# Anthropic is SpaceX's largest customer, paying $3.1 billion a month from December 2026

> Original title: Customer B has been revealed. Anthropic is SpaceX's largest single customer, overtaking NASA and the Pentagon for the first time. 34.5% o...

- Source: Andrew Curran
- Published: 2026-10-29T20:04:22.000Z
- Bad Influence: https://badinfluence.news/items/jpry8fz08gmtnfx7w7cnobwb3
- Original: https://x.com/AndrewCurran_/status/2115897550914158832

## Summary

Andrew Curran says Anthropic is SpaceX's largest single customer, overtaking NASA and the Pentagon for the first time. He says the compute-as-a-service client, identified as "Customer B" in a SpaceX filing, accounted for 34.5% of SpaceX's revenue last quarter. Curran adds that Anthropic has committed to spend up to $120.5 billion through 2029, with payments of $3.1 billion a month starting in December 2026.

## Post

Customer B has been revealed. Anthropic is SpaceX's largest single customer, overtaking NASA and the Pentagon for the first time. 34.5% of SpaceX's revenue last quarter was from compute-as-a-service to Dario Amodei, and Anthropic has committed to spending up to $120.5 billion through 2029. He will be paying Elon $3.1 billion a month starting in December 2026.

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