API references
Explore reference documentation for Qiskit and IBM Quantum APIs to learn how to use their endpoints, parameters, and operations.
Primary APIs
Core functionality for the use of Qiskit and IBM quantum computers.
Qiskit SDK
Open-source quantum information science and development toolkit
Qiskit Runtime
Interface to execute quantum computations on IBM quantum hardware
Qiskit Functions
Run pre-built services for application research, or build your own workflows with elastic classical compute
Quantum System
Interface to execute quantum computations on an on-premises IBM Quantum System via the underlying QPU and classical runtime
Qiskit addons
A collection of modular research capabilities that enable the discovery of new quantum algorithms.
Learn moreApproximate quantum compilation tensor
Supports the construction of high-fidelity circuits with reduced depth
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Reduces the depth of transpiled circuits by decomposing entangling gates between non-adjacent qubits
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Reduces the Trotter error of Hamiltonian dynamics through a weighted combination of several circuit executions
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Sample-based quantum diagonalization
Yields more accurate quantum system Hamiltonian eigenvalue estimations
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A collection of functionalities to supplement workflows involving one or more Qiskit addons
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Additional references
More resources to support your overall workflow.
Qiskit Transpiler Service
Transpilation services, including AI-enhanced transpiler passes
Error code registry
Full list of error code numbers, messages, and solutions
