OpenAI is introducing a free version of its Advanced Voice mode, powered by GPT-4o mini instead of GPT-4o.
The company states that the natural conversation pace and tone remain similar to the GPT-4o version while being more cost-effective to operate.
Starting today, we’re rolling out a version of Advanced Voice powered by GPT-4o mini to give all ChatGPT free users a chance to preview it daily across platforms.
— OpenAI (@OpenAI) February 25, 2025
The natural conversation pace and tone are similar to the GPT-4o version while being more cost effective to serve.
The natural conversation pace and tone are similar to the GPT-4o version while being more cost-effective to serve. OpenAI aims to provide a more accessible experience while maintaining high-quality conversational capabilities.





