September 2025 — Fed Language Drift
September 17, 2025
On September 17, 2025, the FOMC statement scored 13.6 for commitment density and 52.3 for epistemic certainty. Against the prior meeting, commitment held roughly steady and certainty held roughly steady. The press conference scored 13.0 and 50.4 on the same two measures.
What the statement committed to
Commitment density measures how much of the statement binds the committee to action rather than describing conditions. This meeting reads 13.6, little changed from 13.7 at the previous meeting.
How certain the statement sounded
Epistemic certainty measures how much certainty the language carries relative to doubt markers (certainty − 0.5×doubt, scaled). This meeting reads 52.3, little changed from 52.2 at the previous meeting. Higher means more certainty, not more hedging.
Commitment density and epistemic certainty across the trailing meetings. Commitment rises as the language binds the committee to action; certainty rises as certainty markers outweigh doubt markers. This meeting is highlighted.
Proof
This result was sealed in a signed, tamper-evident receipt at the moment it was scored. The receipt below attests to the numbers on this page.
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