OpenAI's ChatGPT service has maintained strong overall uptime near 99.65% in recent months, with the official status page reporting full operations as of late September 2026. Trader sentiment reflects a pattern of frequent but brief degraded performance incidents, including elevated error rates on September 23–25 affecting ChatGPT conversations, mobile features, and Codex workflows that resolved within an hour. These stem from scaling demands on large language models amid rapid feature rollouts and user growth. Minor issues like conversation loading errors continue to appear in user reports, though no prolonged global outages have occurred since early September. Key upcoming catalysts include potential model updates or infrastructure changes that could influence short-term stability.