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).
Letta Rate Limits is the machine-readable rate-limit profile for Letta on the APIs.io network, conforming to the API Commons Rate Limits specification.
It captures 2 rate-limit definitions, measuring agents and requests.
The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.
Tagged areas include AI, Agents, Memory, MemGPT, and Stateful.
2 Limits
Throttle: 429
AIAgentsMemoryMemGPTStatefulRate LimitingQuotasThrottling
Limits
Agents account
unlimited
Unlimited agents on API Plan (each active agent billed at $0.10/month).
HTTP Requests account
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
Work with this as data
Every rate limit here is available over the APIs.io API and to AI agents over MCP.