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Comment by HarHarVeryFunny

12 hours ago

> I think everyone has known that inference is profitable overall for the major providers

> The major providers are unprofitable after you add in the training and research costs and other overheads

It's meaningless to say that selling something is profitable if you are ignoring the cost to produce it.

The profitabiity (or not) of AI models needs to be calculated on a per model lifetime basis - what did the model cost to develop and train, what is the lifetime revenue the model generates, and what is the lifetime operational cost of the model (including amortized GPU cost), etc.

It makes no more sense to calculate "inference" profitability when ignoring training cost than it would to calculate it when ignoring GPU cost.

Exactly. And you can't just stop training models, because your competitors won't, and customers are switching providers on a daily basis (most likely an exaggeration).

Hence "we need to slow down progress for safety" [narrator: it had nothing to do with safety]. The industry is begging for the regulation so that there is a coordinated slow down and consequently move towards profitability.

  • > coordinated slow down and consequently move towards profitability

    100%

    Amodei has been promising the "end of the exponential" all year, when they can shift some compute away from cash-burning research and training toward cash-generating inference.

    "Pacing the frontier" is how you collude with your competitors to all decelerate at the same time because safety.

    I saw last week that Anthropic is currently cash-flow positive with 75% of compute going to research and training. If they can flip a switch and move from 3:1 to 2:1 or 1:1 training:inference, they will be insanely profitable.

    As long as they can avoid a price war.

    >> calculated on a per model lifetime basis

    True only if you never decelerate R&D.

    But "pacing the frontier" means every early model doesn't need its own profitable P&L.

    Early models can be big money losers while helping build the next generation.

    If the industry can coordinate to all decelerate at the same time, then they'll flip from incinerating billions to minting billions, and all that capex will suddenly look completely sustainable.

    Unless DeepSeek suddenly gives it all away for free, which is why the big three need government regulation to prevent foreign models from busting the cartel.

> It's meaningless to say that selling something is profitable if you are ignoring the cost to produce it.

At the same time, training costs don’t scale with usage, so no matter how expensive they are, they can be paid for as long as inference is profitable. It is only inherently unsustainable if you lose money on inference.

Of course, it could be that the inference usage required to pay for the training is too high to be possible, but that is a separate argument.

  • It doesn't just matter that inference is profitable - cash from profitable inference needs to outweigh cash burned by training. If training costs even $1 more than your profits from inference on a model, you lost money on the whole thing.

> It's meaningless to say that selling something is profitable if you are ignoring the cost to produce it.

Don't enter that rabbit hole, you'd be surprised at how questionable are some accounting rules and practices, even in publicly traded companies.

if i can run an existing open model because its good enough for what most people need, I can just spin up an inference business, and put my spend either on trying to optimize it further or on customer experience

... and not worry about training cost at all.

a lot of the cloud businesses of the last decades have relied heavily on open source code, again skipping most of the cost to make the product/service being sold.