The most widely used quantum programming framework, maintained by IBM with a large global developer community. The v1.4 series received security support until March 2026, with full support now on v2.x+. The v2.x series introduced a C++ interface powered by a C-API, enabling HPC-accelerated error mitigation; v2.2 completed end-to-end C++ workflow support with the addition of a transpiler function. A 24% accuracy improvement in dynamic circuits at 100+ qubit scale was confirmed at IBM’s Quantum Developer Conference in November 2025.
Qiskit Functions, expanded in 2025, provides pre-built quantum services across chemistry, optimization, and machine learning. The framework covers educational use, research prototyping, and production application development, and carries the widest ecosystem and largest hiring premium across quantum industry roles.
Last modified 11 September 2026