unsloth/studio/backend/core/inference
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
..
__init__.py Final cleanup 2026-03-12 18:28:04 +00:00
audio_codecs.py studio: per-model inference defaults, GGUF slider fix, reasoning toggle (#4325) 2026-03-16 06:37:55 -07:00
defaults.py studio: web search, KV cache dtype, training progress, inference fixes 2026-03-17 00:30:01 -07:00
inference.py fix: system prompt ignored in unsloth inference (#4528) 2026-03-24 04:01:33 -07:00
llama_cpp.py Detect always-on reasoning models and show Think button as locked-on (#4654) 2026-03-27 05:42:26 -07:00
orchestrator.py feat(studio): infinite scroll for recommended models list (#4414) 2026-03-18 03:17:01 -07:00
tools.py Fix studio chat crash on Mac: vendor check_signal_escape_patterns (#4431) 2026-03-18 09:10:13 -07:00
worker.py Fix inference failing for transformers 5.x models (trust_remote_code) (#4652) 2026-03-27 04:51:30 -07:00