digest

March 16, 2026

2026-03-16
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Letta's next phase

@Letta_AIarticlex

TL;DR. Letta is pivoting to "Letta Code," an open, model-agnostic agent harness built around persistent memory in git-backed files (MemFS) and computer use, while sunsetting its older server-side memory abstractions.

Takeaways

  • Memory moves from bespoke DB-backed tools to generalized filesystem ops over "context repositories" — agents edit memory with bash, not custom APIs.
  • Positioning bet: while OpenAI, Anthropic, and Google bundle agent harnesses with their own models, Letta wants to be the open runtime where you own the memory and pick the model.
  • Casualties of the pivot: Letta Filesystem, legacy memory tools (core_memory_replace), Templates, and server-side Identities all get replaced by client-side / SDK equivalents.