Mach9
Y Combinator 2021 · Active B2B Engineering, Product and Design mach9.ai
AI CAD Software for Civil Engineering
Y Combinator's description, shown to identify the company. We rate the name, not the business.
Formerly Mach9 Robotics
- Evocativity EVOC : yellow
- Mach suggests engineering speed rather than civil CAD
- Brevity BREV : green
- 4 letters, 1 syllable. Up to seven letters is green, eight at two syllables too; up to ten yellow, eleven or more red.
- Greppability GREP : yellow
- Found inside 153 other dictionary words.
- Googlability GOOG : yellow
- The Mach speed notation has prior technical meaning
- Pronounceability PRON : green
- The familiar Mach-number construction reads readily
- Spellability SPEL : red
- The number may be written as nine and Mach as mock
- Verbability VERB : red
- No natural civil-design verb
- Nominology
- 50
- All seven dimensions and .com ownership, weighted as set out on Methodology.
- Fluency
- 100
- Brevity and pronounceability only: the subset with published outcome evidence behind it.
- PG grade
- 2 / 4
- Graham's own four-step ladder.
- Exact .com
- Not owned
- Shape
- invented
- Length
- 5 chars, 1 syllable
- Distinctiveness
- suggestive
Watkins SCRATCH flags
- Spelling-challenged
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.