Every known limitation of the model and the product, stated before you find it — with what each one means for how you should read the numbers.
The full document is available to signed-in users on any plan — a free account is enough. It is a licensed copy for your organisation; please do not redistribute.
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Public record, no sign-in needed: the held-out note (2025 + 2026H1) · the pre-registration record · the measured quarterly index.