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. # 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