Yeah this is true. I could have sent the entire book up until that point as context. But doing that 100 times (once per chapter) would have meant sending roughl

Yeah this is true. I could have sent the entire book up until that point as context. But doing that 100 times (once per chapter) would have meant sending roughly 50x the length of the book as input tokens (going from 0% to 100% as the book progressed). This would be fine for a cheap model, but GPT 4.5 was not cheap! I would have liked to have fewer, longer chapters, but my (few) experiments at getting it to output more tokens didn't have much impact.