Build Hour: Agent RFT

Original Description

Agent RFT enables reasoning models to become even more powerful, tool-using agents by training directly on the workflows they will execute in production. By operating on agent rollouts, reasoning models can call tools, generate intermediate reasoning steps, and receive real-time feedback via customer-provided endpoints. This Build Hour will walk through the preparation, infrastructure, and safety oversight to use Agentic RFT.

Theophile Sautory (Applied AI) and William Hang (API Engineering) cover:

• Improving agent performance with optimization and fine-tuning options

• Key differences between Base RFT and Agentic RFT

• New additions and how Agent RFT works

• Task setup and live demos training with tools

• Customer spotlight on Cognition with Sampriti Panda (Research Engineer)

• Success stories featuring Ambience, Genspark, Mako, and Rogo

• Live Q&A

👉 Agent RFT Interest Form: https://tinyurl.com/agentRFT

👉 Follow along with the code repo: https://github.com/openai/build-hours

👉 Sign up for upcoming live Build Hours: https://webinar.openai.com/buildhours/

00:00 Introduction

01:34 Intro to Agent RFT

11:12 Task Setup

14:15 Demos: Training with Tools

31:33 Best Practices

35:15 Customer Spotlight: Cognition

44:58 Success Stories

51:16 Summary

52:33 Q&A