Anthropic's behavior regarding restricting the subscription to their own products is rational, and matches Google's behavior on this front too.

I spent a few weeks in the OpenClaw Discord and there was a competitive sport there where people were posting screenshots of how many hundreds of billions of tokens they were burning per day. It was like what I saw a while back with people on r/DataHoarder abusing the unlimited free storage plans and putting petabytes of torrents onto them. (Well, not technically abusing ;)

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EDIT: Oh my goodness and I forgot the black market for Anthropic tokens (70-90% discounted, which seems to strongly imply they come from the subscriptions)

https://www.youtube.com/watch?v=5paRa6E5rCM

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That being said it does also of course make normal users sad.

(My harness uses less tokens than Claude Code! But I'm not allowed to use it, because we can't have nice things.)

Don't quote me on this but I recall (in March?) OpenAI saying it's totally cool to use your sub with 3rd party stuff, on like the same day when Anthropic was being grilled hard for their changes. (Never interrupt your opponent when he is making a mistake!) I don't know if they can keep that up though, now that the VC money apparently ran out and everyone needs to actually become profitable overnight.