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Frontier Model Training Infrastructure

Frontier Model Training Infrastructure

1
posts
2026

Fireworks AI now offers its frontier-lab training infrastructure as a managed service, starting with GLM 5.2. This service provides end-to-end batch invariance and zero KLD alignment between training and serving, enabling reliable reinforcement learning on large models. Previously, these capabilities were exclusive to top frontier labs.

2026

Frontier-lab training infrastructure, now as a service

6/24/2026

This post introduces the availability of Fireworks AI's internal frontier-lab training infrastructure as a managed service. It details the technical challenges and solutions for achieving batch invariance in Large MoEs and zero KLD across training and serving, specifically highlighting its application to GLM 5.2. The post emphasizes the importance of these features for successful reinforcement learning by demonstrating how numerical discrepancies can lead to reward collapse, contrasting it with the stable results achieved with the Fireworks stack.