Letta vs Supermemory

Pick two tools from the same category to compare side-by-side.

	Letta Stateful agent memory framework (formerly MemGPT); core+archival tiers.	Supermemory Closed-source universal memory API that adds long-term, personalized memory to AI agents and apps.
Category	memory	memory
Vendor type	open source	commercial
Pricing	freemium	freemium
Strengths	+ Mature memory architecture (core/archival/recall tiers) + Open source with managed option + Designed for long-lived agents	+ Single API covering extraction, profiles, contradiction resolution, and forgetting + Byte-level deduplication lowers cost on repeated agent-loop content + MCP server and integrations for coding-agent memory workflows + Free tier with usage-credit billing across paid tiers
Tradeoffs	− More setup overhead than simple memory layers	− Closed-source proprietary service with no self-hosting − Usage-based pricing can be hard to predict at scale − Benchmark leadership claims are largely self-reported
Used in stacks	0	0