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Cost-of-Pass: An Economic Framework for Evaluating Language Models

Mehmet Hamza Erol, Batu El, Mirac Suzgun, Mert Yuksekgonul, James Zou

2025-04-21

Cost-of-Pass: An Economic Framework for Evaluating Language Models

Summary

This paper talks about a new way to judge how good language models are by looking at both how accurate they are and how much it costs to use them, especially when it comes to running them in real-world situations.

What's the problem?

The problem is that most people only look at how smart or accurate a language model is, but they don’t pay enough attention to how expensive or demanding it is to actually use the model, which is important for companies and developers who want to use AI efficiently.

What's the solution?

The researchers created a framework called Cost-of-Pass that measures both the accuracy and the cost of running language models. They found that making models more specialized for certain tasks, instead of just improving the way they run, is what really makes them more cost-efficient.

Why it matters?

This matters because it helps people choose and design AI models that not only work well but are also affordable and practical to use, which is important for making AI more accessible and useful in everyday life.

Abstract

The framework combines accuracy and inference cost to evaluate language models and reveals that innovation in specialized models, rather than inference techniques, drives cost-efficiency in AI deployment.