OSS ChatGPT WebUI v4 – Projects, Agent Profiles, Server Tools, Publishing

The self-hosted, OpenAI-compatible AI gateway llms.py released version 4 on July 20, 2026, adding projects, agent profiles, server tools, and publishing capabilities. The update supports 530+ models from 24 providers and introduces an extensions system, Gemini file search, and credential authentication.

llms.py The self-hosted, OpenAI-compatible AI gateway for text, image & audio — a lightweight CLI, server and OSS Open WebUI alternative for Local and Cloud LLMs July 20, 2026 - v4 Released → /docs/latest One tool, every modality Generate Anything From a single self-hosted gateway — chat with 530+ models, create images, and synthesize speech across 24 providers Text & Chat /docs/features/chat-ui A fast, private, ChatGPT-like web UI over every local & cloud LLM — with tools, MCP, skills, agents and 200+ system prompts Image Generation /docs/media-generation/image-generation Create images via Gemini, OpenAI, OpenRouter, Chutes, Z.ai & Nvidia — right inside the chat and gallery workflow Audio & Speech /docs/media-generation/audio-generation High-quality text-to-speech with Gemini & OpenRouter models, plus voice-to-text input via the microphone Create → Publish → Showcase Your Creations, in the Public Gallery Anything you generate in llms.py can be published with one click — landing in the live showcase at ai.llmspy.org https://ai.llmspy.org , browsable by everyone with categories, tags, ratings and infinite scroll. - Browse generated images & audio by category and tag - Play full Projects built by AI projects-built — games and apps, ready to run - Free & anonymous publisher account — no email required Playable & self-contained Projects Built by AI Complete, self-contained apps & games — generated with llms.py and published for anyone to open and play Quick Install pip install llms-py 💬 Simple Chat Ask questions directly from the command line Run Server llms --serve 8000 Beautiful Themes Personalize your experience with a selection of handcrafted themes /docs/features/themes 💬 ChatGPT-like Interface Modern, fast, and privacy-focused web UI for all your local and remote LLMs What's New Latest release focused on extensibility, expanded provider support, and enhanced user experience 530+ Models from 24 Providers /docs/v3 switch-to-modelsdev-provider-model-configuration Powered by models.dev integration with automatic daily updates Extensions System /docs/extensions Add features, providers, and customize the UI with flexible plugins Gemini File Search /docs/extensions/gemini RAG workflows with document stores, categories, and contextual chat Credentials Auth /docs/authentication/credentials Username/Password authentication with Admin UI and CLI user management Agent Profiles /docs/features/agents Specialized AI agents with custom prompts, tools, themes, and Planner→Coder workflows Projects /docs/features/projects Secure workspace isolation that restricts AI agent filesystem access to designated project folders Tool Support /docs/extensions/tools First-class Python function calling for LLM interactions with your environment Server Tools /docs/features/server-tools Built-in support for provider hosted Anthropic & OpenRouter server tools like web search MCP Support /docs/mcp/fast mcp Connect to Model Context Protocol servers for extended tool capabilities Skills Support /docs/extensions/skills Extend AI capabilities with specialized knowledge, workflows, and tools Agent Browser /docs/features/browser AI-powered browser automation with live preview, script editor, and element inspector Themes /docs/features/themes Customize the look and feel with built-in themes or create your own Calculator & Run Code UIs /docs/features/calculator-ui Beautiful UIs to evaluate math and execute Python, JS, TS & C code Media Gallery /docs/media-generation/media-gallery Browse and manage all your generated images and audio in one place Voice Input /docs/features/voice-input Voice-to-text transcription via microphone button or ALT+D keyboard shortcut Image Generation /docs/media-generation/image-generation Built-in support for Gemini, OpenAI, OpenRouter, Chutes, Z.ai and Nvidia Audio Generation /docs/media-generation/audio-generation TTS support for Gemini 2.5 Flash/Pro Preview models KaTeX Math Rendering /docs/features/katex Beautiful LaTeX math typesetting for equations and formulas Model Selector Smart search, advanced filtering, sorting, and favorites over 530 models from 24 providers Learn more → /docs/features/model-selector Credentials Auth Built-in Username/Password authentication with a Sign In page, Admin Web UI and CLI for user managing accounts, roles, and account locking Learn more → /docs/authentication/credentials Agent Profiles & Projects Configure specialized AI agents with custom prompts, tools, and themes — and scope their filesystem access to secure project workspaces Gemini File Search & RAG Build knowledge bases with document stores and contextual AI chat Learn more → /docs/extensions/gemini Server Tools Built-in support for provider-hosted OpenRouter & Anthropic server tools like web search, web fetch & code execution Learn more → /docs/features/server-tools Agent Browser An integrated workspace for building and running automated browser scripts with AI assistance, live previews, and an interactive element inspector Learn more → /docs/features/browser Image & Audio Generation Seamless media generation through UI and CLI Runtime Provider Management Enable or disable providers on the fly without configuration changes Learn more → /docs/configuration Ready to Get Started? Install llms.py and start chatting with 530+ AI models in minutes