F4 Industries
Y Combinator 2025 · Active Industrials f4.dev
The GD&T Analysis Platform for Engineering Drawings
Y Combinator's description, shown to identify the company. We rate the name, not the business.
Formerly F4, F4 Industries, F4
- Evocativity EVOC : yellow
- Industries hints at industrial work without identifying drawing analysis
- Brevity BREV : red
- 11 letters, 3 syllables. Up to seven letters is green, eight at two syllables too; up to ten yellow, eleven or more red.
- Greppability GREP : green
- Found inside 0 other dictionary words.
- Googlability GOOG : yellow
- The F4 code has many prior technical uses
- Pronounceability PRON : red
- The initial code requires letter-and-number reading
- Spellability SPEL : yellow
- Four may be written as a word or digit
- Verbability VERB : red
- The code phrase does not form a natural drawing-analysis verb
- Nominology
- 25
- All seven dimensions and .com ownership, weighted as set out on Methodology.
- Fluency
- 0
- Brevity and pronounceability only: the subset with published outcome evidence behind it.
- PG grade
- 3 / 4
- Graham's own four-step ladder.
- Exact .com
- Not owned
- Shape
- phrase
- Length
- 13 chars, 3 syllables
- Distinctiveness
- arbitrary
Watkins SCRATCH flags
- Curse-of-knowledge
- Hard-to-pronounce
Rubric version 2026.10.20-1, judged by gpt-6.1-sol (agent).
This scores the name only. See Methodology.
These judged dimensions came from an AI agent working through the judging queue in a chat, on the same rubric the scoring pipeline sends. The agent passed the calibration exam before its work was accepted, and each batch it judged hid two names with known answers as a check. The model is named as the agent reported it.