[BUG] extended thinking doen't work (think, think hard, think harder)

This is absolutely cooked. What are they doingggg

I've got the same issue starting this morning after the new update

Same, in my understanding using tab to trigger thinking mode should act like this:
Thinking on: Uses thinking for all requests.
Thinking off: Thinking is off by default but when using a keyword like "think", "think hard", etc. Thinking should be enabled for the current request and put back to off after the answer.
Right now what I'm seeing is:
Thinking on: Always thinks, as expected
Thinking off: Never thinks even when using a keyword, does not work as expected

This change is horrible, they should reverter it

Interesting.

<img width="1499" height="529" alt="Image" src="https://github.com/user-attachments/assets/880f65d9-0b8f-4b8e-9887-efb6df6fb36e" />

Before of the update as soon as I wrote think..think harder, etc, the thinking mode were active, but I notice that now with Tab, idk if that is really new, or it was since the version 2

<img width="2836" height="214" alt="Image" src="https://github.com/user-attachments/assets/7fc7fd3f-c413-40db-9837-eecbb644c247" />

<img width="1193" height="87" alt="Image" src="https://github.com/user-attachments/assets/98e99ca0-6aca-45fb-a19f-b588f1712e55" />

it supports only Thinking(ultrathink) and not thinking

u can toggle by tab or write ultrathink in prompt

<img width="1726" height="188" alt="Image" src="https://github.com/user-attachments/assets/289cf8dc-6f8e-4862-aff0-0b90c625e224" />

+1 Super annoying and terrible communication from Anthropic

If you turn thinking on with ‘Tab’, is that the same as typing ‘ultrathink’? Or is thinking mode a basic level of thinking and ‘ultrathink’ for more?

Totally unclear.

I use Claude Code with Visual Studio Code through native extension. In native, there is still no thinking mode shown.

If you turn thinking on with ‘Tab’, is that the same as typing ‘ultrathink’? Or is thinking mode a basic level of thinking and ‘ultrathink’ for more? Totally unclear.

There is only two mods right now. Thinking ON and thinking off, by default thinking is off, when u type ultrathink a thinking mode will be turned ON.

Either toggle it by using tab or writing ultrathink in prompt.

in claude code version 1 ultrathink was able to use too, many people just didnt use it because it uses maximum token, and tbh think harder was enought, but in claude code v2, they removed think, think hard and think harder mode, leaving only ultrathink and default no think

Horrible change. Only two levels of thinking (ultrathink and off) and no visual feedback which mode you are currently using. Token usage will skyrocket with all users now using ultrathink without knowing.

This horrible change for sure, not just because there are only 2 thinking modes and I have no click here in there at the beginning of each session but because we lost the ability to inject the keywords inside of our specs implicitly controlling the thinking budget.

Horrible change

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