Monolithos
Monolithos is the personal agent operating system as referred to on the official website: built on your Markdown and YAML memories, it connects knowledge, writing, tasks, and multi-device work, with key actions awaiting authorization.
Updated: 2026-10-27
What is Monolithos?
Monolithos' official Chinese website refers to its product as your Personal Agent OS. It attempts to connect memory and action into a personal intelligent agent that continuously understands you: memory is owned by the user, goals are determined by the user, and key actions require user authorization. The website also reminds that the complete subsequent experience is still under construction, and the actual functions of the current downloaded version shall be subject to the release notes.
Who is it for?
- Power knowledge workers who want their personal data, preferences and project statuses to be accumulated long-term rather than scattered across multiple conversations.
- Users who already have an Obsidian vault and want to add AI writing, task management, and organization capabilities to it.
- Creators who need work such as meeting minutes, writing, presentations, and podcasts to share the same memory context.
- Individual users who care about data ownership, portability, and the boundaries of action authorization.
Key features
6Memory & Continuity
The official website states that materials, knowledge, and preferences do not need to be reintroduced every time; accumulated content can participate in subsequent thinking, and responses are generated based on the user's context.
Multi-step AI Tasks
The official website states that Flow uses multi-step tasks to advance research, writing, and deliverable generation. Steps with consequences will pause and await judgment, with the final decision resting with the user.
Eight Work Modules
The official website lists Memory, Flow, Black Hole, Minutes, Codex, Prism, Audio, and Facet, which cover memory recall, task execution, data organization, meeting archiving, writing, presentations, podcasts, and visual asset libraries respectively.
Obsidian Compatibility
The official website states that it can natively open Obsidian vaults, using the same Markdown, tags, and bidirectional links, without importing, converting, or copying them into another database.
Memory Governance
The official website's Memory Constitution states that memory traits are traceable, adjustable, and deletable; memory suggestions await confirmation, recall comes with a source attached, and private domain content is not included in the cloud AI context.
Multi-platform version
The official website states that V1.0.2 is now available on macOS, Windows, and iOS, with the interface supporting English, Simplified Chinese, Traditional Chinese, Japanese, and Korean.
How to use Monolithos
- Start with your existing Obsidian vault or a small batch of project documents to verify whether the recall quality and memory suggestions meet your expectations.
- Retain manual confirmation steps for tasks with real-world consequences, and use Monolithos initially for research, organization, and draft generation.
- Regularly check the sources of your memories and deletable items, correct incorrect inferences in a timely manner, and prevent long-term accumulation from polluting subsequent responses.
- The official website states that a 7-day full-featured trial is available without a credit card.
- the Core plan costs $39 per month and the Max plan costs $89 per month, which can be selected according to actual computing power needs.
- For capabilities marked as the next phase on the official website, such as remote execution and long-term goal undertaking, do not integrate them into critical workflows before they are fully implemented.
Traffic & popularity
Data month Sep 2026
Monolithos receives about 10.3K visits per month and ranks #1,960,955 worldwide.
Monthly visits
9 monthsTraffic sources
- Search40.4%
- Direct26.1%
- Referrals13.3%
- Display ads7.0%
- Social5.9%
- Other7.3%
Estimated from third-party traffic data.
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