OpenAI logged 11 qualifying events in the US in the last 90 days, from 7 July to 5 October 2026, across six event classes. September carried ten of them. On 15 September OpenAI acquired Glass Imaging for $300 million (Yahoo Finance), and on 9 September it spent $22.5 million on academic research (Marcus on AI).
The capital story turned within a fortnight. On 15 September OpenAI was considering a round at a $1.2 trillion valuation ahead of a planned IPO (Investing.com); on 16 September it took the 2026 IPO off the table (Forkast News). By 30 September it was pursuing $30B at a $1.4 trillion valuation (CoinDesk Policy). The listing is off.
The legal file grew alongside. On 30 September OpenAI signed a voluntary accord with the US President covering external audits and board-level AI governance committees (Verdict Tech). Dario Amodei, CEO of Anthropic, said of the accord: “The technology has very real risks. And, you know, the mechanism, how we address those risks is still under discussion.” On 10 September OpenAI was reported as the target of a Florida criminal investigation opened in April 2026 (Forkast News). On 19 September a judge blocked its access to a confidential Apple settlement (Crypto Briefing), and on 2 October it faced copyright and product liability claims (Axios Pro Deals).
On 10 September OpenAI extended ChatGPT to 23 million US public-sector employees (Crypto Briefing), and on 25 September it terminated contractor positions after finding contractors using AI tools on human-review work (Computerworld).