Subvolts take Learn how human and AI judges train AI models for real-world use. Nov 6, 2025
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Developers
Learn how to design evaluation systems and use human-in-the-loop processes to improve AI model performance and safety.
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Understand the practical steps and considerations for training and deploying reliable AI models for enterprise use cases.
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This episode features the CEO of a key AI training data provider discussing practical methods for AI development and validation.

#298 Ryan Kolln: How Appen Trains the World's Most Powerful AI Models

51 min Interview Hosts: Craig S. Smith
0:0051:01

Audio streams from Craig S. Smith. Your place is remembered on this device.

From Subvolts

Summary and analysis by Subvolts editorial, AI-assisted.

Summary

Eye on AI episode #298 features Appen CEO Ryan Kolln discussing how powerful AI models are trained and validated. Kolln explains the process involves rigorous human evaluation, culturally aware data, and AI judges to ensure real-world performance, usefulness, and safety. The conversation covers building evaluation systems beyond static benchmarks, the role of human raters and AI evaluators working together, and the importance of localization for AI reliability.

Explained simply

This episode explains how companies like Appen use people and AI to test and improve powerful AI systems. It's like having many smart reviewers check if an AI works well and safely in different situations before it's used by businesses.

Why listen

This episode offers insight into the complex, human-intensive process behind training and trusting advanced AI models. It's for AI professionals, enterprise leaders, and anyone curious about the practicalities of AI development beyond theoretical concepts. The discussion on evaluation, safety, and scaling connects directly to the ongoing efforts by frontier labs like Google Gemini, OpenAI, and Anthropic to deploy reliable AI systems in real-world applications, especially as AI moves towards agentic workflows.

On the mic
  • HostCraig S. Smith
  • GuestRyan KollnCEO, Appen
About
Key facts
  • Episode Title: #298 Ryan Kolln: How Appen Trains the World's Most Powerful AI Models
  • Show: Eye on AI
  • Guest: Ryan Kolln, CEO of Appen
  • Length: 51 minutes
  • Key Process Elements: Rigorous human evaluation, culturally aware data, model-based judges
  • Evaluation Goals: Usefulness, safety, and reliability in production
Show notes from Craig S. Smith

This episode is sponsored by AGNTCY. Unlock agents at scale with an open Internet of Agents.

Visit https://agntcy.org/ and add your support.

How do the world's most powerful AI models get trained and trusted at scale, and what does that really take from data to deployment?

In this episode, Appen CEO Ryan Kolln joins Eye on AI to unpack how rigorous human evaluation, culturally aware data, and model-based judges come together to raise real-world performance.

In this episode of Eye on AI, host Craig Smith speaks with Ryan Kolln, CEO of Appen, about building evaluation systems that go beyond static benchmarks to measure usefulness, safety, and reliability in production. They explore how human raters and AI evaluators work in tandem, why localization matters across regions and domains, and how quality controls keep feedback signals trustworthy for training and post-training.

Ryan explains how evaluation feeds reinforcement strategies, where rubric-driven human judgments inform reward models, and how enterprises can stand up secure workflows for sensitive use cases. He also discusses emerging needs around sovereign models, domain-specific testing, and the shift from general chat to agentic workflows that operate inside real business systems.

Learn how leading teams design human-in-the-loop evaluation, when to route judgments from models back to expert reviewers, how to capture cultural nuance without losing universal guardrails, and how to build an evaluation stack that scales from early prototypes to production AI.

Stay Updated: Craig Smith on X: https://x.com/craigss Eye on A.I. on X: https://x.com/EyeOn_AI

Jargon decoded
benchmarks
Ryan Kolln
standard tests used to compare AI performance
localization
Ryan Kolln
adapting AI to specific languages and cultures
reinforcement strategies
Ryan Kolln
methods to improve AI by rewarding good behavior
agentic workflows
Ryan Kolln
AI systems that can perform tasks autonomously within business systems
Published
Show
Eye on AI · Craig S. Smith
Length
51 min
Companies
Google, OpenAI, Anthropic
Summary by
Subvolts, using an AI model (how we work). Spotted a mistake? Tell us.

Questions people ask

How are powerful AI models trained and trusted?
They are trained using rigorous human evaluation, culturally aware data, and AI judges to improve real-world performance, usefulness, and safety.
What is the role of human raters and AI evaluators?
Human raters and AI evaluators work together to build evaluation systems that go beyond static benchmarks to measure AI usefulness, safety, and reliability in production.

Page generated Oct 19, 2026. Summaries are Subvolts' own; the audio, artwork and notes belong to Craig S. Smith.