OpenAI has significantly reduced the cost of GPT-4o tokens to $4 per million tokens, a substantial decrease from the initial price of $36 per million tokens when GPT-4 was released in March 2023. This price reduction over 17 months makes the use of GPT-4o more affordable for applications requiring extensive model calls. For instance, an application using 100 tokens per second now costs only $1.44 per hour, which is lower than the minimum wage in the U.S. and many other countries. This reduction is expected to benefit developers and businesses looking to integrate AI solutions more cost-effectively.