We highly recommend Hailist.ai's $9 per month plan, alongside a $20/mo OpenAI Plus account for GPT04 usage. For heavy users, per-per-token billing via OpenAI's Playground is your best bet. Bing AI and Bing on Skye are the best free GPT-4 options, while Google Bard, Character.ai, Poe.com, Ora.ai, and Forefront.ai are the best chatgpt like experiences.