---
title: "How Much Does it Cost to Use an LLM?"
description: "Analyze AI costs across different LLM models, from 0.03¢ to 3.60¢ per query. Key pricing factors and trends for startups building AI applications."
categories: ["data analysis","AI"]
keywords: ["LLM costs","AI pricing","OpenAI","GPT-4","Llama2","AI applications","cost analysis","venture capital","Tomasz Tunguz","AI optimization"]
ai_summary: "Explore the cost variations of LLMs and factors influencing AI pricing for startups and developers."
date: 2023-11-16
lastmod: 2026-07-17
canonical_url: https://www.tomtunguz.com/gm-saas/
author: "Tomasz Tunguz"
---

How much does AI cost? It depends on a a few different dimensions, but for a [typical use case](https://docsbot.ai/tools/gpt-openai-api-pricing-calculator) where a user enters a query & expects about a 200 word response, the cost varies from 0.03c to 3.60c. 

![image](https://res.cloudinary.com/dzawgnnlr/image/upload/rul8xbftixtyejbafnzw.png)

Different models cost different amounts. Also, the size of the context window is an important factor. 

The context window is a fancy way of saying the quantity of background information the user can provide to the AI. 

When asking an AI to write a two-paragraph essay in the style of Hemingway, having a few sentences of his writing won't help much. But perhaps uploading one-third of the Old Man & the Sea imbues Ernest's style within the prose - no adverbs, simple direct sentences. 


![image](https://res.cloudinary.com/dzawgnnlr/image/upload/ffosc7h2l6tmhyiqxttr.png)
Longer tracts cost more. A 500 word essay totals 8.4c with the fanciest version of GPT-4 & 0.07c with Llama2, Facebook's open-source model.

There is a 120x difference in cost between the top of the line AI & the free version. 

Which is better? It depends on the use case & the amount of optimization one is willing to commit to the model.

These prices aren't fixed. Earlier this week, OpenAI announced a 3x reduction in costs - a trend that will continue as engineers optimize the chips, the algorithms, & the systems for AI. 

Relative to other infrastructure costs, these fees can be significant & understanding the gross-margin impact of this new layer of software will be essential, & will likely push startups from the more expensive larger models to more capital-efficient AI over time.