How many tokens do you allow per session? I've been thinking about creating a similar app, but I'm a little bit concerned about the unintended costs.
So far, I found that each ~10 minute video uses around 1000 tokens. It costs me about 3 cents to summarize, which is not too bad as I don't have many users, and users haven't been requesting summaries for super long videos yet.
If this sites gets a lot of interest, I might start restricting something :)..
GPT 3.5 Pricing: https://openai.com/pricing