AgentIndex icon
AgentIndex
letta logo
letta
★ 25.2k
vs
second-brain-cloudflare logo
second-brain-cloudflare
★ 818

letta vs second-brain-cloudflare

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.; second-brain-cloudflare: Second Brain is a self-hosted MCP server on Cloudflare Workers that provides a persistent memory layer for AI tools like Claude, ChatGPT, and Cursor. It allows storing, searching, and recalling information across conversations with semantic search and recency bias. Deployable with one click on Cloudflare's free tier.

01

TL;DR

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 →
second-brain-cloudflare logo
second-brain-cloudflareMemory & Context · ★ 818

Give Claude a persistent memory across sessions

Read second-brain-cloudflare full review →
02

Side-by-Side Comparison

Field
letta logoletta
second-brain-cloudflare logosecond-brain-cloudflare
Category
Memory & Context
Memory & Context
Stars
★ 25.2k
★ 818
License
Apache-2.0
MIT
Install Command
npm install -g @letta-ai/letta-code
git clone https://github.com/rahilp/second-brain-cloudflare.git
Updated
5d ago
1w ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
Stateful AI, Agent Platform, Advanced Memory
ai-memory, claude, claude-ai
03

Features

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
second-brain-cloudflare logosecond-brain-cloudflare
01Store anything with `remember`
02Append updates without duplicates
03Semantic search with recency bias via `recall`
04Browse recent memories chronologically
05Delete entries and chunks with `forget`
04

Use Cases

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.
second-brain-cloudflare logosecond-brain-cloudflare
↳Give Claude a persistent memory across sessions
↳Store project context and decisions for AI assistants
↳Capture ideas and notes from any MCP-compatible client
05

Best For

letta logoletta
Most PopularEssentialTrending
second-brain-cloudflare logosecond-brain-cloudflare
Trending
FAQ

FAQ

What is the difference between letta and second-brain-cloudflare?
Both letta and second-brain-cloudflare are in the Memory & Context category. letta has 25.2k stars, while second-brain-cloudflare has 818 stars.
Which is better, letta or second-brain-cloudflare?
The best choice depends on your use case. Choose letta if Running AI agents locally in your terminal for coding and general tasks., and second-brain-cloudflare if Give Claude a persistent memory across sessions.
Is letta free or open source?
Yes, letta is open source on GitHub (Apache-2.0).
Is second-brain-cloudflare free or open source?
Yes, second-brain-cloudflare is open source on GitHub (MIT).
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