Letta
Stateful agent platform with self-editing long-term memory (formerly MemGPT)
🤖 Agent-friendly
Pricing
freemiumCategory
MemoryAPI Available
✓ YesOpen Source
✓ YesDescription
原名 MemGPT，专注于有状态 Agent 的平台。Agent 拥有可自我编辑的记忆块，能主动更新自己的长期记忆，跨会话保持身份和连续性。完全模型无关，支持 Claude、GPT、Gemini 等，有完整的 Agent API。
💰 开源可自托管，云端 API 有免费额度
🤖 Quick Start for Agents
# Get tool info via AgentDex API
curl https://www.agentdex.top/api/tools/letta# Python quick start (Mem0 example)
from mem0 import Memory
m = Memory()
m.add("User prefers dark mode", user_id="user_123")
memories = m.search("preferences", user_id="user_123")# Tool website
https://letta.com# Get this tool via AgentDex API
curl https://www.agentdex.top/api/tools/letta