Free / Open-sourceRun and build with open AI models locally or in the cloud
#1Open WebUI records 804,534 monthly visits with -2.8% month-over-month growth and Freemium pricing. OpenLIT records 6,028 monthly visits with -18.3% growth and Free pricing.

Open-source, OpenTelemetry-native observability and harness engineering for AI agents
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | openwebui.com | openlit.io |
| Pricing Model | Freemium | Free |
| Monthly Visits | 804.53K (804,534) | 6.03K (6,028) |
| MoM Traffic Delta |
| -23.01K (-2.8%) |
| -1.35K (-18.3%) |
| Primary Market & Share | 🇺🇸 United States (24.5%) | 🇺🇸 United States (53.6%) |
|---|
| Direct Visits / mo | 299.84K | 2.38K |
|---|
| User Rating | 4.4 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|

Self-hosted AI workspace for local and cloud models
Connect local runtimes like Ollama alongside OpenAI-compatible and Anthropic APIs, and switch between them inside one interface.
RAG over your own documents, web search and citation-aware answers come standard, so responses are grounded in real sources.
Extend the platform with Python code to add custom tooling, preprocessing, and multi-step pipelines, then share them with others.
SSO, RBAC, audit logs, data residency, and on-premises, hybrid or air-gapped deployment for organisations with strict requirements.

Open-source, OpenTelemetry-native observability and harness engineering for AI agents
Capture OpenTelemetry traces and metrics for every LLM call, tool invocation, retrieval, and agent step, and filter them by user, session, cost, latency, or custom metadata.
Score production traffic or experiments with LLM-as-a-judge, heuristic checks, or human review so you can measure accuracy, relevance, and safety over time.
Manage and version prompts in Prompt Hub, then deploy, roll back, and update prompts without shipping new application code.
Store and rotate OpenAI, Anthropic, and other LLM API keys outside your codebase with an encrypted, rotating secrets vault.
Free / Open-sourceRun and build with open AI models locally or in the cloud
#1SpecialistOpen-source workflow automation built for AI agents and technical teams
SpecialistA free, open-source personal AI agent that learns your projects and works across every messaging app.
#3
SpecialistOpen-source personal AI assistant that runs on your own machine and works from chat apps

SpecialistSpecializes in visual workflow building and RAG pipelines rather than serving purely as a chat interface.

Free / Open-sourceFocuses on collaborative team AI workspaces and plugins, but shares similar open-source architectural goals.

Free / Open-sourceOne open-source AI gateway for 100+ LLM providers
SpecialistFocuses heavily on privacy-first document chat and local RAG pipelines, but offers fewer general-purpose chat UI features.

Free / Open-sourceOffers robust multi-provider support and advanced user permission management, but has a slightly different configuration setup.
Free / Open-sourceDelivers a desktop-native application for running local models offline easily, but lacks Open WebUI's server-centric multi-user features.
SpecialistOpen-source AI automation that unifies agents, flows and 770+ app integrations

Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI

Free / Open-sourceRun and build with open AI models locally or in the cloud
SpecialistOpen-source workflow automation built for AI agents and technical teams
SpecialistA free, open-source personal AI agent that learns your projects and works across every messaging app.
SpecialistOpen-source personal AI assistant that runs on your own machine and works from chat apps
SpecialistSpecializes in visual workflow building and RAG pipelines rather than serving purely as a chat interface.
SpecialistFocuses heavily on privacy-first document chat and local RAG pipelines, but offers fewer general-purpose chat UI features.
Free / Open-sourceOffers robust multi-provider support and advanced user permission management, but has a slightly different configuration setup.
Free / Open-sourceDelivers a desktop-native application for running local models offline easily, but lacks Open WebUI's server-centric multi-user features.
SpecialistOpen-source AI automation that unifies agents, flows and 770+ app integrations
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI