ChatGPT's Thinking mode selector has been updated.
The Thinking mode from the previous lecture content has been updated in the UI as follows.
The name Thinking still exists within the product and in official descriptions, but the user UI has been updated to Intelligence.
Please refer to the following content as you take the course.
Instant → Instant (Same as before)
Thinking → Intelligence
Thinking - Light → Feature removed
Thinking - Standard → Medium
Thinking - Extended → High
Thinking - Heavy → Extra High
Source: openai release notes