Open WebUI records 804,534 monthly visits with -2.8% month-over-month growth and Freemium pricing. Thinkstack.ai records 917 monthly visits with -47.4% growth and Freemium pricing.
Self-hosted AI workspace for local and cloud models
Build custom AI chatbots and agents trained on your own data
| Dimension / Metric | | |
|---|---|---|
| Official Domain | openwebui.com | app.thinkstack.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 804.53K (804,534) | 917 (917) |
| MoM Traffic Delta | -23.01K (-2.8%) | -828 (-47.4%) |
| Primary Market & Share | 🇺🇸 United States (24.5%) | 🇺🇸 United States (48.2%) |
| Direct Visits / mo | 299.84K | 367 |
| User Rating | 4.4 | 4.1 |
| 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.
Build custom AI chatbots and agents trained on your own data
Create fully functional AI agents in seconds from a visual, no-code interface without engineering help.
Connect multiple data sources so the bot answers from your own documents, help content, and websites.
Automate customer actions and build autonomous systems that require minimal human oversight.
Move complex chats to live agents and collect structured data through chat-based forms.
Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
SpecialistOpen-source workflow automation built for AI agents and technical teams
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.
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
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.
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.
AI customer service that answers instantly and turns chats into revenue
AI customer service that answers instantly and turns chats into revenue
SpecialistFocuses heavily on privacy-first document chat and local RAG pipelines, but offers fewer general-purpose chat UI features.
SpecialistFocuses heavily on privacy-first document chat and local RAG pipelines, but offers fewer general-purpose chat UI features.
Custom AI agents trained on your documentation and knowledge base
Custom AI agents trained on your documentation and knowledge base
Free / Open-sourceOffers robust multi-provider support and advanced user permission management, but has a slightly different configuration setup.
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.
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
SpecialistOpen-source AI automation that unifies agents, flows and 770+ app integrations
