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* 🛰️ feat: Add GPT-5.5 + Frontier OpenAI Models, Drop Deprecated Defaults * 🛰️ fix: Address Codex Review on OpenAI Model Refresh - Replace nonexistent gpt-5.5-chat-latest with the actual chat-latest alias; register its context window, output cap, pricing, and cache rates, and pin explicit rates for legacy gpt-5.x-chat-latest aliases so the new chat-latest key cannot out-match their cheaper pricing - Add long-context premium tiers (>272K input) for gpt-5.5 and gpt-5.4 - Disable streaming for pro reasoning models (o1-pro, gpt-5.x-pro), which OpenAI does not support, with spec coverage * 🛰️ fix: Address Codex Round-2 Review and CI Spec Failure - Allow chat-latest through the official OpenAI fetched-model filter - Export isProReasoningModel and drop unsupported sampling parameters for versioned pro models (gpt-5.4-pro, gpt-5.5-pro), which the versioned-model exemption previously let through - Honor the pro-model streaming disable in both agent chat-completions routes, which decide SSE from model_parameters before llmConfig exists - Update models.spec default-list assertions for the refreshed defaults and cover chat-latest filter retention * 🛰️ fix: Address Codex Round-3 Review - Convert max_tokens for chat-latest, which the gpt-[5-9] guard missed - Drop snake_case sampling params (top_p, logit_bias, penalties) in the reasoning-model exclusion list so addParams-sourced values are removed - Add createOpenAIAggregatorHandlers and wire them into the agent chat-completions service's non-streaming branch, which previously ran with no handlers and always returned an empty aggregated response * 🛰️ ci: Fix Import Order Drift and Controller Spec Mock - Sort type import first in service.spec.ts per import-order convention - Register isProReasoningModel in the openai controller spec's @librechat/api mock factory, whose enumerated exports left the new helper undefined and broke the non-streaming flow under test * 🛰️ chore: Trim Scope to Model Catalog Changes Revert the OpenAI endpoint and agent handler changes (pro-model streaming, sampling exclusions, non-streaming aggregation) — that surface is moving out of LibreChat into the agents SDK and belongs in its own change. Keep the model list, token windows, pricing, and the fetched-model filter for chat-latest. * 🛰️ fix: Correct GPT-5.4 Context Windows and Pro Long-Context Pricing - Set gpt-5.4 and gpt-5.4-pro context to the documented 1,050,000 window — 272K is the long-context pricing breakpoint, not the cap, and using it truncated prompts before they could reach that tier - Add gpt-5.4-pro long-context premium rates ($60/$270 above 272K) per its model page; gpt-5.5-pro documents no long-context tier * 🛰️ fix: Add gpt-5.4-nano and gpt-5.5-pro Long-Context Pricing - Register gpt-5.4-nano ($0.20/$1.25, cached $0.02, 400K context) in the model list, pricing, cache, and token maps — the longest-match fallback billed it at gpt-5.4's $2.50/$15 - Add gpt-5.5-pro long-context premium rates ($60/$270 above 272K); the pricing table lists the tier even though the model page omits it
LibreChat
English · 中文
✨ Features
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🖥️ UI & Experience inspired by ChatGPT with enhanced design and features
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🤖 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
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🔦 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:
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🔍 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 →
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🪄 Generative UI with Code Artifacts:
- Code Artifacts allow creation of React, HTML, and Mermaid diagrams directly in chat
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🎨 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.