It compiles on the simulator. Will it run on the machine?

Paste your OpenQASM and the calibration block for the device you have booked. Before you sign in, this page reads the circuit properly — it expands your loops onto the qubits each iteration actually touches, costs every foreign gate against the device's own basis, walks the coupling map to see what routing adds, puts the critical path next to T1 and T2, and does the shot and gradient arithmetic. Then three lanes work the run itself.

Both examples ship with a saved model run for every lane, so you can see all three outputs end to end without signing in and without spending a credit.

The circuit — OpenQASM 2.0 or 3.0 nothing pasted yet

Drag a .qasm file in, or Read in your browser. Nothing uploads until you run a lane.

The target device — its calibration data, as key: value lines no device profile

Start from a preset

Also accepted: all-to-all, linear and ring for the coupling, percentages for error rates, us/ms units for times, and t1_us[3]: 45 for one bad qubit. Drag a file in, or A field you leave out is reported as not assessable, never as a pass.

What the run is for

Target standard error — expectation and variational lanes

Shots per circuit — leave blank to derive from the precision

Optimiser steps — variational only

Anything the files do not say — the booking you have, the reviewer's ask, what you already tried

Paste a circuit to price the run.

The model's raw reply

The structured parse failed twice, so here is the reply verbatim rather than nothing.

It compiles on the simulator. Will it run on the machine?

Instant read — free, in your browser, no model

Where the lane and the browser disagree

Findings

Every free-read flag, accounted for

What you told it, checked against the circuit

Not assessable from what was supplied

Summary

The model's raw reply

Your past runs

How this was produced