Series B · AI & Machine Learning · San Sebastián, Spain · Founded 2019 · 300–400 employees
Multiverse Computing is a quantum AI software company headquartered in San Sebastián that leads in AI model compression and quantum software. The company has developed CompactifAI, an advanced AI model compression platform that delivers ultra-efficient models by applying tensor network techniques, enabling deployment of LLMs with 4x-12x faster performance and 50%-80% reduction in inference costs. Recently closed a massive €189M Series B funding round in June 2025 led by Bullhound Capital, HP Tech Ventures, and others, making it one of Europe's most promising quantum computing unicorns. The company serves over 100 global customers including Iberdrola, Bosch, Telefónica, and the Bank of Canada, with applications across energy, manufacturing, logistics, finance, and cybersecurity sectors.