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Anthropic officially bans using subscription auth for third party use

code.claude.com

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Re: Anthropic officially bans using subscription auth for third party use

#571

Earlier quoted context omitted.

Using an API key is orders of magnitude more expensive. That's the difference here. The Claude Code subscriptions are being heavily subsidized by Anthropic, which is why people want to use their subscriptions in everything else.

They are subsidized by people who underuse their subscriptions. There must be a lot of them.

There is a lot more vc cash.

Re: Anthropic officially bans using subscription auth for third party use

#572

I'm only waiting for OpenAI to provide an equivalet ~100 USD subscription to entirely ditch Claude. Opus has gone down the hill continously in the last week (and before you start flooding with replies, I've been testing opus/codex in parallel for the last week, I've plenty of examples of Claude going off track, then apologising, then saying "now it's all fixed!" and then only fixing part of it, when codex nailed at t…

No developer writes the same prompt twice. How can you be sure something has changed?

When I use Claude daily (both professionally and personally with a Max subscription), there are things that it does differently between 4.5 and 4.6. It's hard to point to any single conversation, but in aggregate I'm finding that certain tasks don't go as smoothly as they used to. In my view, Opus 4.6 is a lot better at long standing conversations (which has value), but does worse with critical details within smaller conversations.

A few things I've noticed:

* 4.6 doesn't look at certain files that it use to

* 4.6 tends to jump into writing code before it's fully understood the problem (annoying but promptable)

* 4.6 is less likely to do research, write to artifacts, or make external tool calls unless you specifically ask it to

* 4.6 is much more likely to ask annoying (blocking) questions that it can reasonably figure out on it's own

* 4.6 is much more likely to miss a critical detail in a planning document after being explicitly told to plan for that detail

* 4.6 needs to more proactively write its memories to file within a conversation to avoid going off track

* 4.6 is a lot worse about demonstrating critical details. I'm so tired of it explaining something conceptually without it thinking about how it implements details.

Re: Anthropic officially bans using subscription auth for third party use

#575

It might be some confirmation bias here on my part but it feels as if companies are becoming more and more hostile to their API users. Recently Spotify basically nuked their API with zero urgency to fix it, redit has a whole convoluted npm package your obliged to use to create a bot, Facebook requires you to provide registered company and tax details even for development with some permissions. Am I just old man screa…

See [1] for a solution.

[1] https://i.programmerhumor.io/2025/03/778c56a79115a582edb9949...

Re: Anthropic officially bans using subscription auth for third party use

#576

Reading these comments aren't we missing the obvious? Claude Code is a lock in, where Anthropic takes all the value. If the frontend and API are decoupled, they are one benchmark away from losing half their users. Some other motivations: they want to capture the value. Even if it's unprofitable they can expect it to become vastly profitable as inference cost drops, efficiency improves, competitors die out etc. Or wor…

Anthropic is going to be on the losing side with this. Models are too fungible, it's really about vibes, and Claude Code is far too fat and opinionated. Ironically, they're holding back innovation, and it's burning the loyalty the model team is earning.

Re: Anthropic officially bans using subscription auth for third party use

#578

Earlier quoted context omitted.

> If they can provide a relatively cheap subscription against the direct API use Except they can't. Their costs are not magically lower when you use claude code vs when you use a third-party client. > For me, this is fair. This is, plain and simple, a tie-in sale of claude code. I am particularly amused by people accepting it as "fair" because in Brazil this is an illegal practice.

> This is, plain and simple, a tie-in sale of claude code. I am particularly amused by people accepting it as "fair" because in Brazil this is an illegal practice I am very curious what is particularly illegal about this. On the sales page nowhere do they actually talk about the API https://claude.com/pricing Now we all know obviously the API is being used because that is how things work, but you are not actually pay…

Imagine if video service came with a free TV that watched you, and was really opinionated about what you watch, and you could only watch your videos on the creeper TV.

Re: Anthropic officially bans using subscription auth for third party use

#579

Earlier quoted context omitted.

> This is, plain and simple, a tie-in sale of claude code. I am particularly amused by people accepting it as "fair" because in Brazil this is an illegal practice I am very curious what is particularly illegal about this. On the sales page nowhere do they actually talk about the API https://claude.com/pricing Now we all know obviously the API is being used because that is how things work, but you are not actually pay…

Imagine if video service came with a free TV that watched you, and was really opinionated about what you watch, and you could only watch your videos on the creeper TV.

Then I would not use it because it does not work the way I want it to work...

But if that is the service they are making and they are clear about what it is when you sign up... That does not make it illegal.

I can see why people think they should be entitled to do this, but it does not align with how they are selling the service or how many other companies sell services. In most situations you don't get unlimited access to the individual components of how a service works (the API), you are expected to use the service (in this case Claude Code) directly.

Re: Anthropic officially bans using subscription auth for third party use

#580

Earlier quoted context omitted.

Do you not understand that they run the regular subscription at a huge loss? In exchange they require you to stick with Claude Code. You are free to use the API.

Why can't they run the API at a huge loss too then??

I’m not saying this is a bubble; I don’t know whether than it is or not. But if it is a bubble, I’ve only seen one bubble this big in tech. When that bubble popped, the only companies that survived kept their costs in check. Some raised a round right before the bubble popped but cost control was always part or their survival.
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