Recent minor incidents affecting OpenAI's ChatGPT, including elevated error rates on GPT-5.5 and brief partial outages for file uploads and API responses in early May, have kept trader sentiment tightly balanced between two and three total outage days. The large language model's high uptime of 99.82 percent signals improving infrastructure stability amid growing user loads, yet short disruptions on multiple dates underscore how quickly performance can degrade. With half the month remaining, traders weigh the potential for additional incidents against OpenAI's rapid mitigation patterns, making the closely matched 39 percent and 35 percent odds reflect uncertainty over whether the final count stays low or edges higher before May ends.