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 agent-framework, library, orchestration
License Apache-2.0 Apache-2.0
Open source Yes Yes
Self-hostable Yes Yes
MCP support Yes Yes
Pricing freemium free
Starting price Self-host free BYOK usage cost
Models claude, gpt, gemini, byok byok
Languages python python
GitHub stars 23.5k 6.3k
Last activity 2026-06-26 2026-06-26