5 Best LibreChat Alternatives in 2026 (Open Source)
LibreChat — Open-source ChatGPT-like interface for multiple AI models, agents, and sandboxed code execution. Most feature-complete self-hosted ChatGPT alternative — uniquely combines agents, MCP, code interpreter, image gen, and multi-user auth in one package, unlike single-provider UIs
Short answer
- Closest match to LibreChat: Open WebUI.
- Most actively developed: Cherry Studio (2,066 commits in the last 90 days).
- Fastest growing: Open WebUI (+3,942 GitHub stars in the last 30 days).
- No commit in 6+ months: Open Assistant API.
These 5 open-source tools do the same job. They are ordered by how closely they match LibreChat, with live GitHub data so you can see which projects are actively maintained.
| Tool | GitHub stars | Stars / 30d | Last commit |
|---|---|---|---|
| LibreChat(original) | 45.2k | +1,618 | 2026-10-01 |
| Open WebUI | 153.8k | +3,942 | 2026-09-21 |
| AnythingLLM | 66.7k | +1,554 | 2026-10-01 |
| Cherry Studio | 52.3k | +1,569 | 2026-10-02 |
| Open Assistant API | 367 | +1 | 2024-12-14 |
| Casibase | 5.7k | +190 | 2026-10-01 |
1. Open WebUI
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
What sets it apart: Unlike LM Studio (desktop-only, personal use), Open WebUI is a full multi-user platform with RAG, RBAC, SCIM provisioning, 9 vector DBs, and Google Drive/OneDrive integration — the most feature-complete self-hosted ChatGPT alternative
Best for: Teams wanting a self-hosted ChatGPT alternative with full data control and Ollama integration; Organizations needing enterprise-grade AI platform with LDAP/SCIM/SSO and multiple vector DB backends
2. AnythingLLM
The all-in-one AI productivity accelerator. On device and privacy first with no annoying setup or configuration.
What sets it apart: Unlike Open WebUI (chat-only) or RAGFlow (enterprise RAG focus), AnythingLLM is the most complete all-in-one desktop AI app combining RAG, no-code agent builder, MCP compatibility, multi-user support, and embeddable widgets — requiring zero coding to set up a private AI workspace.
Best for: Non-technical users who want a private, all-in-one ChatGPT replacement with document chat and agents; Small teams needing a self-hosted multi-user AI workspace with RAG and agent capabilities
3. Cherry Studio
AI productivity studio with smart chat, autonomous agents, and 300+ assistants. Unified access to frontier LLMs
What sets it apart: Unlike Lobe Chat (web-first) or AnythingLLM (RAG-focused), Cherry Studio is a polished Electron desktop client purpose-built for multi-provider LLM access with 300+ pre-built assistants and MCP support, requiring zero environment setup.
Best for: Power users who want a single desktop app to access multiple LLM providers without switching between web UIs; Users who need side-by-side multi-model comparison for prompt testing; Non-technical users wanting a ready-to-use ChatGPT-like desktop experience with no environment setup
4. Open Assistant API
Open-source, self-hosted AI assistant API compatible with OpenAI and supporting LLMs, RAG, and tools
What sets it apart: Open-source OpenAI Assistant API compatible service supporting multiple LLMs via One API, with RAG, web search, and local deployment
Best for: self-hosted-openai-assistant-alternative; multi-llm-assistant-apps; enterprise-local-deployment
5. Casibase
Open-source AI knowledge base and MCP/A2A management platform with admin UI, user management, and SSO
What sets it apart: vs other knowledge base platforms: Enterprise-grade open-source AI Cloud OS with built-in SSO (Casdoor), admin UI, MCP/A2A agent management, and support for 10+ LLM providers out of the box
Best for: Enterprise teams needing a self-hosted AI knowledge base with admin UI; Organizations requiring SSO and user management for AI chatbots; Multi-model AI platform deployment with MCP/A2A support
FAQ
- What are the best alternatives to LibreChat?
- The closest open-source alternatives to LibreChat are Open WebUI, AnythingLLM and Cherry Studio, followed by Open Assistant API and Casibase. They are ranked by how closely they match what LibreChat does.
- Which LibreChat alternative is the most popular?
- Open WebUI has the most GitHub stars among LibreChat alternatives, with 153,800 stars.
- Which LibreChat alternative is the most actively maintained?
- By recent activity, Cherry Studio (2,066 commits in the last 90 days) is the most actively developed alternative.