Quick gut check: how many times have you re-explained the same context to Claude? Your business, your ICP, your stack, your preferences… over and over, every new chat. That's about to change — and the way they're doing it is the part worth paying attention to 👇 Anthropic is testing a dual-mode memory system. You'll get to pick between two setups: Classic — what we have now. Everything Claude learns about you gets compressed into one summarized note. Memory Files — the new one. Your context gets split across multiple structured documents, organized by topic, project, or context. Notes Claude writes as you chat and reads back only when they're relevant — and you can browse and edit them anytime. Basically a built-in personal wiki Claude pulls from selectively, depending on what you're working on. Tied to this is a feature called Dreams, which Anthropic has already shipped (in preview) on its Managed Agents platform. It's a scheduled, background pass over your memory — merging duplicates, replacing stale info, resolving contradictions, and surfacing patterns it missed live. They literally model it on REM sleep: your brain replaying the day and deciding what to keep. The original store stays untouched while a cleaned-up version gets produced for review. Why this matters if you're building with AI: If you've touched always-on agents, you already know this pattern — file-based memory is what lets agents scale past the limits of a single context window. Anthropic is now bringing that same architecture toward the consumer product. That's the real signal here. They're not just improving chat memory — they're laying groundwork for persistent, always-on agents. For builders: this is the unlock for agents that actually remember the job. No more cramming everything into a system prompt and praying. You'll architect memory the way you'd architect a knowledge base — by project, by client, by context. (Side note: Harvey, one of Anthropic's enterprise customers, reportedly saw task completion rates jump ~6x once Dreams-style consolidation was turned on. That's not a rounding error.)