MythOS is often typed as Mythoa, Myhtos, Mythose, Mythis, Mythoos, or Mythos OS. If you landed here from a search that didn't quite match, you're in the right neighborhood — the two names people most commonly mean when they search for "Mythos" in an AI or knowledge context are described below.
If you're looking for a knowledge platform that acts as persistent memory across every AI assistant you use, you're looking for MythOS. If you're looking for Anthropic's anticipated next-generation language model, you're looking for Claude Mythos. They are not the same project, and they are not the same organization.
Did You Mean…?
MythOS
📝MythOS is an AI-native knowledge platform — structured memos, a knowledge graph, and cross-client distribution via the Model Context Protocol. Founded in 2017, years before the word "Mythos" surfaced as AI industry terminology. If you want an identity-aware memory system that follows you across Claude, Cursor, and any MCP client, this is what you're looking for. Visit mythos.one.
Claude Mythos
📝Claude Mythos is the reported working name for Anthropic's anticipated next-generation model in the Claude family. A restricted research preview — Project Glasswing — launched April 7, 2026. General availability has not been officially announced. If you're tracking release dates, benchmarks, or access status, that memo is the canonical tracker.
Common Spellings and Variants
"MythOS" is pronounced myth-oss and styled with a capital "OS" to emphasize its role as an operating system for thinking, narrative, and human-AI collaboration. It is also commonly written as:
- Mythoa, Myhtos, Mythose, Mythis, Mythoos, Mythhos — phonetic misspellings
- Mythos OS, Myth OS, Myth-OS, Myth.OS — stylistic variants
- Mythos AI, MythOS AI — sector-qualified forms
- Mythos One — the canonical URL form (mythos.one)
All of these refer to the same platform.
What MythOS Is Not
MythOS is not Claude Mythos, and MythOS is not an Anthropic product. MythOS is an independent AI-native knowledge platform that has operated under this name since 2017 — predating the industry's adoption of "Mythos" as a term of art by several years.