companies

Predibase

Built Ludwig and LoRAX, open-source tools for fine-tuning and cheaply serving hundreds of custom LLMs on shared GPUs; acquired by Rubrik in 2025.

Predibase was founded in 2020 by Piero Molino, Travis Addair, and Devvret Rishi, three engineers who met working on machine learning infrastructure at Uber. Molino had created Ludwig there, a declarative framework that lets people train deep learning models by writing a YAML config instead of raw PyTorch code, and Addair had co-authored Horovod, Uber's distributed training library. Predibase turned that experience into a commercial platform for fine-tuning and deploying open-source LLMs. The company's most influential open-source release is LoRAX, a serving framework that packs dozens or even hundreds of LoRA-adapted fine-tunes of the same base model onto a single GPU, loading adapters on the fly instead of dedicating hardware to each one. Combined with Ludwig, it let smaller teams fine-tune and run their own specialized models without the infrastructure bill that usually implies. Predibase raised roughly $28 million from investors including Greylock and Felicis Ventures before being acquired by the data security company Rubrik in June 2025, which now sells Predibase's technology as part of its AI agent tooling.

Founded

2020

Headquarters

San Francisco, United States

Sector

infrastructure