AgentIndex icon
AgentIndex
akb logo
akb
★ 163
vs
letta logo
letta
★ 25.2k

akb vs letta

akb: AKB is an agent knowledgebase that serves organizational memory for AI agents over the Model Context Protocol (MCP). It provides hybrid semantic + keyword search, structured tables, files, and a URI graph, all backed by Git for version history. Designed as a drop-in alternative to Confluence or Notion for MCP-aware agents like Claude Code, Cursor, and Windsurf.; letta: Letta is a powerful platform for building stateful AI agents equipped with advanced memory, enabling them to learn and self-improve over time. It provides both a command-line interface for local agent execution and a comprehensive API with Python and TypeScript SDKs for seamless integration into applications.

01

TL;DR

akb logo
akbMemory & Context · ★ 163

Provide persistent memory and knowledge management for AI coding agents

Read akb full review →
letta logo
lettaMemory & Context · ★ 25.2k
When to choose:
  • You want a long-lived agent that remembers past work and rewrites its own memory and context over time.
  • You want one agent reachable from CLI, desktop, browser, mobile and messaging apps, with subagents, schedules and hooks.
  • You want memory you can inspect: the README says context is tracked in git and can sync to your own repository.
When to skip:
  • You only need to add memory to an agent you already use through MCP; a small MCP memory server is a lighter fit.
  • You rely on older Letta tutorials or the V1 API server: the project restructured, and the V1 server is retired.
  • You want everything to work without signing in: Letta Cloud is the default backend and some features need it.
Read letta full review →
02

Side-by-Side Comparison

Field
akb logoakb
letta logoletta
Category
Memory & Context
Memory & Context
Stars
★ 163
★ 25.2k
License
NOASSERTION
Apache-2.0
Install Command
cp config/app.yaml.example config/app.yaml && cp config/secret.yaml.example config/secret.yaml && docker compose up -d
npm install -g @letta-ai/letta-code
Updated
1d ago
5d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
agent, claude, claude-code
Stateful AI, Agent Platform, Advanced Memory
03

Features

akb logoakb
01Git-backed version history for all documents and files
02MCP (Model Context Protocol) integration via Streamable HTTP and stdio
03Hybrid search (dense + BM25) with RRF fusion
04Structured documents and tables with Markdown and YAML frontmatter
05Explicit knowledge graph with relations (depends_on, related_to, implements)
letta logoletta
01Build stateful AI agents with advanced memory
02Agents capable of learning and self-improvement over time
03CLI tool for running agents locally in your terminal
04Comprehensive API for integrating agents into applications
05Support for skills and subagents; fully model-agnostic
04

Use Cases

akb logoakb
↳Provide persistent memory and knowledge management for AI coding agents
↳Replace Confluence or Notion for agent-accessible documentation
↳Manage complex project knowledge with structured docs, tables, and graph relationships
letta logoletta
↳Running AI agents locally in your terminal for coding and general tasks.
↳Integrating stateful AI agents into custom applications using the API and SDKs.
↳Developing self-improving AI systems that adapt and learn continually.
05

Best For

akb logoakb
—
letta logoletta
Most PopularEssentialTrending
FAQ

FAQ

What is the difference between akb and letta?
Both akb and letta are in the Memory & Context category. akb has 163 stars, while letta has 25.2k stars.
Which is better, akb or letta?
The best choice depends on your use case. Choose akb if Provide persistent memory and knowledge management for AI coding agents, and letta if Running AI agents locally in your terminal for coding and general tasks..
Is akb free or open source?
Yes, akb is open source on GitHub (NOASSERTION).
Is letta free or open source?
Yes, letta is open source on GitHub (Apache-2.0).
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