Defined.ai

AI Training Data Platform for Enterprise AI

Seattle, United States · Founded 2015 · $66.6M raised

Headquarters
Seattle
Founded
2015
Business Model
B2B
Website
defined.ai
Total Funding
$66.6M
Last Round
$15.0M Extension RoundJan 2022
Rounds
3

Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.

About

Defined.ai is a global technology company focused on enabling responsible AI through ethical data sourcing, operating as the leading marketplace for ethical AI training data that helps AI teams build, scale, and deploy high-quality models with confidence. Founded in 2015 by CEO Daniela Braga in Seattle, Washington, the company has raised over $85 million in funding and works with a global network of 1.6 million+ experts across 150+ markets.

Summary

Defined.ai is an Artificial Intelligence company based in Seattle, United States, founded in 2015. It has raised $66.6M in total across 3 rounds, most recently a $15.0M Extension Round in Jan 2022. Investors include Semapa Next, Hermes GPE and Evolution Equity Partners.

Tech & App Stack

6 technologies & apps tracked

Every product and vendor across these categories, with where each signal came from.

Create a free account with 25 free credits every month, no card needed, to unlock the full tech & app stack, funding history, and valuations.

Funding History

Debt FinancingDebt FinancingJan 2024
$3.3M

Sign up to see all 4 events

Funding: Seed through Extension Round. Amounts, valuations, and investors where available.

Investors

Similar Companies

OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artifi...

San Francisco, United States5001–10000Artificial Intelligence, Generative AI
Corporate RoundTotal funding$179.6BMar 2026
Anthropic

Anthropic develops reliable, interpretable, and steerable AI systems, translating frontier safety...

San Francisco, United States1001–5000Artificial Intelligence, Generative AI
Series G+Total funding$123.7BMay 2026
xAI

xAI builds AI systems, including Grok, with frontier reasoning, voice, and generative media capab...

San Francisco, United States201–500Artificial Intelligence, Generative AI
Series ETotal funding$47.4BJan 2026
Waymo

Waymo is an autonomous driving technology company with a mission to make it safe and easy for peo...

Mountain View, United States1001–5000Artificial Intelligence, Autonomous Vehicles
Venture RoundTotal funding$29.6BFeb 2026
Databricks

Databricks provides a unified data and AI platform that helps enterprises build and run applicati...

San Francisco, United States10001+Analytics, Artificial Intelligence
Series G+Total funding$20.0BJul 2026
Project Prometheus

AI company focused on applying artificial intelligence to physical tasks, launched with $6.2B ini...

San Francisco, United States51–200Artificial Intelligence, Manufacturing
Series BTotal funding$18.2BJun 2026

Your company? Embed this profile

Add the live badge to your site — it stays current as your funding data updates.

Defined.ai on Indexed.vc
<a href="https://indexed.vc/companies/defined-ai"><img src="https://indexed.vc/api/badge/company/defined-ai" alt="Defined.ai on Indexed.vc" width="260" height="76" /></a>