Research assistants

OpenAI's AI assistant for questions, research, writing and coding, with agent features that can carry out tasks for the user.

Anthropic's AI assistant for questions, writing, analysis and coding; it can carry out multi-step tasks across connected apps and files and produce documents, spreadsheets and decks.

Google's AI assistant across Search, Android and Workspace, with agent features that can carry out tasks for the user.

A mode in Google Search that answers questions with an AI-written response, using Gemini models, and lets users ask follow-up questions, with links to web sources.

Microsoft's consumer AI assistant. Copilot Checkout lets people buy inside Copilot, using the Agentic Commerce Protocol with PayPal, Shopify and Stripe (rolling out in the US from Jan 2026).

AI answer engine with the Comet agentic browser. US shoppers can buy through PayPal Instant Buy inside Perplexity (since Nov 2025).

A mobile browser for iOS and Android from The Browser Company; its Browse for Me feature reads several web pages and writes one answer page.

An AI assistant built into the Brave browser that summarizes pages, answers questions, translates and drafts text; Brave says chats are not kept or used for training.

An AI assistant from SpaceXSI (formerly xAI) for chat, image creation, coding and real-time answers from the web and X.

Web search, content extraction and answer APIs that developers use to ground AI agents and language models in current web results.