The CPI Forecast Scoreboard — every print, every forecaster, graded

Before each CPI print we put a forecast on the record and grade it after, misses included. Our headline call is the Nowflation CPI Forecast, an error-weighted blend of our in-house model, the Cleveland Fed nowcast and the Street consensus, each weighted by its graded track record. The in-house model's vintage-true backtest covers 86 prints (2019-01 to 2026-05) at 0.161pp mean absolute error vs 0.329pp for a naive baseline; the blend is tighter still. Nowflation's record to date is an honest vintage-true backtest — June is our first live call.

Our first live call — June CPI (grades Fri, 11 Sep 2026 12:30:00 GMT)

The Nowflation CPI Forecast (our error-weighted ensemble) for June headline CPI YoY is 3.3%, with our independent in-house model at 3.2%; Cleveland Fed 3.4%, Kalshi 3.4%. Pre-registered with a dated, immutable receipt at /forecasts/2026-06.json.

League table — headline CPI YoY, mean absolute error (lower is better)

ForecasterPrintsMAE (pp)Closest-call %
Street Consensus430.08849%
Cleveland Fed430.10530%
Nowflation Model410.14122%
Nowflation Forecast20.1610%
Kalshi Market20.1810%

Recent graded prints (headline CPI YoY)

PrintActualStreet ConsensusCleveland FedKalshi MarketNowflation ForecastNowflation Model
2026-073.4%3.4%3.65%3.347%3.421%3.46%
2026-063.5%3.8%3.65%3.809%3.8%4.025%
2026-054.2%4.2%4.18%4.255%
2026-043.8%3.7%3.565%3.686%
2026-033.3%3.3%3.252%3.34%
2026-022.4%2.4%2.406%2.49%
2026-012.4%2.5%2.364%2.422%
2025-122.7%2.7%2.573%2.44%

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