grai

The personal voice engine. Write like you. Prove it.

Deterministic cadence harness, Voice DNA profiler, and local-first HTML5 writing workbench.

Why the Name and Mark (grai)

grai (always written in lowercase) is the archaic Romanian word for the physical grain and living timbre of a human voice. It describes the unmistakable way a specific person speaks and thinks.

The grai mark fuses two symbols into a single broadsheet proofreader’s glyph:

1. The calligraphic loop and ear of a lowercase typographic g (drawn from classic European press type).
2. The mathematical symbol sigma (standard deviation). It anchors the core metric of our cadence engine: sentence-length burstiness (CV = sigma / mu).

1. The Blocklist Paradox (Empirical Audit of 134,522 LinkedIn Posts)

Across 3.5 years of continuous empirical tracking, we audited 134,522 organic LinkedIn posts across 1,499 verified founder profiles (LigoSocial dataset: continuous publishing over 3.5 years, minimum 2,000 followers, primary language English).

As awareness of synthetic copy spread, founders scrubbed mocked vocabulary words from their drafts. Yet structural…