
Perplexity is an AI-powered answer engine that combines conversational search with cited, real-time web results.
Published pricing
Free plan available
Perplexity and Gemini are frequently compared as AI research/answer tools with overlapping search-augmented chat positioning.
Relationship verified September 25, 2026.

Microsoft Copilot is a free consumer AI chat assistant from Microsoft for chatting, image creation, and everyday tasks, distinct from Microsoft 365 Copilot and GitHub Copilot.
Published pricing
Free plan available
Categories
Productivity, AI Assistant
Microsoft Copilot and Gemini are positioned as competing general AI assistants in comparison articles.
Relationship verified September 25, 2026.

Grok is an AI assistant built by SpaceXAI (formerly xAI) offering chat, image generation, coding help, and real-time answers from the web and X.
Published pricing
Free plan available
Grok and Gemini are included together in multi-way AI assistant comparison coverage as competing chatbots.
Relationship verified September 25, 2026.