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Best AI Chatbot Tools 2025

最佳AI聊天助手工具推荐（2025）

Top AI chat assistants in 2025 — ChatGPT, Claude, Gemini, Kimi and more. Mostly free.

2025年最值得用的AI对话助手，包括ChatGPT、Claude、Kimi、通义千问等，免费工具优先推荐。

⭐ Top Picks

The world's most popular AI assistant by OpenAI. Supports text, images, and voice.

OpenAI 出品，全球最流行的 AI 助手，GPT-4o 支持文字、图片、语音。

By Anthropic. Excellent for long documents, coding, and creative writing.

Anthropic 出品，擅长长文本分析、代码和创意写作，免费版很好用。

Chinese AI with excellent long-document support. Completely free.

国产长文本 AI，支持上传超长 PDF，中文理解能力强，完全免费。

Chinese AI with top-tier reasoning, coding and math. Completely free.

国产顶级推理模型，代码和数学能力突出，完全免费开放。

By Google. Powerful free tier with deep Google ecosystem integration.

Google 出品，免费版功能强大，与 Google 生态深度整合。

Baidu's AI assistant with strong Chinese language capabilities.

百度出品，中文理解和生成能力强，免费使用，支持图文。

Alibaba's AI assistant. Free, good for long conversations and documents.

阿里云出品，免费，支持长对话和文档处理，中文友好。

AI-powered search engine that cites sources. Great for research.

AI 搜索引擎，回答问题时直接引用来源，适合信息查找。

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