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Letta Blog Posts
A curated collection of official Letta blog posts covering product announcements, research, benchmarks, and technical deep-dives. Posts are organized from newest to oldest.
Note on Freshness
Posts are tagged with freshness badges based on publication date relative to April 2026.
Product & Platform
| Post | Date | Status |
|---|---|---|
| Introducing the Letta Code App | Apr 6, 2026 | Fresh |
| Context Constitution | Apr 2, 2026 | Fresh |
| Letta's Next Phase | Mar 16, 2026 | Fresh |
| Remote Environments for Letta Code | Mar 4, 2026 | Fresh |
| Conversations: Shared Agent Memory | Jan 21, 2026 | Fresh |
| Letta Code: A Memory-First Coding Agent | Dec 16, 2025 | Fresh |
| Programmatic Tool Calling with any LLM | Dec 1, 2025 | Fresh |
| Claude Sonnet 4.5 and the Memory Omni-Tool | Sep 30, 2025 | Recent |
| Introducing Letta Filesystem | Jul 24, 2025 | Recent |
| Announcing Letta Client SDKs | Apr 17, 2025 | Recent |
| Agent File (.af) Format | Apr 2, 2025 | Aging |
| Introducing the Agent Development Environment | Jan 15, 2025 | Aging |
| Announcing Letta | Sep 23, 2024 | Aging |
| MemGPT is Now Part of Letta | Sep 23, 2024 | Aging |
Research & Concepts
| Post | Date | Status |
|---|---|---|
| Agent Memory: How to Build Agents that Learn | Jul 7, 2025 | Recent |
| Anatomy of a Context Window | Jul 3, 2025 | Recent |
| Memory Blocks: The Key to Context Management | May 14, 2025 | Recent |
| Sleep-time Compute | Apr 21, 2025 | Recent |
| RAG is not Agent Memory | Feb 13, 2025 | Aging |
| Stateful Agents: The Missing Link | Feb 6, 2025 | Aging |
| Continual Learning in Token Space | Dec 11, 2025 | Fresh |
| Context Repositories: Git-based Memory | Feb 12, 2026 | Fresh |
| Skill Learning for CLI Agents | Dec 2, 2025 | Fresh |
| The AI Agents Stack | Nov 14, 2024 | Aging |
Benchmarks & Evaluations
| Post | Date | Status |
|---|---|---|
| Letta Evals: Evaluating Agents that Learn | Oct 23, 2025 | Recent |
| Context-Bench: Benchmarking Context Engineering | Oct 30, 2025 | Recent |
| Context-Bench Skills: Can Any Model Use Skills? | Nov 7, 2025 | Fresh |
| Recovery-Bench: Recovering from Mistakes | Aug 27, 2025 | Recent |
| Benchmarking AI Agent Memory | Aug 12, 2025 | Recent |
| Terminal-Bench: Building the #1 OSS Agent | Aug 5, 2025 | Recent |
| Letta Leaderboard: Benchmarking Agentic Memory | May 29, 2025 | Recent |
| Rearchitecting the Agent Loop | Oct 14, 2025 | Recent |
Release Notes
| Post | Date | Status |
|---|---|---|
| Letta v0.6.4 Release | Dec 13, 2024 | Aging |
| Letta v0.5.2 Release | Nov 6, 2024 | Aging |
| Letta v0.5.1 Release | Oct 23, 2024 | Aging |
| Letta v0.5.0 Release | Oct 14, 2024 | Aging |
| Letta v0.4.1 Release | Oct 3, 2024 | Vintage |
| DeepLearning.AI Course | Nov 7, 2024 | Aging |