The Opus 4.7 Tokenizer Ate Your Budget (30-Second Fix)

Opus 4.7 uses a new tokenizer. Same code, same prompt, 25-35% more tokens. If your Claude bill jumped this week, that's why. The Fix # Before: everything goes through Opus response = client . messages . create ( model = " claude-opus-4-6 " , ...) # After: match the model to the task def pick_model ( task_type ): if task_type in [ " rename " , " format " , " docstring " ]: return " claude-haiku-4-5-20251001 " # 60x cheaper elif task_type in [ " implement " , " fix_bug " ]: return " claude-sonnet-