As of July 2026, ChatGPT offers the Go plan at $8 per month and the Plus plan...

https://city-wiki.win/index.php/How_Much_Cheaper_Is_Cached_Input_on_GPT-5.5%3F

As of July 2026, ChatGPT offers the Go plan at $8 per month and the Plus plan for $20 monthly. Go users in the US will see ads during chats, so it’s not completely ad-free