The Opus 4.7 Tokenizer Ate Your Budget (30-Second 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-4-6"
    else:
        return "claude-opus-4-6"  # only for complex stuff