The rise of Microsoft Copilot has brought new layers of intelligence and automation to productivity, research, and daily work, but the question of whether Copilot is available without a Microsoft 365 subscription—and what limitations apply across various plans—remains a major source of confusion for individuals and organizations. The answer depends on both the version of Copilot in question and the licensing context in which it is accessed. Understanding how Copilot operates

Perplexity AI is built as a retrieval-first research system that synthesizes answers from real-time sources and attaches citations to individual claims. Prompting success depends less on creative instruction writing and more on how precisely a prompt shapes retrieval intent, evidence boundaries, and iterative context across threads. Understanding Perplexity’s product mechanics is essential for producing reliable, auditable, and professional-grade outputs. ····· Core Perplexit

Uploading files is a central feature of advanced Claude workflows, powering research, automation, data analysis, and creative projects across a wide range of domains. The file upload process in Claude is governed by a set of interconnected technical boundaries, which include strict size limits, supported format lists, context window constraints, session-based rules, and storage policies that vary by interface and usage tier. The interplay of these boundaries shapes every stag