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One second brain across your devices and AI agents.

Start with your own model key. Upgrade for a hosted Brain that stays available across Web, iOS, Codex, Claude Code, and your capture channels.

Free

For validating the personal and cross-Agent memory loop.

$0self-serve
  • Web capture and grounded Q&A
  • Brain projects and Context Packs
  • MCP connections for AI agents
  • Bring your own model key

Pro

For a hosted second brain across devices, Agents, and channels.

$9per month
  • Hosted account and sync
  • iOS capture, Brain review, history, and audit
  • Codex and Claude Code continuity
  • Browser, Telegram, DingTalk, Feishu channel setup
  • Portable account backup

Model provider charges are billed by the provider you configure. memduck stores the account settings needed to run your workspace.