Abstract Quantum computing when combined with artificial intelligence (AI) offers a novel model of computation, which can overcome the fundamental drawbacks of classical systems in terms of complexity, scale, and energy consumption. Empirical evidence is scarce in the literature on quantum machine learning, as most studies mainly focus on theoretical advantages that are limited by hardware noise, short qubit coherence times, and NISQ-era constraints. This research is intended to compare quantum models of AI with hybrid quantum-classical AI models in terms of computational performance, performance improvement, and energy consumption. The article considers quantum neural networks and hybrid learning systems by applying quantum concepts to machine learning and optimization problems in healthcare, financial systems, IoT security, and scientific computing. Experiments indicate 35–47% improvement in pattern recognition accuracy, 62% reduction in training time, and 78% improvement in energy consumption, along with a reduction in computational complexity from O(N²) to O(N log N). The article provides relevant evidence of quantum benefits in accordance with NISQ criteria and presents a comparison between classical and quantum AI systems using benchmarks. The study confirms the possible use of quantum-driven AI in current limited scenarios, while fault-tolerant architectures and scalable quantum systems emerge as significant prospects for future research. Keywords Quantum Machine Learning, Quantum Neural Networks, Hybrid Quantum-Classical Computing, Quantum Optimization, NISQ Era, Quantum Advantage, Quantum Entanglement, Superposition, Quantum Gates, Variational Quantum Algorithms
Gupta et al. (Mon,) studied this question.
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