Client is using outdated header 'anthropic-beta': 'prompt-caching-2024-07-31'

[NumesSanguis]

Inspected claudette.Client?? on the SolveIt platform today and saw:

class Client:
    def __init__(self, model, cli=None, log=False, cache=False):
        "Basic Anthropic messages client."
        self.model,self.use = model,usage()
        self.text_only = model in text_only_models
        self.log = [] if log else None
        self.c = (cli or Anthropic(default_headers={'anthropic-beta': 'prompt-caching-2024-07-31'}))
        self.cache = cache

I would assume it is no longer beta after 1 year of introduction?