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Language I/O is a software development company whose products allow clients to provide multilingual customer support to their customers.

languageio.comLinkedInUpdated Aug 10, 2026
Annual revenue
$6.3M
Oct 2024EST.
Total raised
$12M
3 rounds
Employees
68
Dec 2024

Language I/O revenue

Language I/O has not published its revenue. GetLatka estimates it at about $6.3M a year (October 2024).

$0
$2M
$4M
$6M
$3.9M
–
$6.3M
202220232024
ReportedEstimateOne figure per year; a reported figure wins over an estimate
All 2 revenue readings, with sources
As ofRevenueSource
Jan 2022$3.9M–
Oct 2024$6.3MEST.GetLatka estimate

– source not recorded

Language I/O funding rounds & investors

Language I/O has raised $12M across three rounds since 2019. The latest was a $6.5M Series A in January 2022.

DateRoundRaised
Jan 2022Series A$6.5M
Mar 2021Series A$5M
Oct 2019Seed$500K
Total raised$12M

Language I/O competitors

Language I/O competes most directly with Unbabel and Smartling.

CompanyRevenueFundingEmployeesCustomersFounded
Unbabel$84.4M$91.2M799500K2013
Smartling$39.7M$63.1M2965002009
Language I/O$6.3M$12M68–2011

Language I/O CEO, founders & employees

Heather Shoemaker founded Language I/O in 2011 and runs it as CEO. Language I/O had 68 employees (December 2024, LinkedIn).

0
20
40
60
40
–
68
202220232024
ReportedOne figure per year; a reported figure wins over an estimate
All 3 headcount readings, with sources
As ofEmployeesSource
Dec 202468LinkedIn
Oct 202440LinkedIn
Jan 202240–

Language I/O FAQ

What is Language I/O's revenue?

GetLatka estimates Language I/O's revenue at about $6.3M a year (October 2024). The company hasn't published its own figure.

How much funding has Language I/O raised?

Language I/O has raised $12M across three funding rounds. The latest was a $6.5M Series A in January 2022.

How many employees does Language I/O have?

Language I/O had 68 employees in December 2024, according to LinkedIn.

Who is the CEO of Language I/O?

Heather Shoemaker is the CEO of Language I/O and founded the company in 2011.

Who founded Language I/O?

Heather Shoemaker founded Language I/O in 2011.

How this page is sourced

2 from public sources · 1 estimate. Founder figures link to the second they were said; public figures name their source; estimates are marked EST. and say whose they are. Not financial advice.

Updated Aug 10, 2026Data disclaimerReport a correctionClaim this profileRun Language I/O? Join the podcast