Your browser just became a powerful marketing assistant. OpenAI's Atlas for Mac puts ChatGPT beside the page you’re on, with agent mode to research and memory to keep context across sessions and devices, shaving time on briefs—try two daily prompts (top three competitor themes and a one-page brief with sources) to gauge savings. Microsoft Edge with Copilot now follows you across tabs, summarizes what's open, offers Actions and Journeys to auto-fill tasks, and enables co-browsing for teams up to 32. Anthropic Claude adds memory, portable Skills (playbooks you can load on demand), and Code on the Web to automate reporting, social briefs, and PR extracts. Pick one pilot this week and measure a faster, more referable brief cycle.