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ThatLLM

ThatLLM

Compare AI models side by side in real-time

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ThatLLM lets you compare responses from multiple AI models simultaneously. Test the same prompt across OpenAI models, Gemini, Claude, Perplexity, and Grok to see which one gives you the best results. Perfect for developers, researchers, and AI enthusiasts who want to make informed decisions about which model to use for their specific needs. Stop switching between platforms and get side-by-side comparisons in real-time.
ThatLLM gallery image
ThatLLM gallery image
ThatLLM gallery image
ThatLLM gallery image
ThatLLM gallery image
ThatLLM gallery image
ThatLLM gallery image
ThatLLM gallery image
Free
Launch tags:Productivity•Developer Tools•Artificial Intelligence
Launch Team
Wispr Flow: Dictation That Works Everywhere
Wispr Flow: Dictation That Works Everywhere
Stop typing. Start speaking. 4x faster.
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What do you think? …

Aaditya Arora
Maker
📌
We built ThatLLM after spending way too much time copy-pasting the same prompts across ChatGPT, Claude, Gemini, and other platforms. As developers, we needed a faster way to figure out which model actually performed best for specific tasks - whether that was code generation, creative writing, or data analysis. What started as an internal tool for our team evolved into ThatLLM when we realized others were doing the same tedious workflow. Now you can test prompts across OpenAI, Claude, Gemini, Perplexity, and Grok in one place and see the results side-by-side in real-time.