Mem.ai

Mem.ai is built on a core insight: the hardest part of note-taking isn't capturing information — it's finding it later. Mem uses AI to solve that retrieval problem by automatically surfacing relevant notes based on what you're currently working on, even without tags or folders. Mem remains an independent, actively developed product (Mem 2.0), founded by Kevin Moody and Dennis Xu, and achieved SOC 2 Type II compliance in January 2026.

The most distinctive feature is Mem Chat, an AI assistant that knows your entire note library. Open a new note and start typing about a project; Mem will surface related notes you wrote weeks ago via "Similar Mems." Ask it a question and it searches your personal knowledge base before answering — grounding responses in your own notes rather than generic information.

What Mem Does Best

Automatic organization is Mem's signature. There are no folders, no manual tagging (though you can tag if you want), and no filing overhead. Mem's AI infers structure from content and creates connections automatically. For people whose existing note systems have broken down under the weight of hundreds of notes, this is liberating.

Mem Chat is where Mem earns its AI billing. Ask "What did I decide about the product launch date?" and Mem finds the relevant note and answers with a citation. It's essentially a personal search engine over your own thinking.

Pricing

Free plan includes unlimited mems, templates, and 5GB of storage. Mem X is $10/month and unlocks the full AI feature set: Smart Search, Similar Mems, and Mem Chat. Mem X Teams is $15/user/month and adds team-wide semantic search across a shared knowledge base. Enterprise plans are available with custom pricing.

Who Should Use Mem?

Knowledge workers, researchers, writers, and anyone who takes a lot of notes but struggles to find them later. Particularly useful for people who work across many projects simultaneously and need to connect ideas across time. Those who've tried Notion, Obsidian, or Roam and found the organizational overhead too high will appreciate Mem's automatic approach.