File summary most optimal way

I have .txt file and i want to summarize it with gpt 4 turbo and also perform some actions with it. How can i do it more optimally?

You can use ChatGPT and upload your file to be summarised.

If you want to do it programmatically you can use the API.

How does your optimal solution look like?

As the input size increases substantially, GPT-4 experiences a noticeable decline in response quality. For high-quality summaries, it’s advisable to create partial summaries of various topics and subtopics, gradually distilling the information.