Baseten is reportedly close to completing a $1.5 billion funding round, which would value the company at up to $13 billion, according to reporting cited by The Wall Street Journal and covered by multiple outlets. The planned raise is described as dual-tiered: some investors would participate at an $11 billion valuation, while others would invest at a $13 billion valuation.

The funding is tied to Baseten’s role in AI infrastructure for inference—running and optimizing AI models. One outlet describes Baseten as providing an inference software layer that helps customers run, optimize, and train open-source AI models. Another outlet characterizes investor interest as increasing alongside demand for AI inference services, referring to a growing “inference gold rush.”

The reports largely focus on the size and structure of the round, while also emphasizing that Baseten’s platform is built to support customers using open-source models at scale. No information in the provided excerpts specifies the full list of investors, the final closing terms, or how the funds will be allocated after the round is completed.