It's the first official smartphone app for the chatbot, joining a crowded field of third-party mobile AI software which also taps into the GPT-3.5 and GPT-4 APIs powering ChatGPT. It also allows switching between standard and GPT-4 language models for ChatGPT Plus subscribers, as well as conversation history (synced from your the desktop if you sign in with the same account) and the ability to export data and delete or rename conversations. It's only available in the US for now, but the company says it will expand to additional countries "in the coming weeks." At the same time, there are reports some tech companies are wary of staff using AI chatbots. In early April, The Economist Korea reported three Samsung employees shared confidential information with ChatGPT.)

It's the first official smartphone app for the viral language model, joining a crowded field of third-party mobile AI software vying for your attention -- many of which tap into the GPT-3.5 and GPT-4 APIs powering ChatGPT. It's only available in the US for now, but the company says it will expand to additional countries "in the coming weeks." Feature-wise, OpenAI's app looks and behaves much like the ChatGPT website -- with the addition of voice input using OpenAI's Whisper speech recognition. It also allows switching between standard and GPT-4 language models for ChatGPT Plus subscribers, as well as conversation history (synced from the desktop if you sign in with the same account) and the ability to export data and delete or rename conversations. However, the company's recently launched plugins, including live web access, are absent.