Can anyone recommend a good AI tool for brainstorming startu

[Jaceno]

I am mapping out a new business and need a smart sounding board. Talking to just one model leads to repetitive ideas. I wanted to bounce thoughts off different models for diverse perspectives. I started using a multi-model platform that is perfect for this. I can see what Llama says and compare it to Gemini. I use https://overchat.ai/ for brainstorming sessions now. It really breaks creative blocks. What is your method for generating fresh ideas?