Defined.ai logo

Defined.ai

Challenger

Defined.ai is a global AI training data marketplace offering ethically sourced datasets across audio, image, video, text, and multimodal formats; 1.6M+ global contributors across 150+ countries; 1,200% marketplace data growth in 2025;

Best for: AI Training Data Marketplace
54
AI Score
Grade C
AI Visibility Score (Beta)
Artificial IntelligenceAI Training Data MarketplaceWebsiteUpdated October 2026

Company Overview

About Defined.ai

Defined.ai (formerly DefinedCrowd) is a Lisbon, Portugal-based AI data marketplace and training data platform founded in 2015 by Daniela Braga. The company operates the largest global marketplace of ethically sourced AI training data, providing enterprises with ready-to-use datasets across audio, image, video, text, and multimodal formats — all delivered via API for speed and scale. Defined.ai's mission is to accelerate responsible AI development by ensuring every dataset on its platform is sourced with explicit contributor consent, fair compensation, and full regulatory compliance.

Business Model & Competitive Advantage

The company's data marketplace connects AI teams at major enterprises and government agencies to a crowd of over 1.6 million global experts spanning 150+ countries and 500+ languages, dialects, and locales. In 2025, Defined.ai reported 65% revenue growth year-over-year, driven by rising global demand for compliant, high-quality AI training datasets as organizations scale foundation model development and fine-tuning programs. The Data Marketplace also saw a 1,200% increase in third-party partner datasets in 2025, reflecting the platform's security architecture, licensing controls, and immediate revenue generation potential for data contributors.

Competitive Landscape 2025–2026

Defined.ai holds ISO 27001 (information security), ISO 27701 (privacy information management), and ISO 42001 (AI management system) certifications, and is compliant with GDPR and HIPAA — making it one of the most compliance-certified AI data providers globally. The company serves more than 80 of the world's leading AI organizations and has been recognized by the World Economic Forum as a technology innovator. Its ethical sourcing model and compliance posture position it as a preferred partner for enterprises and government bodies with strict data provenance and privacy requirements.

Founded
2015
Headquarters
Lisbon, Portugal
Curated content • Fact-checked and verified

Key Differentiators

Strong Challenger

Defined.ai is an established challenger with significant market presence and competitive offerings in Artificial Intelligence.

Frequently Asked Questions

Estimated Visibility Trend (Beta)

Simulated 8-week rolling score

54
→ Stable

Based on estimated brand signals. Historical tracking coming soon.

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