Verified Evidence: resolved · Fact Lock: locked · QA: pass
Anthropic kicked off its IPO roadshow and made a roadshow video available, according to Simon Willison’s Weblog, which reported the development in an article published on November 11, 2026.

The video includes an “Approach to compute” section featuring Anthropic co-founder Tom Brown. Simon Willison’s report says it describes the company training and serving Claude across four chip families: AWS Trainium, Google TPUs, NVIDIA GPUs and AMD GPUs.

An extracted transcript characterizes that as a multi-chip strategy, with separate software and inference stacks needed to support different platforms. The transcript says Anthropic began working with AMD GPUs for the first time “this year” and that Mythos got Claude running on AMD in three days with basically no human intervention, while Claude ported or wrote almost all of the kernels, according to the material reproduced by Willison.

Willison said Anthropic had not provided an official video transcript and that he extracted the reproduced version using MacWhisper. The supplied report does not provide IPO timing, valuation, offering size or filing details, so the roadshow video’s infrastructure disclosures are the main documented focus of the event.

SOURCES

  1. Simon Willison's WeblogAnthropic's IPO roadshow video