Editing How to optimize your OpenAI API token usage (section)

=== Constraining Bot Responses to Predefined Options ===
While it's acceptable to pose open-ended questions to explore the capabilities of ChatGPT, keep in mind that such questions can lead to longer, more creative responses that might increase costs. To achieve concise and cost-effective answers, (1) consider refining your question by providing specific and limited options for the AI to select from. 

(2) if not applicable, respond with N/A. This prevents responses with text outside the options. For example, when analyzing news articles to find key technology-related news summaries, if we don't predefine how the AI should respond when no relevant information is found, the AI might respond with variations like:

* NA
* None
* No major technology news today
* No major technology news reports today
* Due to lack of news content, unable to provide technology news summary

This variation in responses which not only uses additional tokens but also increases the effort needed for subsequent data cleaning.

For example:

* Initial question for exploration:
<pre>
Please offer five keywords for the following articles:

```
Long text
``` 
</pre>

* Refined question:
<pre>
Please select one of the following keywords: keyword1, keyword2, keyword3, keyword4, keyword5, for the subsequent articles:

```
Long text
``` 
</pre>