Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
#1Nevermined records 0 monthly visits with 0% month-over-month growth and Freemium pricing. Open WebUI records 804,534 monthly visits with -2.8% growth and Freemium pricing.

Payments infrastructure that lets AI agents buy services autonomously within limits you set
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | nevermined.io | openwebui.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 0 (0) | 804.53K (804,534) |
| MoM Traffic Delta |
| 0 (0%) |
| -23.01K (-2.8%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (24.5%) |
|---|
| Direct Visits / mo | 0 | 299.84K |
|---|
| User Rating | 4.4 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

Payments infrastructure that lets AI agents buy services autonomously within limits you set
Set an amount, a purchase count and an expiry before an agent can pay. Every transaction is checked against the mandate, and only you can raise the limit.
A vetted catalog of paid AI services agents can buy per call, reachable through one integration rather than many separate vendor accounts.
Settles merchants over card, Visa agentic tokens or crypto rails, so agents pay inline without a checkout flow.
Stop an agent's ability to spend with one dashboard click or API call, with no grace period and no residual purchasing power.

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.

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

Identity, payments, and pay-per-use tools for AI agents
Free / Open-sourceActs as a local server supporting multiple modalities, but requires separate frontend configuration for chat interactions.
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.
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-sourceActs as a local server supporting multiple modalities, but requires separate frontend configuration for chat interactions.