5 Best GPT Mobile Alternatives in 2026 (Open Source)
GPT Mobile — Chat app for Android that supports answers from multiple LLMs at once. Bring your own API key AI client. Supports OpenAI, Anthropic, Google, and Ollama. Designed with Material3 & Compose. vs ChatGPT/Claude apps: Open-source Android-native app that lets you chat with multiple LLMs simultaneously in one conversation, with Material You design and fully local chat storage
Short answer
- Closest match to GPT Mobile: NextChat.
- Most actively developed: LobeHub (2,429 commits in the last 90 days).
- Fastest growing: Open WebUI (+3,942 GitHub stars in the last 30 days).
These 5 open-source tools do the same job. They are ordered by how closely they match GPT Mobile, with live GitHub data so you can see which projects are actively maintained.
| Tool | GitHub stars | Stars / 30d | Last commit |
|---|---|---|---|
| GPT Mobile(original) | 1.2k | +32 | 2026-10-01 |
| NextChat | 88.8k | +196 | 2026-08-11 |
| Open WebUI | 153.8k | +3,942 | 2026-09-21 |
| LobeHub | 83.0k | +1,358 | 2026-10-02 |
| AnythingLLM | 66.7k | +1,554 | 2026-10-01 |
| TextGen | 47.7k | +215 | 2026-08-17 |
1. NextChat
✨ Light and Fast AI Assistant. Support: Web | iOS | MacOS | Android | Linux | Windows
Best for: Privacy-conscious users wanting local-only AI chat with multi-provider support; Teams needing a quick-deploy ChatGPT alternative on their own infrastructure; Organizations seeking a brandable, customizable AI chat interface
2. 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
3. LobeHub
Open-source platform for building, scheduling, and managing collaborative AI agent teams
What sets it apart: Unlike ChatGPT (closed) or Open WebUI (simple chat wrapper), Lobe Chat is an open-source agent collaboration platform with Agent Groups, white-box personal memory, a 10,000+ MCP plugin marketplace, and multi-modal support — positioning it as a full human-agent co-evolution workspace.
Best for: Teams wanting a modern ChatGPT alternative with agent collaboration, memory, and 10,000+ plugins; Developers seeking a self-hostable, extensible chat framework with MCP marketplace support
4. 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
5. TextGen
The original local LLM interface. Text, vision, tool-calling, training, and more. 100% offline.
What sets it apart: Most feature-complete local LLM web UI with 4 inference backends, training, tool-calling, vision, and image gen — vs Ollama (CLI-focused) or LM Studio (closed source)
Best for: Running any LLM locally with a full-featured web UI; Privacy-conscious users wanting 100% offline AI; Developers needing a local OpenAI-compatible API server
FAQ
- What are the best alternatives to GPT Mobile?
- The closest open-source alternatives to GPT Mobile are NextChat, Open WebUI and LobeHub, followed by AnythingLLM and TextGen. They are ranked by how closely they match what GPT Mobile does.
- Which GPT Mobile alternative is the most popular?
- Open WebUI has the most GitHub stars among GPT Mobile alternatives, with 153,800 stars.
- Which GPT Mobile alternative is the most actively maintained?
- By recent activity, LobeHub (2,429 commits in the last 90 days) is the most actively developed alternative.