Human-in-the-loop evaluation for trustworthy AI

Accelerate your evaluation. Get quality data from verified experts and taskers—in hours, not weeks.

Trusted by leading names in AI

Why Prolific for AI evaluations?

As foundation models start to match human capabilities, evaluation complexity has exploded. Prolific makes it easy to access the expertise and specialized AI taskers you need to evaluate sophisticated models—rigorously and at speed.

Data quality
Access verified experts and trained evaluators through our participant pool. Bypass the quality limitations of generalist annotators and unreliable marketplaces.
Speed
Get evaluation datasets and results in hours, not weeks. Launch instantly, scale dynamically, and maintain velocity without compromising rigor.
Workflow flexibility
Forget fragmented tools and processes. Integrate your systems through our API—or let our managed services team handle everything for you.

Tap into any human intelligence

Evaluate your AI systems with specialists who understand your domain requirements and edge cases.

Choose from 200k+ verified participants, including Domain Experts (STEM, programming, PhDs) and AI Taskers trained in evaluation protocols.

Automate evaluations at scale

Connect evaluations directly to your tools and systems with our API.

Or design your own evaluation tasks with AI Task Builder.

Choose how you want to collect your data

Self-serve through our platform with pay-as-you-go pricing to launch projects instantly. No subscription fees or minimum commitments.

Need end-to-end support? Use our managed services for participant sourcing, quality management, and project execution—so your engineers can focus on model development.

How fast-moving AI teams use Prolific

Trusted by AI/ML developers, researchers, and leading organizations across industries.

High-skilled annotators
Shovels used Prolific to find high-skilled, specialist participants to label building permits. These labels form the basis of quality datasets that become a baseline for the accuracy of their AI model.
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Shovels
Text-to-image AI models
Prolific’s streamlined participant management process meant the researchers could achieve a high level of engagement and satisfaction among participants. This was necessary for obtaining high-quality data.
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Carnegie Mellon University
Research the future of work
By offering a user-friendly platform, pre-verified participants, and advanced screening options, Prolific enabled Asana to immediately customize their target audience with extreme precision.
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Questions?

Get quality evaluation data for AI in hours, not weeks