Best AI tools for chat assistant

OpenAI's AI assistant for questions, writing, coding and research, with a free tier and paid plans for more capable models.

Anthropic's AI assistant with a long context window, nuanced reasoning and strong performance on writing and analysis.

Google's multimodal AI assistant with live web search and deep integration with Gmail, Docs and Drive.

DeepSeek's free AI assistant with strong reasoning and coding capabilities, available on the web and mobile.

Microsoft's AI assistant built into Windows, Edge and Microsoft 365, with live web search and integration across Office apps.

xAI's AI assistant with access to real-time posts from X, image generation and conversational question answering.

ByteDance's consumer AI assistant.

Meta's free AI assistant available inside Facebook, Instagram, WhatsApp and Messenger, and as a standalone web app.

Free assistant powered by Alibaba's open Qwen models.

Long-context assistant that reads huge documents.

Mistral AI's consumer chat product with fast models, web search, image generation and document upload.

Quora's multi-model platform giving access to Claude, GPT-4o, Gemini and more through a single interface.

Korea's all-in-one AI app.

Arabic-first AI assistant.

Many AI models and agents in one platform.

Chat with millions of user-created AI characters.

AI-first note-taking app that automatically organises notes and answers questions across your knowledge base.