📝MythOS describes itself as a networked knowledge platform where every idea, person, project and decision lives as a linked memo in a library you own. 📝Mem.ai now presents itself on its homepage as "Your AI chief of staff," and its About page calls Mem "an AI-native notes app and personal AI thought partner." They split on where the AI sits: Mem says its Agent "builds a living picture of your tasks, projects, and goals—then steps in at the right moments to keep you moving," while MythOS memos can be published, shared and handed to AI agents over 📝MCP. Mem.ai is a separate company from 📝MemPalace, an open-source 📝AI memory system that stores conversation history verbatim.
At a Glance
Capture and Organization
Mem's homepage says its Workspace lets you "Capture notes, meetings, ideas, and research without stopping to organize." With Push-to-Remember, you "Hold a shortcut and tell Mem Agent whatever is on your mind." In meetings, "Mem listens without a meeting bot, writes the notes, and keeps track of decisions and follow-ups." The page says "Mem Agent reviews new context in the background, connects it to what it already knows, and keeps a structured picture of your tasks, projects, and goals." In MythOS, typing @ draws a mention to another memo, and every mention becomes a backlink that feeds the library's Graph. Each day gets a 📝Daily Memo for journaling, with tasks and habits tracked alongside it, and Version History keeps 13 months of restorable edits.
AI and Agent Access
Mem's homepage says "Mem Agent decides when a nudge will actually help—then reaches out with the relevant context and a clear next step." MythOS exposes a library to MCP clients through one endpoint, mythos.one/api/mcp. 📝Claude on the web, desktop, iOS and Android signs in over OAuth, and a connected client gets 60 tools for search, memo writes, templates, tasks and the daily journal, with four identity memos (Soul, Style, Human and Memory) loaded before it writes. MythOS's 📝semantic search finds memos by meaning and is reached through AI clients rather than the in-app search bar. Chat inside MythOS runs on six model providers, on a MythOS-funded balance or the user's own key.
Plans and Pricing
As of November 2026, Mem's pricing page lists Mem Free, Mem Plus at $9 / month, Mem Pro at $29 / month, and Pro 2×, 5×, 10× and 20× plans at $49, $99, $149 and $199 / month. MythOS's Plans & Tiers memo states that "writing is never the thing you pay for": its Free, Scribe, Scholar and Oracle plans sell reach, with Scholar adding public memos, collaborators, API keys and agent access.
Who Each Is For
Mem's homepage lists its audiences as "Founders & Solopreneurs," "Consultants & Advisors," "Executives & Managers," and "Content Creators." MythOS's own overview says one library serves "private thinking, team collaboration, public writing, and the AI tools you work with."
Related
- 📝MemPalace vs Obsidian vs MythOS as Claude Memory — the hub comparing MythOS with other memory systems
- 📝MemPalace — a separately made open-source memory system with a similar name
- 📝Claude Projects and Claude memory — Claude's own workspaces and saved memory
- 📝MythOS vs Logseq — MythOS compared with an open-source outliner