Most "second brains" are a place to put notes — you still do the capturing, organizing and re-pasting. Engram is memory for whatever AI assistant you use — Claude (claude.ai & desktop), ChatGPT, Codex, Antigravity — that feeds itself from your actual tools and acts on its own. Here's the honest line-by-line.
Obsidian is a brilliant, local, human-readable vault. Wired to Claude (via a community add-on, or by uploading notes) it can answer from your notes — once you've written and organized them.
| Obsidian + Claude | Engram | |
|---|---|---|
| Who does the capture | You — write & organize every note by hand | It does — your assistant reads its connected sources (Slack, Gmail, Drive, and more) on its daily run; Engram stores it and keeps it fresh |
| Works with Claude | Read-mostly, via a bridge you wire up; write-back is clunky | Plugs in directly — reads & writes, 50+ tools |
| Proactive | A passive library — it waits to be asked | An agent layer — morning brief, quality-gate, nightly learning |
| Anywhere / any assistant | Local-first; the bridge runs on one machine, tied to Claude | Your choice — Locally stored (one device) or Cloud Hosted (any assistant, anywhere) — across Claude (claude.ai & desktop), ChatGPT, Codex, Antigravity |
| Setup | Assemble it: vault + plugins + config + wiring | Connect + activate, managed |
| Data & security | Local files — only as safe as the device, backups and sync you manage yourself | Access-isolated — only you can reach your data; Locally stored is an open, inspectable file on your own disk |
| Cost | Free (Sync optional) | Free |
Different jobs.
Obsidian is you putting the information in — you curate it.
Engram learns and builds the synapses as it lives with you.
Great docs, AI that searches your workspace. But it's a place you write things, scoped to Notion — it doesn't pull from Slack/calls or run a daily agent for you.
Engram: auto-captured from every tool, used by whatever assistant you connect.Remembers a few preferences across chats. Shallow and opaque — not your projects, decisions or stakeholders, and not yours to inspect or export.
Engram: deep, structured, inspectable, exportable memory you own.Smart note apps with AI recall — still note-first: you capture, they retrieve. It doesn't plug into Claude both ways, and nothing works ahead of you.
Engram: fills itself, and acts — not just retrieves.The real status quo: copy the same context into every new chat. It works — until you forget a doc, or the doc goes stale.
Engram: you just ask; it already has the current context.The line that matters isn't a checkbox — it's this: only you have access to the data you own. Here's exactly how that holds, mode by mode — see the full security & data page for the honest tradeoffs.
Connect Engram once and let it fill itself.