Letta Cloud
Choose when the agent IS a long-lived stateful runtime. For bolt-on memory use Mem0/Zep.
Choose when the agent IS a long-lived stateful runtime. For bolt-on memory use Mem0/Zep. Strengths: Agent-owned memory model; OSS + cloud; Identity/stateful agents.
Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.
Choose when the agent IS a long-lived stateful runtime. For bolt-on memory use Mem0/Zep.
Strengths
- · Agent-owned memory model
- · OSS + cloud
- · Identity/stateful agents
Weaknesses
- · More runtime than pure memory API
- · Pricing mixes hosting + usage
- · Learning curve
Pricing notes
As of 2026-09-14: Stateful agent runtime (ex-MemGPT). Free tier BYOK + limited agents; Pro ~$20/mo; API plan ~$20/mo + ~$0.10/active agent/mo + tool-exec ~$0.00015/s (secondary/roundup figures as stored then). As of 2026-10-25 https://www.letta.com/pricing answers HTTP 200 to plain curl via redirects (301 to https://docs.letta.com/letta-code/pricing, then 308 to https://docs.letta.com/pricing), not bot-blocked; the docs page quotes 'Pro For personal use. $20 /month', 'API Plan For teams building on the Letta API. $20 /month Unlimited agents $0.10 / active agent / mo $0.00015 / sec tool execution' and 'Free plans are limited to 3 stateful agents.' Stored figures are not re-priced here; any price change goes through the reviewed --catalog step. OSS self-host Apache-2.0. Re-verify console before commits.
Sourced pricing
Contract status unavailable · no_sourced_price. Single normalized $/1M: null. Machine list: /api/pricing?provider=letta
No sourced SKU row. Notes above stay prose.
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