Muse Ember at $0.10/$0.50: Default Is Max, the 200K Billing Cliff, and When to Pair It With Wonder

Meta Muse Ember is on the API today as muse-ember-1.0: $0.10/$0.004/$0.50 under 200K input, 3× rates on the whole request past that line, default reasoning is max, AA Index ~36. No chat call on this box.