unsloth/studio
Daniel Han e36f72c685
Detect always-on reasoning models and show Think button as locked-on (#4654)
* Detect always-on reasoning models and show Think button as locked-on

Models with hardcoded <think>/<think> tags or reasoning_content in
their chat template (e.g. distilled reasoning models) always produce
thinking output regardless of any toggle. Previously these models
were not detected as reasoning-capable at all, so the Think button
was grayed out even though the model was actively reasoning.

Backend:
- Detect <think>/<think> and reasoning_content in GGUF chat templates
  as a fallback when enable_thinking is not present
- Add reasoning_always_on flag to LoadResponse and InferenceStatusResponse
- Pass the flag through all GGUF load and status response paths

Frontend:
- Add reasoningAlwaysOn to the chat runtime store and API types
- When reasoning_always_on is true, show the Think button as lit
  (active) but not clickable, with a tooltip explaining the model
  always uses thinking
- Force reasoningEnabled=true when the model always reasons

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Use pointer-events-none instead of disabled for always-on Think button

The HTML disabled attribute was not fully blocking clicks on the Think
button for always-on reasoning models. Switch to pointer-events-none
CSS class which prevents all mouse interaction at the CSS level.

* Use a static span instead of disabled button for always-on Think

Replace the button element with a plain span when reasoning is
always on. This makes it physically impossible to toggle since
there is no clickable element at all, avoiding any CSS or
disabled-attribute edge cases.

* Simplify always-on Think button to stay lit and remain toggleable

Keep the Think button as a normal toggleable button but ensure it
shows as lit when reasoning_always_on is true. The model always
reasons regardless of the toggle state so there is no need to
block interaction.

---------

Co-authored-by: Daniel Han <danielhanchen@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
2026-03-27 05:42:26 -07:00
..
backend Detect always-on reasoning models and show Think button as locked-on (#4654) 2026-03-27 05:42:26 -07:00
frontend Detect always-on reasoning models and show Think button as locked-on (#4654) 2026-03-27 05:42:26 -07:00
__init__.py Final cleanup 2026-03-12 18:28:04 +00:00
install_llama_prebuilt.py fix(studio): source-build fallback prefers Unsloth's tested tag over upstream latest (#4593) 2026-03-25 07:25:47 -07:00
install_python_stack.py fix: no-torch install deps without pulling torch transitively (#4650) 2026-03-27 05:19:26 -07:00
LICENSE.AGPL-3.0 Add AGPL-3.0 license to studio folder 2026-03-09 19:36:25 +00:00
setup.bat Final cleanup 2026-03-12 18:28:04 +00:00
setup.ps1 studio: setup log styling (#4494) 2026-03-27 03:12:48 -07:00
setup.sh studio: setup log styling (#4494) 2026-03-27 03:12:48 -07:00
Unsloth_Studio_Colab.ipynb Allow install_python_stack to run on Colab (#4633) 2026-03-27 00:29:27 +04:00