatives · open-webui alternatives
GraphCanon updated today
vs
Trust & integrity
| Signal | gpustack | open-webui |
|---|---|---|
| Maintenance | Very active (1d since push) As of today · github_public_v1 | Very active (0d since push) As of today · github_public_v1 |
| Provenance | Not a fork · Organization account As of today · github_public_v1 | Not a fork · Organization account As of today · github_public_v1 |
| Security (OSV) | No lockfile As of today · none | No MCP manifest As of today · mcp_manifest |
Tagline
- gpustack
- A GPU cluster manager for high-performance AI model serving (vLLM, SGLang) and on-demand SSH-accessible GPU instances.
- open-webui
- User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
Stars
- gpustack
- 5.3k
- open-webui
- 145k
Forks
- gpustack
- 566
- open-webui
- 21k
Open issues
- gpustack
- 609
- open-webui
- 391
Language
- gpustack
- Python
- open-webui
- Python
Adopt for
- gpustack
- -
- open-webui
- Suitable for developers working with large language models who require a user-friendly interface and support for multiple APIs including Ollama and OpenAI.
Persona
- gpustack
- -
- open-webui
- -
Runtime
- gpustack
- -
- open-webui
- -
License
- gpustack
- Apache-2.0
- open-webui
- Other
Last pushed
- gpustack
- Jul 10, 2026
- open-webui
- Jul 10, 2026
Categories
- gpustack
- Inference & Serving, LLM Frameworks, Vector Databases
- open-webui
- Inference & Serving, LLM Frameworks
Trust and health
Days since push
- gpustack
- 1d
- open-webui
- 0d
Open issues (now)
- gpustack
- 609
- open-webui
- 391
Security scan
- gpustack
- No lockfile
- open-webui
- No MCP manifest
Full report
- gpustack
- Trust report
- open-webui
- Trust report
Choose gpustack if…
- License: gpustack is Apache-2.0, open-webui is Other.
- Tags unique to gpustack: ascend, cuda, deepseek, distributed-inference.
- Also covers Vector Databases.
When NOT to use gpustack
- Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic.
- LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves.
- Vector Databases: Don't reach for a dedicated vector DB under ~100k vectors; pgvector on your existing Postgres is simpler to operate.
Choose open-webui if…
- License: open-webui is Other, gpustack is Apache-2.0.
- Tags unique to open-webui: ai, llm, openai, self-hosted.
- When you need to integrate multiple AI services, such as Ollama and OpenAI, into a unified user interface.
When NOT to use open-webui
- When looking for tooling that exclusively supports APIs other than Ollama and OpenAI, as these are specific areas of focus for open-webui.
- If the requirement is a highly specialized interface tailored to specific tasks rather than a general AI interaction platform.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (gpustack/gpustack) · observed Jul 11, 2026
- GitHub forks (gpustack/gpustack) · observed Jul 11, 2026
- Last push (gpustack/gpustack) · observed Jul 10, 2026
- License file (Apache-2.0) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (open-webui/open-webui) · observed Jul 11, 2026
- GitHub forks (open-webui/open-webui) · observed Jul 11, 2026
- Last push (open-webui/open-webui) · observed Jul 10, 2026
- License file (Other) · observed Jul 11, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: gpustack 5.3k · open-webui 145k (synced Jul 11, 2026).
Common questions
- What is the difference between gpustack and open-webui?
- gpustack: A GPU cluster manager for high-performance AI model serving (vLLM, SGLang) and on-demand SSH-accessible GPU instances.. open-webui: User-friendly AI Interface (Supports Ollama, OpenAI API, ...). See the comparison table for live GitHub stats and shared categories.
- When should I choose gpustack over open-webui?
- Choose gpustack over open-webui when License: gpustack is Apache-2.0, open-webui is Other; Tags unique to gpustack: ascend, cuda, deepseek, distributed-inference; Also covers Vector Databases.
- When should I choose open-webui over gpustack?
- Choose open-webui over gpustack when License: open-webui is Other, gpustack is Apache-2.0; Tags unique to open-webui: ai, llm, openai, self-hosted; When you need to integrate multiple AI services, such as Ollama and OpenAI, into a unified user interface.
- When should I avoid gpustack?
- Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. Vector Databases: Don't reach for a dedicated vector DB under ~100k vectors; pgvector on your existing Postgres is simpler to operate.
- When should I avoid open-webui?
- When looking for tooling that exclusively supports APIs other than Ollama and OpenAI, as these are specific areas of focus for open-webui. If the requirement is a highly specialized interface tailored to specific tasks rather than a general AI interaction platform.
- Is gpustack or open-webui more popular on GitHub?
- open-webui has more GitHub stars (145,029 vs 5,301). Stars measure visibility, not whether either tool fits your constraints.
- Are gpustack and open-webui open source?
- Yes - both are open-source projects on GitHub (gpustack: Apache-2.0, open-webui: Other).
- Where can I find alternatives to gpustack or open-webui?
- GraphCanon lists graph-backed alternatives at gpustack alternatives and open-webui alternatives (gpustack markdown twin, open-webui markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, gpustack or open-webui?
- gpustack: Very active. open-webui: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for gpustack and open-webui?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: gpustack trust report; open-webui trust report.