OpenAI has faced repeated service disruptions in late September and early October 2026, with elevated errors hitting ChatGPT, Codex, the API, and features like data analysis, file creation, login, and Spaces. Status pages logged multiple incidents, including degraded performance on September 29–30 and October 1–2, alongside similar issues at competitor Anthropic. These events follow OpenAI’s developer conference unveiling new tools, amid scaling demands on its large language models and infrastructure. Traders monitoring outage markets should watch for root-cause analyses, mitigation speed, and any capacity strains from user growth or model updates that could trigger further downtime.