Simulators

Beta

Prototype and debug on leading quantum simulators, then run the same code, unchanged, on real QPUs.

One platform, your choice of engine

Run on any engine from any of your favorite frameworks. Pick whichever engine best matches your workflow.

Quantum Rings logo

Quantum Rings Simulator

by Quantum Rings

Quantum Rings' simulator for large circuits, up to 128 qubits, with adjustable precision and speed-versus-accuracy settings.

Free during betaView details
Qiskit logo

Qiskit

by IBM

IBM's high-performance simulator for the Qiskit ecosystem, with fast, exact state-vector simulation plus density matrix, stabilizer, and MPS methods.

Free during betaView details
PennyLane logo

PennyLane

by Xanadu

Xanadu's high-performance C++ state-vector simulator for the PennyLane ecosystem, plus PennyLane's mixed-state and Clifford devices.

Free during betaView details
Google Quantum AI logo

Google's qsim state-vector simulator for the Cirq ecosystem, plus a quimb-based matrix product state engine for larger circuits.

Free during betaView details

Which simulator should I use?

Exact results at small scale

State-vector simulation tracks every amplitude, so the simulated state is exact. The trade-off is memory, which doubles with every qubit, so state-vector runs here stay under 30 qubits. PennyLane Lightning, Google's qsim, and Qiskit Aer all work this way.

Scale to larger circuits

Matrix product state (MPS) engines compress the quantum state instead of storing every amplitude, so they reach far larger circuits when entanglement stays modest. Quantum Rings and Cirq's MPS engine take this approach.

Qiskit Aer, PennyLane Lightning, Google's qsim, and the Quantum Rings simulator are the standard simulators from their respective ecosystems.

Prototype here, prove it on real QPUs

Execute circuits on leading quantum simulators. Circuits you run here can then go to real QPUs from IonQ, Rigetti, IQM, and AQT through the same API, with $50 of free quantum compute to start.

Missing an engine you rely on? Request a simulator and we will look into it.