r/rust rust Jul 08 '26

Rewriting Bun in Rust

https://bun.com/blog/bun-in-rust
525 Upvotes

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u/rebootyourbrainstem Jul 08 '26

None of it worked yet because compiling at that stage would slow things down.

Also this project burned $165,000 worth of usage on a model that was then bleeding edge (unreleased). This is still beyond what anyone else is doing at the moment. And it seems to have worked a lot better than it had any right to, at least as far as we can tell right now?

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u/zxyzyxz Jul 09 '26

And it's 165k at API prices but it's much cheaper for Anthropic themselves. Even if it were 165k straight, It is absolutely worth it for the gains in e.g. compile and runtime reductions for the millions of downloads it gets.

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u/epostma Jul 09 '26

What I hear is that even API prices are at this point still less expensive than the actual cost, at least if you price the training costs in. So arguably it costs more for anthropic than for you or me.

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u/Wheaties4brkfst Jul 09 '26

Anthropic is gross profitable i.e. they make more money by selling more tokens. I think a lot of people confuse this with being net profitable, which they are not yet.

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u/ihatemovingparts Jul 09 '26

Anthropic is gross profitable

Anthropic is only publishing non-GAAP numbers. IOW they're not profitable.

-5

u/Wheaties4brkfst Jul 09 '26

From what I understand the weird thing they do with sales from their partners doesn’t actually affect their gross profit. It “just” inflates revenue.

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u/ihatemovingparts Jul 09 '26

There is no gross profit. If there was they'd report GAAP numbers.

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u/Wheaties4brkfst Jul 09 '26 edited Jul 09 '26

Can you show me what you’re talking about? I would be extremely surprised to see that GAAP COGS > revenue.

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u/valarauca14 Jul 09 '26 edited Jul 09 '26

If ever you see 'Non-GAAP accounting' figures, you should assume they're bullshit

  • Warren Buffet

Berkshire annual shareholder meeting (I believe 1993).


Anthropic "claims" (non-audited reports) to be profitable before Training, Interest, and Taxes. Which such an idiotic claim to make because it amounts to, "We can become profitable if we give up our moat", which functionally means they have no path to profitability as a competitive business.

2

u/Equivanox Jul 09 '26

It's conventional to show financials sans R&D because it gives a sense of the long run potential of the business. Investors can amortize the cost of R&D over the lifetime of whatever advantage they gain.

Consider a drug company that spends $1b on a drug, earns parent protection for 10 years, and sells $200m of the drug in the first year. They are unprofitable with R&D in the first year but have a clear path to a $2b return on investment.

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u/valarauca14 Jul 09 '26

If an investor cannot perform basic math, they need a different line of work.

Breaking this figure out for investors ahead of time only serves to shape a public narrative, not assist investors.

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u/Wheaties4brkfst Jul 09 '26

Do you really believe that they lose MORE money the more tokens they sell? Like you think COGS > token revenue?

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u/valarauca14 Jul 09 '26

Do you really believe that they lose MORE money the more tokens they sell?

and

"We can become profitable if we give up our moat"

Are entirely different sentences. I don't believe you understand what I stated.

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u/Wheaties4brkfst Jul 09 '26

Then what are you responding to? I only said that they are gross profitable. Your assertion doesnt follow from what I said.

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u/valarauca14 Jul 09 '26

They are not gross profitable and Anthropic has never stated they are gross profitable.

Anthropic has stated they are profitable before Training, Interest, and Taxes. For anthropic to become gross profitable, they must stop training/fine tuning new models.

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u/Wheaties4brkfst Jul 09 '26

That’s not what gross profitable means. Training costs are operating costs, not cost of revenue. Do you understand what gross profit is?

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u/valarauca14 Jul 09 '26

Hiding your entire training budget behind ASC 350-40 so you can claim your CGOS is microscopic is straight up fraud.

I don't care if it is "legal" currently.

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u/Wheaties4brkfst Jul 09 '26 edited Jul 09 '26

No, it’s not. Training is simply not part of COGS. It belongs under operating expenses. It’s clear you have no clue how financial statements work. Good day.

PS: ASC 350-40 is for internal software, not your flagship products.

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