MemGPT Has a Free API: Build AI Agents with Unlimited Memory

What is MemGPT? MemGPT (now Letta) is an open-source framework that gives LLMs unlimited memory through a virtual context management system. Instead of being limited to a fixed context window, MemGPT agents manage their own memory — storing, retrieving, and organizing information like a human would. Why MemGPT Changes Everything Every LLM has a context window limit. GPT-4 Turbo has 128K tokens, Claude has 200K. But real applications need: Persistent memory across conversations — remember users, preferences, past interactions Infinite context — process documents larger than any context window Self-organizing memory — AI decides what to remember and what to forget Tiered storage — hot/warm/cold memory like a real operating system Quick Start pip install letta letta server from letta import create_client client = create_client () # Create an agent with memory agent = client . create_agent ( name = " research-assistant " , memory = client . create_block ( label = " human " , value = " User