# TokenBudgetAdvisor: 40 tokens per request, 60 per user

alice asks short questions; "spent" is the usage the model reported:
  call 1: answered, spent=13, model calls=1
  call 2: answered, spent=26, model calls=2
  call 3: answered, spent=39, model calls=3
  call 4: answered, spent=52, model calls=4
  call 5: answered, spent=65, model calls=5
  call 6: refused (user alice has used 65 of 60 tokens), spent=65, model calls=5

bob pastes a stack trace of 103 estimated tokens:
  refused: prompt is about 103 tokens, the limit per request is 40
  model calls: 5 (was 5), bob's spent: 0

bob then asks a short question: answered, bob spent=13, alice spent=65