If AI Writes All the Code Then Why Did Anthropic Invest in Goodfire

Last week, it was all about OpenAI. The company’s new code interpreter, Windsor, had developers uploading tax returns, entire data pipelines, even medical workflows and watching ChatGPT write code like it was filling in a spreadsheet. Analysts dubbed it “the new Excel.” But barely a week later, the conversation has veered again.

Now it’s Anthropic’s turn. The Claude-maker just invested in a public benefit startup called Goodfire. And while Anthropic’s check was small, just $1 million, the implications are enormous. Goodfire isn’t offering a shinier chatbot or a faster copilot. It’s building Ember, a platform that lets developers reach inside a model and manually rewire its neurons.

Today, we're announcing our $50M Series A and sharing a preview of Ember - a universal neural programming platform that gives direct, programmable access to any AI model's internal thoughts. pic.twitter.com/asKBLKyZpA

— Goodfire (@GoodfireAI) April 17, 2025

Forget code. Forget prompts. Goodfire is going after the black box itself.