Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
#1ChartAI records 20,381 monthly visits with -47.2% month-over-month growth and Freemium pricing. Open WebUI records 804,534 monthly visits with -2.8% growth and Freemium pricing.

Chat with your data and get charts and diagrams in seconds
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | chartai.io | openwebui.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 20.38K (20,381) | 804.53K (804,534) |
| MoM Traffic Delta |
| -18.21K (-47.2%) |
| -23.01K (-2.8%) |
| Primary Market & Share | 🇺🇸 United States (12.7%) | 🇺🇸 United States (24.5%) |
|---|
| Direct Visits / mo | 8.24K | 299.84K |
|---|
| User Rating | 3.8 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

Chat with your data and get charts and diagrams in seconds
Describe the chart you want in plain language and receive a rendered visual, using a chat-style prompt instead of a chart configuration panel.
Go beyond charts to structured diagrams, so process flows and relationships can also be produced from a written description.
No installation or local setup is required — open the site, type your request and work from the generated output.
Produce an initial version of a visual quickly, which you can then refine or restyle rather than building from a blank canvas.

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.
Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
#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.
Chat with your data to get analysis, charts, reports, and slides

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

AI-powered visual collaboration for diagrams, mind maps, and charts
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
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.
Chat with your data to get analysis, charts, reports, and slides
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
AI-powered visual collaboration for diagrams, mind maps, and charts