yup, after the token-increase from CC from two weeks ago, I'm now consistently filling the 1M context window that never went above 30-40% a few days ago. Did they turn it off? I used to see the Co-Authored by Opus 4.6 (1M Context Window) in git commits, now the advert line is gone. I never turned it on or off, maybe the defaults changed but /model doesn't show two different context sizes for Opus 4.6

I never asked for a 1M context window, then I got it and it was nice, now it's as if it was gone again .. no biggie but if they had advertised it as a free-trial (which it feels like) I wouldn't have opted in.

Anyways, seems I'm just ranting, I still like Claude, yes but nonetheless it still feels like the game you described above.

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dr_kiszonka 4 hours ago | parent | next [-]

The default prompt cache TTL changed from 1 hour to 5 minutes. Maybe this is what you are experiencing.

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robwwilliams 4 hours ago | parent | prev | next [-]

Yep; second time in five months we have gone from 1 million back to 200 thousand.

	▲	_blk 4 hours ago \| parent [-]
		hmm, I just reverted to 2.1.98 and now with /model default has the (1M context) and opus is without (200k) .. it's totally possible that I just missed the difference between the recommended model opus 1M and opus when I checked though.

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troupo 4 hours ago | parent | prev | next [-]

They are now literally blaming users for using their product as advertised:

https://x.com/lydiahallie/status/2039800718371307603

--- start quote ---

Digging into reports, most of the fastest burn came down to a few token-heavy patterns. Some tips:

• Sonnet 4.6 is the better default on Pro. Opus burns roughly twice as fast. Switch at session start.

• Lower the effort level or turn off extended thinking when you don't need deep reasoning. Switch at session start.

• Start fresh instead of resuming large sessions that have been idle ~1h

• Cap your context window, long sessions cost more CLAUDE_CODE_AUTO_COMPACT_WINDOW=200000

--- end quote ---

https://x.com/bcherny/status/2043163965648515234

--- start quote ---

We defaulted to medium [reasoning] as a result of user feedback about Claude using too many tokens. When we made the change, we (1) included it in the changelog and (2) showed a dialog when you opened Claude Code so you could choose to opt out. Literally nothing sneaky about it — this was us addressing user feedback in an obvious and explicit way.

--- end quote ---

	▲	torginus 2 hours ago \| parent [-]
		Off topic, but I found Sonnet useless. It can't do the simplest tasks, like refactoring a method signature consistently across a project or following instructions accurately about what patterns/libraries should be used to solve a problem.

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varispeed 2 hours ago | parent | prev [-]

I find this 1M context bollocks. It's basically crap past 100k.