Suprmind offers a multi-AI chat platform letting you switch easily between GPT,...

https://suprmind.ai/hub/chatgpt/best-chatgpt-alternative/

Suprmind offers a multi-AI chat platform letting you switch easily between GPT, Claude, Gemini, Grok, and Perplexity—all in one place. At $19 per month Spark plan, it’s slightly cheaper than ChatGPT Plus at $20