Elon Musk reacted after an internal version of OpenAI's Astra solved maths and theoretical computer science problems that had remained unsolved for at least a decade, writing, "Welcome to...Singularity. How’s the temperature?" Earlier, OpenAI CEO Sam Altman said the world had entered AI singularity, a situation wherein AI surpasses human intelligence and improves itself autonomously. In other news, the last photo of mountaineer Nirmal "Nims" Purja and his team surfaced online, showing the climbers moments before a deadly avalanche on Broad Peak; the photo was taken from the base camp on July 30 and showed the team climbing toward the 8,051-metre summit before all 10 members were killed. Sun Pharma issued a confidential letter to distributors asking them to recall multiple eye drop products in India amid a contamination scare, including Depopred2ML, Brinolar (BKC Free) and Brinzotim Eye Drops 5ML, and asked distributors to discontinue distribution and "immediately cease billing" as it withdraws all existing stocks "on priority". A stock rout worth trillions of dollars in South Korea's KOSPI rattled traders, with one saying, "I got completely swept up...I've engraved two rules...Don't invest in Korean stock market [and] follow the first rule," while another referred to President Lee Jae-myung's market reform, saying, "The government put fuel into the fire."