XBOW says GPT-5.6 Sol helped build a $250,000 Chrome exploit in six days

AIGreg Brockman says XBOW, using GPT-5.6 Sol, built a full-chain Chrome exploit in 6 days for about $40,000 of compute. Google awarded a $250,000 bounty, the first under its 2026 rules, for the exploit, which the post says could affect about 1 billion Chrome users on Windows. Brockman says defenders should test their own code first, and XBOW is developing an autonomous product for testing compiled software.