Suprmind offers a multi-AI chat experience combining GPT, Claude, Gemini, Grok,...

https://zandersexcellentblog.quillnesty.com/posts/what-is-the-best-chatgpt-alternative-if-i-need-auditability-for-clients

Suprmind offers a multi-AI chat experience combining GPT, Claude, Gemini, Grok, and Perplexity models in one platform. At $19 a month, Spark costs less than ChatGPT Plus at $20. Try it free for 7 days with no credit card required