Vapi · Rate Limits

Vapi Rate Limits

Vapi documents concurrency limits per account and applies standard 429 throttling on the REST API. Concurrent call limits scale with plan/contract; specific RPS quotas are not publicly documented and should be confirmed with Vapi support.

2 Limits Throttle: 429

AIVoiceAgentsRealtimeCPaaSRate LimitingQuotasThrottling

Limits

Concurrent Calls account

concurrent_calls

scales by plan; contact support for higher concurrency

Vapi enforces a per-account concurrent active call cap.

API Requests account

requests

not publicly documented

Standard 429 backoff applies; verify limits with Vapi support before high-volume integrations.

Policies

Backoff Strategy

Clients should implement exponential backoff with jitter and honor any Retry-After header on 429 responses.

Concurrency Planning

Provision concurrent call capacity in advance for outbound campaigns and high-volume inbound use cases.

Sources

https://vapi.ai/pricing
https://docs.vapi.ai/