Marko Milojkovic

Marko Milojkovic

Startup and product studio founder

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Tastemaker
Tastemaker
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Gone streaking

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What's the biggest API cost difference you've found between LLMs?

Hey guys,
I built Test AI Models because I kept seeing wild cost variations for similar quality outputs on ChatGPT, Grok, DeepSeek and others.

Biggest one I've found so far for customer support case (images bellow):

  • ChatGPT: $6.654 cost for 1 mil queries

  • Claude: $4.947 cost for 1 mil queries

  • DeepSeek: $79 cost for 1 mil queries

  • Grok: $245 cost for 1 mil queries

In my mind they are similar quality outputs. But 84x more expensive!

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