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IonQ cost estimation

Overview

When submitting jobs to IonQ devices on QuREKA, credits are calculated based on gate count after circuit compilation and deducted immediately at the time of job submission. No manual confirmation step is required.

Credit Calculation

IonQ billing is calculated based on 1Q and 2Q gate counts in the compiled circuit and the number of shots.

Item Credit Rate
1Q Gate unit price 0.024675 Credit / Gate
2Q Gate unit price 0.16815 Credit / Gate
Minimum Floor – Debiasing OFF 3,868.485 Credit / Job
Minimum Floor – Debiasing ON 25,229.25 Credit / Job

Formula

Estimated Credit = (1Q Gate unit price × 1Q Gate count + 2Q Gate unit price × 2Q Gate count) × Shots

The minimum floor applies when the calculated amount falls below the threshold.

How It Works

1. Cost Estimation

Before submitting a job, QuREKA automatically performs a cost estimation based on gate count after circuit compilation. No credits are deducted at this stage.

2. Automatic Deduction and Execution

Once estimation is complete, credits are deducted immediately and the job is submitted for execution. No manual confirmation step is required.

3. View Results

Once the job is complete, you can check the execution results in Quantum Jobs. A full record of credit deductions is available in your credit history.

Debiasing (Error Mitigation)

Debiasing is an optional error mitigation feature provided by IonQ.

  • Enabling Debiasing raises the minimum floor charge to 25,229.25 Credits / Job.
  • Debiasing is enabled by default for jobs with 500 or more shots.
  • You can toggle Debiasing manually before job submission.

Estimating Credit Usage in Advance

To preview estimated credit costs before submitting a job, use the Cost Calculator in the right panel of the Quantum Server (Notebook) environment.

  1. Open your Quantum Server.
  2. Click the Cost Calculator icon in the right panel.
  3. Select the Gate-based QPU tab and choose Forte-1 (IonQ) as the quantum resource.
  4. Enter your circuit conditions: qubit count, 1Q gate count, 2Q gate count, and shots.
  5. Click Calculate estimated credits to preview the cost.

Important Notes

  • Credits are deducted at the time of job submission — no separate confirmation step
  • Gate count is finalized after circuit compilation; the actual deduction is based on the compiled circuit
  • Job submission will be rejected if your credit balance is insufficient
  • If submission fails after deduction, credits are automatically returned

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