MosaicML (Databricks)

Enterprise ML training platform — train and fine-tune LLMs at scale, now part of Databricks

MosaicML was a leading platform for training and fine-tuning large language models at scale, acquired by Databricks in 2023 for $1.3B. MosaicML's technology (Composer training framework, streaming datasets, MPT models) is now integrated into Databricks' ML platform. Teams use it for efficient LLM training with techniques like FlashAttention, gradient checkpointing, and sharded training across hundreds of GPUs.

Key specs

1,300,000,000 Acquisition price source

as of 2026-03-27