Musk asked Grok about the probability of quantum computing cracking the Bitcoin algorithm (SHA-256), and Grok replied that it would be almost zero in

on August 3, based on IBM's release of research progress on quantum computing, Musk asked Grok about the probability of quantum computing cracking the Bitcoin algorithm (SHA-256). Grok replied that, according to evaluations by NIST, IBM, and experts for 2025, the probability of quantum computing cracking SHA-256 is "almost 0% in the next 5 years, and will be below 10% by 2035". This would require millions of error-correcting quantum bits; while current systems support only about 1,000 noisy quantum bits at most. The hash value of Bitcoin is currently still secure.