OpenAI will make its GPT-4o model available again for ChatGPT Plus subscribers after replacing it with GPT-5, following complaints from users who said the change was abrupt and unwelcome.

Chief executive Sam Altman confirmed that subscribers can choose between the two models, adding that the company will monitor usage before deciding how long to keep older versions available.

The decision comes days after the debut of GPT-5, which was introduced without the option to select previous models manually.

Some users said they valued the continuity and emotional connection they had formed with GPT-4o, describing it as unique and meaningful instead of simply replaceable. Others preferred having the freedom to select a model manually rather than relying on a default.

Altman acknowledged that GPT-5's performance appeared weaker at times, attributing it partly to a temporary malfunction in the automatic switching system.

He also said adjustments are being made to improve how the system selects the most suitable model in different scenarios.