The parameter "reasoning_effort" is something new, or am I wrong?

  Qwen3.8 comes with official support for reasoning_effort, which can be used to adjust reasoning depth and control cost:
    - xhigh (default): for complex tasks demanding thorough analysis
    - medium: balancing accuracy and speed
    - low: efficient reasoning optimizing for speed and cost
  In addition, preserve_thinking is enabled by default for all workloads for the best out-of-the-box experience.

Asking because in my case (OCR of scanned historical "National Geographic" magazines) the LLM trying to merge text split into separate columns was running in circles from time to time and needed a lot of prompt tuning when using Qwen 3.0/3.5/3.6 (still needs from time to time).