A agentindex
Comparison

Letta vs AWS Strands Agents

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

Letta

Stateful agents with long-term memory (formerly MemGPT).

  • + First-class long-term memory and stateful agents
  • + Lets agents persist and self-edit context
  • − Narrower focus than general orchestration frameworks
  • − Memory model adds complexity

AWS Strands Agents

AWS's model-driven, open-source agent SDK.

  • + Model-driven design keeps agents concise
  • + Tight AWS Bedrock and observability integration
  • − Leaned toward the AWS ecosystem
  • − Smaller community than LangGraph/CrewAI
Spec Letta AWS Strands Agents
Role Agent framework Agent framework
Tags agent-framework, library, multi-agent, memory, persona-solo-builder, persona-platform-engineer agent-framework, library, orchestration, persona-solo-builder, persona-platform-engineer
License Apache-2.0 Apache-2.0
Open source Yes Yes
Self-hostable Yes Yes
MCP support Yes Yes
Pricing freemium free
Price Free tier Free
Usage cost BYOK BYOK
Models claude, gpt, gemini, byok byok
Languages python python
GitHub stars 23.6k 6.4k
Last activity 2026-07-03 2026-07-03