OpenAI's release of GPT-5 has sparked user frustration, particularly among ChatGPT Plus subscribers who are now limited to 200 messages per week, a restriction that prompted many to threaten subscription cancellations. In response, CEO Sam Altman announced a rate increase to 400 messages weekly and the return of legacy models. However, two red teams successfully exploited vulnerabilities in GPT-5, raising concerns about its enterprise readiness and leading experts to label it "nearly unusable" without modifications.