Mio
Y Combinator 2016 · Active B2B Engineering, Product and Design m.io
Mio powers seamless communication between workplace chat apps.
Y Combinator's description, shown to identify the company. We rate the name, not the business.
Formerly Prompt, Message.io
- Evocativity EVOC : red
- Mio gives no clear workplace-chat integration cue
- Brevity BREV : green
- 3 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 145 other dictionary words.
- Googlability GOOG : red
- Different established navigation and beverage brands already use Mio
- Pronounceability PRON : green
- The simple mi-o pattern reads readily
- Spellability SPEL : yellow
- The unfamiliar vowel sequence needs confirmation
- Verbability VERB : red
- No natural chat-integration verb
- Nominology
- 45
- 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
- 3 chars, 1 syllable
- Distinctiveness
- arbitrary
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.