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Head-to-Head Comparison

Agentmemory vs Letta Agent

Compare features, pricing, integrations, and community reviews

Agentmemory

Agentmemory

AI Tools

The memory layer your coding agent should have had from day one. 95.2% retrieval R@5. 92% fewer tokens. 0 external databases. Works with every agent.

ai
Letta Agent

Letta Agent

AI Tools

Letta Agent is an AI agent featuring an operating system-like architecture. This design manages a 'virtual context,' enabling agents to access memory beyond typical context window limits. It provides hierarchical, editable memory blocks, allowing for explicit control over memory allocation. This architecture supports continuous learning and evolving capabilities, fostering self-editing and persistent agent entities with lifelong histories. Letta Agent is open-source and supports both cloud and self-hosted deployments for its platform.

ai

Pricing

Freemium
Paid

Key Features

  • Persistent memory for AI coding agents
  • Runs locally
  • Zero external databases
  • 95.2% retrieval rate
  • 92% fewer tokens
  • Not available
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Community Verdict

Agentmemory

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Letta Agent

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At a Glance

Agentmemory

Best For

ai

Pricing

freemium

Key Features

Persistent memory for AI coding agents, Runs locally, Zero external databases, 95.2% retrieval rate, 92% fewer tokens

Integrations

See website

Letta Agent

Pricing

paid

Key Features

Letta Code, a memory-first coding agent, scored 42.5% on Terminal-Bench. · The platform was renamed 'Letta Agent' from 'MemGPT' in July 2026. · It supports Git-based memory versioning and explicit control over memory allocation.

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