Suprmind offers a way to use Grok alongside GPT, Claude, Gemini, and Perplexity...

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

Suprmind offers a way to use Grok alongside GPT, Claude, Gemini, and Perplexity in a single thread, making it easier to compare answers side by side. Plans start at $19 with the Spark tier and include a 7-day trial with no credit card required