Lesson 70 of 1234
ChatGPT, November 2022
A research preview posted on a Wednesday became the fastest-growing consumer product in history.
Lesson map
What this lesson covers
Learning path
The main moves in order
- 1The Wednesday That Changed Things
- 2ChatGPT
- 3RLHF
- 4product moment
Concept cluster
Terms to connect while reading
Section 1
The Wednesday That Changed Things
On November 30, 2022, OpenAI posted a research preview of ChatGPT, a chat interface built on a model derived from GPT-3.5. It was free. It was shockingly fluent. It reached an estimated 100 million monthly users by January, a pace that dwarfed any prior consumer product.
The underlying model was not new. What was new was the chat interface, the instruction tuning, and the use of reinforcement learning from human feedback, or RLHF, to make the model follow instructions and refuse harmful requests.
What changed overnight
- Schools and universities scrambled to respond to AI-written essays
- Google declared a code red and accelerated Bard, later Gemini
- Microsoft invested another ten billion dollars in OpenAI within weeks
- Every software company added an AI feature to its roadmap
The public conversation about AI shifted from specialist forums to the dinner table. Parents asked about homework. Managers asked about jobs. Policy makers asked about regulation. All within a few months.
“I'm a little bit scared of this.”
Key terms in this lesson
The big idea: ChatGPT was less a technical breakthrough than a product one. But the product reshaped the industry, the funding landscape, and public understanding of AI almost overnight.
End-of-lesson quiz
Check what stuck
15 questions · Score saves to your progress.
Tutor
Curious about “ChatGPT, November 2022”?
Ask anything about this lesson. I’ll answer using just what you’re reading — short, friendly, grounded.
Progress saved locally in this browser. Sign in to sync across devices.
Related lessons
Keep going
Builders · 30 min
Where Training Data Actually Comes From
You cannot understand modern AI without understanding its diet. Let's map where the data comes from, how it gets cleaned, and what that means.
Explorers · 12 min
Why AI Tests Are Tricky
People give AIs tests called benchmarks. But passing a test is not the same as being truly smart. Let's find out why.
Explorers · 20 min
History Detective: Primary Sources and AI
History class is full of old letters, diaries, and speeches. AI can help you read them, but you still have to think like a detective.