# 关于xAI与Anthropic数据中心合作的观察

- 来源：Simon Willison 博客
- 发布时间：2026-05-08 01:09
- AIHOT 分数：70
- AIHOT 标记：精选
- AIHOT 链接：https://aihot.virxact.com/items/cmovrhv3q00l1slotthpumg8d
- 原文链接：https://simonwillison.net/2026/May/7/xai-anthropic

## 精选理由

Anthropic租下Colossus 1不仅是一次商业合作，更暴露了算力短缺下的伦理妥协，而xAI突然砍掉Grok 4.1 Fast则提醒开发者别把鸡蛋放一个篮子里。

## AI 摘要

Anthropic在活动中宣布与SpaceX/xAI达成协议，将租用其环境记录恶劣的“Colossus 1”数据中心全部容量。该数据中心曾因燃气轮机无许可运行而污染空气，并关联到居民健康问题，此举在数据中心已成政治敏感议题的背景下引发争议。同时，xAI宣布将于2026年5月15日停用Grok 4.1 Fast等多个模型，仅提前两周通知，招致用户不满。Elon Musk解释称，出租是因为认可Anthropic确保AI“对人类有益”的努力，但保留在AI“危害人类”时收回资源的权利。

## 正文

Simon Willison’s Weblog

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Notes on the xAI/Anthropic data center deal

7th May 2026

There weren’t a lot of big new announcements from Anthropic at yesterday’s Code w/ Claude event, but the biggest by far was the deal they’ve struck with SpaceX/xAI to use “all of the capacity of their Colossus data center”.

As I mentioned in my live blog of the keynote, that’s the one with the particularly bad environmental record. The gas turbines installed to power the facility initially ran without Clean Air Act permits or pollution control devices, which they got away with by classifying them as “temporary”. Credible reports link it to increases in hospital admissions relating to low air quality.

Andy Masley, one of the most prolific voices pushing back against misleading rhetoric about data centers (see The AI water issue is fake and Data center land issues are fake), had this to say about Colossus:

I would simply not run my computing out of this specific data center

I get that Anthropic are severely compute-constrained, but in a world where the very existence of “AI data centers” is a red-hot political issue (see recent news out of Utah for a fresh example), signing up with this particular data center is a really bad look.

There was a lot of initial chatter about how this meant xAI were clearly giving up on their own Grok models, since all of their capacity would be sold to Anthropic instead. That was a misconception—Anthropic are getting Colossus 1, but xAI are keeping their larger Colossus 2 data center for their own work.

Update 11th June: Anthropic later turned out to have booked capacity in Colossus 2 as well, and Google also bought capacity from xAI.

As an interesting side note, the night before the Anthropic announcement, xAI sent out a deprecation notice for Grok 4.1 Fast and several other models providing just two weeks’ notice before shutdown, reported here by @xlr8harder from SpeechMap:

This is terrible @xai. I just spent time and money to migrate to grok 4.1 fast, and you’re disabling it with less than two weeks notice, after releasing it in November, with no migration path to a fast/cheap alternative.

I will never depend on one of your products again.

Here’s SpeechMap’s detailed explanation of how they selected Grok 4.1 Fast for their project in March.

Were xAI serving those models out of Colossus 1?

xAI owner Elon Musk (who previously delighted in calling Anthropic “Misanthropic”) tweeted the following:

By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. [...]

After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

And then shortly afterwards:

Just as SpaceX launches hundreds of satellites for competitors with fair terms and pricing, we will provide compute to AI companies that are taking the right steps to ensure it is good for humanity.

We reserve the right to reclaim the compute if their AI engages in actions that harm humanity.

Presumably the criteria for “harm humanity” are decided by Elon himself. Sounds like a new form of supply chain risk for Anthropic to me!

Posted 7th May 2026 at 5:09 pm · Follow me on Mastodon, Bluesky, Twitter or subscribe to my newsletter

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This is Notes on the xAI/Anthropic data center deal by Simon Willison, posted on 7th May 2026.

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