Ask HN: Free/Open Source Brainstorming Agents

Are you aware of any good Brainstorming agents I can converse with? Gemini has one but needs to have the Gemini Advanced for that.

Normal LLM also works out but would love to have a specialized AI for that. I love brainstorming with AI.

Is there anything special required for brainstorming except for system prompt? You can try providing new system prompt to my Claudine: