I am working on MultiLLM interface.
I kept running into the same problem while using ChatGPT.
I was writing a prompt, then end up pasting it into multiple LLMs to compare responses.
So I built an app that does that for you, one prompt in, multiple LLM models respond to your query, side by side in real time.
I have added ChatGPT, Claude and Gemini for now in my app.
How it works
- Type a prompt, hit Submit, and watch responses stream in side by side
- Save, edit, and pin conversations
- Full‑text search across past prompts and responses
- Bring your own API keys (add keys from each provider inside the app)
I built this tool for my personal use first and I am using it daily now.
Product Link: MultiLLM.pro
Happy Prompt Maxing!

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