GPU prices moved 7% in one evening. Daily charts would never show it.

On August 10, 2026 — the Index’s own base day — the official close printed 100.0. By late evening the live print stood at 106.7: the basket, revalued at each provider’s freshest observations, had moved almost 7% inside a single day. A daily chart renders that entire drama as one flat dot.

The move was real and explainable: evening marketplace conditions. Marketplace supply breathes — hosts come online and off, cheap offers get rented first, and what remains listed skews pricier at peak hours. List-price providers hold flat through it; the marketplace leg of the basket does not. Daily medians are the right instrument for the trend (that’s why the official series is daily and the methodology never mixes the two), but they smooth away the texture — and the texture is information: when to launch an interruptible job, how tight evening supply runs, how much the “price” of a GPU-hour depends on when you ask.

So the site now carries both resolutions, honestly separated. Every chart has 24H and 7D ranges built from hourly two-stage medians — the same math as the daily series (per-provider median first, then across providers), just bucketed by hour, one point per scrape wave. The homepage hero draws the live print as an hourly line until the daily series grows into its own. The official published series is untouched: daily closes, computed the same way as always, with the hourly layer labeled as what it is.

Watch it yourself: any SKU page → 24H. If the line is flat, that’s a list-price provider holding. If it breathes, you’re watching a marketplace do what marketplaces do — hourly, because we collect hourly, because that’s the resolution at which this market actually moves.