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The US government says inflation is running at 3.4%. A data platform processing up to 35 million price points per day says it’s closer to 2.33%. That’s not a rounding difference. It’s a gap large enough to change how investors think about Federal Reserve policy, interest rates, and the broader economic outlook.
Truflation, which launched its US inflation index in December 2021, published a TruCPI-US reading of approximately 2.26% to 2.33% annualized for September 2026. The Bureau of Labor Statistics’ official Consumer Price Index for August 2026, released on September 11, came in at 3.4%. The two numbers are measuring the same economy. They just disagree by more than a full percentage point.
Why the numbers diverge
The gap comes down to methodology, and the differences are substantial. The BLS constructs its CPI from roughly 80,000 survey data points, then applies seasonal adjustments and imputation techniques to fill gaps in the data. It’s a rigorous process, but it’s slow by design.
Truflation takes a different approach entirely. The platform aggregates between 13 and 35 million data points daily from over 30 commercial providers, covering actual transaction prices rather than surveyed estimates. Its weighting system is dynamic, shifting as real spending patterns shift. Seasonal adjustments are not applied.
The practical result is speed. Historically, Truflation’s readings have arrived roughly 41 days ahead of comparable BLS figures, with a correlation of 0.955 between the two series over time. When Truflation has made direct forecasts for official BLS releases, its average accuracy has landed within 0.09 percentage points of the final number.
Who built this and why it matters
Truflation was founded by Stefan Rust, whose stated mission is providing independent, verifiable inflation data outside the government measurement apparatus. The platform formally launched in December 2021 after winning a challenge issued by investor and Bitcoin advocate Balaji Srinivasan, who questioned whether a more accurate real-time inflation index could be built.
The company raised $6M in early 2024 and has since expanded beyond its flagship US index to offer broader macroeconomic indicators and an API for institutional data access. Ark Invest’s Cathie Wood is among the notable figures who have engaged with the platform.
Truflation has also introduced the Truflation Stream Network, which delivers its inflation figures on-chain. That matters for a specific but growing audience: smart contract developers and DeFi protocols that need reliable, manipulation-resistant price feeds for financial products built around inflation exposure.
What a one-point gap actually means for markets
If Truflation’s reading is closer to the true state of consumer prices than the BLS figure, the implications ripple outward quickly. A 2.33% inflation rate is essentially at the Federal Reserve’s 2% target. A 3.4% rate is not. Those two scenarios suggest very different paths for interest rate policy.
The Fed has been explicit that it needs sustained confidence in inflation’s return to target before cutting rates. If the real-time data is already there, and the official data is lagging by 41 days on average, then markets may be pricing in a more restrictive monetary environment than the underlying economy actually warrants. Equity valuations, bond yields, and credit spreads are all sensitive to that kind of miscalibration.
Truflation’s strong correlation with BLS outcomes over time suggests it isn’t simply measuring something different. It’s measuring the same thing earlier, which is a meaningful distinction when central bank guidance, inflation swaps, and Treasury yields are all priced off the official number. The platform’s growing adoption by financial institutions suggests the market is starting to treat it as a leading indicator rather than a fringe alternative.
Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy.
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