Letta · Rate Limits

Letta Rate Limits

Letta Cloud allows unlimited agents per account. Specific HTTP RPS limits are not publicly documented; Enterprise contracts unlock increased quotas. Self-hosted Letta has no Letta-imposed rate limits (only your infra capacity and downstream LLM provider limits).

2 Limits Throttle: 429
AIAgentsMemoryMemGPTStatefulRate LimitingQuotasThrottling

Limits

Agents account
agents
unlimited
Unlimited agents on API Plan (each active agent billed at $0.10/month).
HTTP Requests account
requests
not publicly documented
Standard 429 backoff applies on Letta Cloud.

Policies

Backoff Strategy
Clients should implement exponential backoff with jitter and honor any Retry-After header.
Self-Host for Bursty Workloads
Run the open-source Letta server on your own infrastructure to avoid Cloud quotas.

Sources