Letta
A platform for stateful agents with long-term memory that learn and improve over time, from the team behind MemGPT.
About Letta
Agents forget what they learned once a conversation ends.
Who it’s for
- Developers building long-lived agents
- Researchers working on agent memory
When to consider it
Consider Letta when your agents must keep and build on memory across sessions.
Tradeoffs & limitations
- The open-source server is Apache-2.0 licensed.
SOTA overview · Documentation-based assessment · Sources & review method
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Sources & review method
Documentation-based assessment · Oct 1, 2026 · Prepared with AI assistance; not a hands-on benchmark.
Checked by SOTA · AI-assisted documentation review. Selection advice is our assessment; verify current requirements for your deployment.
Import history & original evidence
Letta official website
A platform for stateful agents with long-term memory that learn and improve over time, from the team behind MemGPT.
Based on official pages and announcements checked on 2026-10-01. No hands-on test, performance benchmark or popularity ranking is claimed.