ChatGPT 的最佳开源替代品（2026）

本地或云端运行 Gemma、Qwen、DeepSeek、gpt-oss 等开源大模型的工具，提供命令行、REST API 和 Python/JavaScript 库。

一体化 AI 应用，可与文档对话、运行 AI 智能体，支持本地优先部署、多用户和多种大模型。

可自托管的类 ChatGPT 聊天平台，统一接入多家 AI 模型服务，支持 Agent、MCP 与多用户登录。

可自托管的 AI 同事平台，每个智能体拥有独立的浏览器、文件和工具，所有操作先经策略校验再记录。

A cross-platform desktop AI assistant that connects to major LLM providers and acts as an MCP client with a local knowledge base.

An open-source AI agent app for iOS and Android that runs models like Claude and GPT with an on-device Linux shell, browser automation and device integrations.

Open-source, local-first desktop AI workbench for reproducible scientific research, with agents, Python/R notebooks, and traceable artifacts.

Open-source chat interface where an AI agent answers questions with text, native components, or custom interactive UI such as charts, calculators and maps.

A native AI chat client for iPhone, iPad, and Mac that connects to cloud, self-hosted, and on-device models.

A local-first AI office assistant that turns one request into editable PPTX, DOCX, XLSX and HTML files, using your own model keys or local models.

A macOS and iOS document chat app that answers questions about your files using Apple Foundation Models, running entirely on-device.

A VS Code extension that turns plain .chat.md files into editable AI chat sessions with MCP tool support across LLM providers.

A self-hosted personal AI agent that resumes interrupted tasks after a restart, with subagents, scheduled jobs, long-term memory, a browser UI and WeChat support.