QCS QPU Gateway

The QCS Gateway is a service that provides high-availability, 24/7 connectivity to a QPU, even when that QPU is undergoing maintenance. This provides a seamless user experience, especially when using on-demand access. If the QPU is undergoing maintenance, your job will be queued until it is available and then run at the first opportunity.

Direct AccessQCS Gateway

When should you use it?

When you have a QPU reservation, strict latency requirements, and direct network access

All other times

Connection Routing

Direct connection to the QPU

Routes requests to QPUs

Network Access

Requires direct network access to Rigetti Lab (e.g. from QCS JupyterHub)

Accessible from more network locations

Request Latency

Minimum possible

Small (< 1ms) additional request latency


Not highly available; connection fails during service upgrade and maintenance. Uptime is only guaranteed during user reservation periods

Highly available; jobs may be submitted 24/7

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