ChatGPT’s free tier just got its biggest upgrade since 2022 with GPT-4o mini Android AuthorityOpenAI Releases GPT-4o Mini, a Cheaper Version of Flagship AI Model BloombergHow ChatGPT’s latest version can make you more productive at work Business InsiderChatGPT Maker OpenAI Goes Smaller and Cheaper With New AI Tech The Wall Street JournalOpenAI Slashes the Cost of Using Its AI With a ‘Mini’ Model WIRED