Around a few months back, it was very popular to argue that inference was subsidised and that Anthropic is losing a lot of money. Loads of commenters in HN were convinced that this was the case. I've personally lost count of the arguments I've gotten into on this topic.

This filing clearly shows that the training+inference margins are at around 43%.

I also had a bet with some one on this topic and this news pretty much settles it https://news.ycombinator.com/item?id=48473051

I wonder if people will now stop claiming that inference is subsidised? There has to be epistemic hygiene

Proof:

- Revenue (Jan–Sep 2026): $33.242 billion.

- Total compute and infrastructure costs (training + inference): $18.808 billion.

- Revenue after all compute costs: $14.434 billion.

- Margin: ($33.242B − $18.808B) / $33.242B = 43.4%.

- Source: Anthropic's SEC S-1 filing, November 10, 2026, “Operating Expenses — Compute and Infrastructure.”

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ac29 3 hours ago | parent | next [-]

Youre talking about gross margin (revenue - cost of goods sold). Operating margin, which includes other operational expenses, is still negative. Net margin, which includes all expenses, is deeply negative.

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simianwords 3 hours ago | parent [-]

When people say Inference is subsidised, they obviously don't talk about the company itself being profitable. To be fair, I included training costs also.

	▲	tefkah an hour ago \| parent [-]
		I don't think that's obvious at all. The price charged for inference is subsidized in the sense that they don't charge a rate that actually makes sense if they want to be a profitable company whose main product is selling inference. If they did want to be profitable, obviously they'd charge much more for inference. Hence, people are saying it's subsidized.

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spacechild1 2 hours ago | parent | prev [-]

> This filing clearly shows that the training+inference margins are at around 43%.

Subscriptions or API pricing? There is no doubt that the subscriptions are heavily subsidized. They just milk it with their API pricing.

And of course we have to assume that they didn't use any dubious accounting tricks to make them look more profitable.

	▲	tumdum_ 2 hours ago \| parent [-]
		How do you know that?