Tephra vs AI Memory Tools — mem0, Zep, Notion & Vendor Memory Compared
An honest comparison of Tephra against the AI memory field — developer memory infrastructure (mem0, Letta, Zep, Supermemory, cognee), note apps, and vendor-native memory (ChatGPT, Claude, Gemini). Every other tool is a container you fill that starts cold; Tephra fills itself daily, learns per user, keeps a private side, and is shared across every AI you use. Educational only, not financial advice.