Defined.ai

Ethical AI training-data marketplace — 1.6M+ contributors across 150+ countries and 500+ languages, used by Adobe, Amazon, Google, Meta, OpenAI.

AI Training AI Training Data / Machine Learning

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Seattle, WA, USA HQ

2015 founded

What is Defined.ai?

Defined.ai (formerly DefinedCrowd, rebranded 2021) is a Seattle-headquartered AI training-data marketplace founded in 2015 by Daniela Braga, PhD, with an R&D center in Lisbon, Portugal. The platform combines an ethically-sourced two-sided marketplace — 1.6M+ contributors spanning 150+ countries and 500+ languages, dialects, and locales — with custom services for data collection, annotation, evaluation, machine translation, conversational AI, and the Accelerat.ai multilingual agent product. Off-the-shelf and custom datasets are delivered across audio, image, video, text, and multimodal formats via API. Customers include Adobe, Amazon, Google, McAfee, Meta, and OpenAI. Compliance: ISO 27001, ISO 27701, ISO 42001, GDPR, and HIPAA. Two paths exist for individuals: full-time roles posted at https://definedai.applytojob.com/apply and crowd-contributor work via the company's contributor platform.

Mission & values

Empower AI builders with the world's largest ethical AI training-data marketplace — high-quality, fairly-sourced datasets and expert services across every modality and language.

Qualifications

Two engagement paths: (1) Full-time employee roles — currently 3 open, all 100% remote: AI/ML Sales Executive (US Enterprise), Computational Linguist (Spanish — LATAM), and Computational Linguist (Spanish — Spain). Glassdoor reports full-time pay around $50/hr in Seattle and $56/hr US average overall, with Linguist roles typically $25–$43/hr. (2) Crowd contributor work — paid project-based work in data annotation, transcription, audio recording, evaluation, translation, and similar tasks. Contributors are independent and join through Defined.ai's contributor platform; project rates vary by language, complexity, and locale. Eligibility: 18+, native or fluent in target language, reliable internet.

Leadership

Daniela Braga, PhD

Founder & CEO

Linguist and engineer with 25+ years in AI; World Economic Forum Global Innovator; appointed to the U.S. NAIRR Taskforce advising on national AI strategy.

Funding

StageSeries B

Total raised$63,400,000

Investors

Evolution Equity Partners Sony Innovation Fund Amazon Alexa Fund Portugal Ventures Busy Angels

Awards & recognition

Forbes AI 50

Forbes
Deloitte Fast 100

Deloitte
Inc. 5000 / Inc. 500

Inc.
Visionary Leadership Award (CEO Daniela Braga)

Puget Sound Business Journal
World Economic Forum Global Innovator (CEO Daniela Braga)

World Economic Forum