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Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active.
https://librechat.ai/
aianthropicartifactsawsazurechatgptchatgpt-cloneclaudeclonedeepseekgeminigooglegpt-5librechatmcpo1openairesponses-apivisionwebui
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* 🧰 fix: Flatten union schemas for Gemini/Vertex MCP tool compatibility `@langchain/google-common`'s `zod_to_gemini_parameters` throws "Gemini cannot handle union types" on any genuine `anyOf`/`oneOf` (e.g. discriminated unions), so MCP tools shipping union-typed schemas crash on the Google endpoint while working fine on OpenAI/Claude. Add `flattenJsonSchemaUnions` (packages/api) to collapse unions to their first non-null member and multi-entry `type` arrays to a single nullable type, and apply it in `createToolInstance`'s existing `isGoogle` branch so only the Google/Vertex path is affected. Lossy by design, mirroring the existing empty-object fallback. Closes #13612 * 🩹 fix: Address Codex review — preserve fields, strip null enums, cover definitions path - Preserve parent-level `properties`/`required` when collapsing a union: merge the chosen branch into the parent instead of overwriting, so args declared outside the union (e.g. always-required fields) still reach Gemini. - Drop the `null` member from `enum` when a union/type-array makes a field nullable, keeping Gemini's required homogeneous-enum invariant. - Propagate the Google-flattened schema to the definitions/deferred-tool path: thread `provider` into `loadToolDefinitions` and flatten there, and store the flattened schema on `mcpJsonSchema` so `extractMCPToolDefinition` no longer emits raw unions on Google/Vertex. * 🎨 style: Sort imports in tools/definitions per import-order check * ♊ feat: Broaden union flatten into a full Gemini schema sanitizer The union flatten alone wasn't enough — real GitHub MCP tools on Gemini also 400 with `Invalid value ... (TYPE_STRING), true`, because Gemini's function-calling Schema (https://ai.google.dev/api/caching#Schema) accepts only a restricted JSON Schema subset, and `enum` is `Type.STRING`-only. Rename `flattenJsonSchemaUnions` → `sanitizeGeminiSchema` and broaden it (one pass, Gemini-gated) to cover the documented subset: - Keep only string `enum` values; drop the keyword for non-string types (fixes the reported boolean-enum 400, incl. boolean `const` normalized to `enum: [true]`). - `const` → single-value string enum, or drop if non-string. - Merge `allOf` intersections; fold `exclusiveMinimum`/`exclusiveMaximum` into `minimum`/`maximum`. - Strip unsupported keywords: `additionalProperties`, `default`, `$schema`, `$id`. - (Existing) collapse `anyOf`/`oneOf`, multi-entry `type` arrays, nullable. Grounded in Google's Schema docs rather than reverse-engineered from 400s. Verified end-to-end against the real `@langchain/google-common` converter. Complements danny-avila/agents#232 (langchain bump), which defers schema flattening to LibreChat. * 🩹 fix: Gate enum retention on the effective (collapsed) type Codex review: a mixed-type enum like `type: ['integer','string'], enum: [1,'auto']` collapsed the type to `integer` but still kept the string value `'auto'`, yielding `{type:'integer', enum:['auto']}` — a non-string type with an enum, which Gemini rejects. Keep `enum` only when the effective collapsed type is string (or unset), and stamp `type: 'string'` on a surviving typeless enum (e.g. a string `const` discriminator) so it satisfies Gemini's Type.STRING enum requirement. |
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LibreChat
English · 中文
✨ Features
-
🖥️ UI & Experience inspired by ChatGPT with enhanced design and features
-
🤖 AI Model Selection:
- Anthropic (Claude), AWS Bedrock, OpenAI, Azure OpenAI, Google, Vertex AI, OpenAI Responses API (incl. Azure)
- Custom Endpoints: Use any OpenAI-compatible API with LibreChat, no proxy required
- Compatible with Local & Remote AI Providers:
- Ollama, groq, Cohere, Mistral AI, Apple MLX, koboldcpp, together.ai,
- OpenRouter, Helicone, Perplexity, ShuttleAI, Deepseek, Qwen, and more
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- Secure, Sandboxed Execution in Python, Node.js (JS/TS), Go, C/C++, Java, PHP, Rust, and Fortran
- Seamless File Handling: Upload, process, and download files directly
- No Privacy Concerns: Fully isolated and secure execution
-
🔦 Agents & Tools Integration:
- LibreChat Agents:
- No-Code Custom Assistants: Build specialized, AI-driven helpers
- Agent Marketplace: Discover and deploy community-built agents
- Collaborative Sharing: Share agents with specific users and groups
- Flexible & Extensible: Use MCP Servers, tools, file search, code execution, and more
- Skills: Create reusable
SKILL.mdinstruction bundles for manual, automatic, or always-on agent workflows - Subagents: Delegate focused work to isolated child agent runs with their own context windows
- Compatible with Custom Endpoints, OpenAI, Azure, Anthropic, AWS Bedrock, Google, Vertex AI, Responses API, and more
- Model Context Protocol (MCP) Support for Tools
- LibreChat Agents:
-
🔍 Web Search:
- Search the internet and retrieve relevant information to enhance your AI context
- Combines search providers, content scrapers, and result rerankers for optimal results
- Customizable Jina Reranking: Configure custom Jina API URLs for reranking services
- Learn More →
-
🪄 Generative UI with Code Artifacts:
- Code Artifacts allow creation of React, HTML, and Mermaid diagrams directly in chat
-
🎨 Image Generation & Editing
- Text-to-image and image-to-image with GPT-Image-1
- Text-to-image with DALL-E (3/2), Stable Diffusion, Flux, or any MCP server
- Produce stunning visuals from prompts or refine existing images with a single instruction
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💾 Presets & Context Management:
- Create, Save, & Share Custom Presets
- Switch between AI Endpoints and Presets mid-chat
- Edit, Resubmit, and Continue Messages with Conversation branching
- Create and share prompts with specific users and groups
- Fork Messages & Conversations for Advanced Context control
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💬 Multimodal & File Interactions:
- Upload and analyze images with Claude 3, GPT-4.5, GPT-4o, o1, Llama-Vision, and Gemini 📸
- Chat with Files using Custom Endpoints, OpenAI, Azure, Anthropic, AWS Bedrock, & Google 🗃️
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🌎 Multilingual UI:
- English, 中文 (简体), 中文 (繁體), العربية, Deutsch, Español, Français, Italiano
- Polski, Português (PT), Português (BR), Русский, 日本語, Svenska, 한국어, Tiếng Việt
- Türkçe, Nederlands, עברית, Català, Čeština, Dansk, Eesti, فارسی
- Suomi, Magyar, Հայերեն, Bahasa Indonesia, ქართული, Latviešu, ไทย, ئۇيغۇرچە
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🧠 Reasoning UI:
- Dynamic Reasoning UI for Chain-of-Thought/Reasoning AI models like DeepSeek-R1
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🎨 Customizable Interface:
- Customizable Dropdown & Interface that adapts to both power users and newcomers
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- Never lose a response: AI responses automatically reconnect and resume if your connection drops
- Multi-Tab & Multi-Device Sync: Open the same chat in multiple tabs or pick up on another device
- Production-Ready: Works from single-server setups to horizontally scaled deployments with Redis
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🗣️ Speech & Audio:
- Chat hands-free with Speech-to-Text and Text-to-Speech
- Automatically send and play Audio
- Supports OpenAI, Azure OpenAI, and Elevenlabs
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📥 Import & Export Conversations:
- Import Conversations from LibreChat, ChatGPT, Chatbot UI
- Export conversations as screenshots, markdown, text, json
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🔍 Search & Discovery:
- Search all messages/conversations
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👥 Multi-User & Secure Access:
- Multi-User, Secure Authentication with OAuth2, LDAP, & Email Login Support
- Built-in Moderation, and Token spend tools
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⚙️ Configuration & Deployment:
- Configure Proxy, Reverse Proxy, Docker, & many Deployment options
- Use S3 with CloudFront for stable media links, edge delivery, signed cookies, and secured downloads
- Use completely local or deploy on the cloud
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📖 Open-Source & Community:
- Completely Open-Source & Built in Public
- Community-driven development, support, and feedback
For a thorough review of our features, see our docs here 📚
🪶 All-In-One AI Conversations with LibreChat
LibreChat is a self-hosted AI chat platform that unifies all major AI providers in a single, privacy-focused interface.
Beyond chat, LibreChat provides AI Agents, Model Context Protocol (MCP) support, Artifacts, Code Interpreter, custom actions, conversation search, and enterprise-ready multi-user authentication.
Open source, actively developed, and built for anyone who values control over their AI infrastructure.
🌐 Resources
GitHub Repo:
- RAG API: github.com/danny-avila/rag_api
- Website: github.com/LibreChat-AI/librechat.ai
Other:
- Website: librechat.ai
- Documentation: librechat.ai/docs
- Blog: librechat.ai/blog
📝 Changelog
Keep up with the latest updates by visiting the releases page and notes:
⚠️ Please consult the changelog for breaking changes before updating.
⭐ Star History
✨ Contributions
Contributions, suggestions, bug reports and fixes are welcome!
For new features, components, or extensions, please open an issue and discuss before sending a PR.
If you'd like to help translate LibreChat into your language, we'd love your contribution! Improving our translations not only makes LibreChat more accessible to users around the world but also enhances the overall user experience. Please check out our Translation Guide.
💖 This project exists in its current state thanks to all the people who contribute
🎉 Special Thanks
We thank Locize for their translation management tools that support multiple languages in LibreChat.