The reason for not being able to see GPT, specifically GPT-5, could be due to the gradual rollout process OpenAI is using. GPT-5 is being released slowly and not available to all users simultaneously, with priority given to paid subscriptions like Plus, Pro, or Team plans. If a user is on a free account, access to GPT-5 is very limited. Also, the availability of GPT-5 can vary by device or platform—some users see it on mobile apps but not on desktop browsers, or vice versa. Other common reasons include not being logged into a paid account, needing to update the app or browser, browser cache or cookie issues, or server load problems. Troubleshooting steps that might help are checking for updates, trying different devices or browsers, clearing site data, logging out and back in, or reinstalling the app. Geographical restrictions or unsafe IP addresses might also cause access problems. In summary, inability to see GPT, especially GPT-5, is often a combination of the phased rollout by OpenAI, subscription status, device/platform differences, and local technical issues that can be resolved by updates or cache clearing.