OpenAI has confirmed that it's retiring ChatGPT's most popular model called GPT-4o and several other models, including GPT-5 Instant, GPT-5 Thinking, GPT-4.1, GPT-4.1 mini, and o4-mini. [...]

OpenAI previously confirmed that it's testing ads in ChatGPT for free and $8 Go accounts, and now we're seeing early signs of that rollout, at least on Android. [...]