AI weekly recap: OpenAI scraps GPT-6.1 Astra, Gemini 4 Argon debuts, six labs sign White House accord
Between 28 September and 5 October 2026, OpenAI launched Dots agents and GPT-6.1 Sol but scrapped GPT-6.1 Astra after safety tests. Google released Gemini 4 Argon to cybersecurity partners only, six AI companies signed a voluntary White House accord, and Anthropic's IPO filing was reported.