As of July 2026, ChatGPT offers a Free plan and a Go plan at $8 per month, both...

https://bizzmarkblog.com/does-chatgpt-go-get-gpt-5-6-sol-or-only-terra/

As of July 2026, ChatGPT offers a Free plan and a Go plan at $8 per month, both giving access to the GPT-5.6 Terra model. If you want faster response and priority access, Plus is $20 monthly and uses the GPT-6 Sol variant