What is a Token in AI?
In AI, especially in language models like ChatGPT, Gemini a token is like a small piece of text that the AI uses to understand and generate language. Think of it as the building block of sentences. A token is a small piece of text that AI reads and processes. When you type a sentence, AI doesn’t read it all at once, it breaks it down into tokens to understand and generate responses.
Example
Let’s take this sentence:
1I love AI.
This might be broken into these tokens:
I
love
AI
.
👉 So, the sentence has 4 tokens.
Why Tokens Matter
AI models like ChatGPT don’t process full sentences directly. They break text into tokens and handle one token at a time. That’s how they "read" and "write."
What Can Be a Token?
A token can be:
- A whole word (like
hello
) - A part of a word (like
un
,believ
,able
) - Punctuation (like
.
or!
) - Spaces (sometimes)
Summary
A token is a small chunk of text (like a word or part of a word) that AI models use to understand and generate language. It’s how AI reads and communicates—one piece at a time.
Token Pricing Questions
If one million tokens cost $0.15 for input and $0.60 for output, and a 300 word essay uses about 300 tokens for the essay plus 10 tokens for the input prompt (ignoring cached tokens), how many essays can you create for $1?
Answer:
Let's break down the cost for one essay:
-
Input Tokens:
- Cost per million tokens: $0.15
- Tokens used: 10
- Cost = 10 × ($0.15 / 1,000,000) = $0.0000015
-
Output Tokens:
- Cost per million tokens: $0.60
- Tokens used: 300
- Cost = 300 × ($0.60 / 1,000,000) = $0.00018
-
Total Cost per Essay:
- Total = $0.0000015 + $0.00018 = $0.0001815
-
Number of Essays for $1:
- Essays = $1 / $0.0001815 ≈ 5500
So, for $1, you can create approximately 5500 essays.
This is the perfect time to Learn AI. Download Learn AI App to start your AI journey today!