Show HN: The Smallest LLM in JavaScript

Created

      September 20, 2026 04:04 

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the smallest LLM


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Learn more about bidirectional Unicode characters | | const text = "mama dad mama cat dad mama dog"; |

|  | const words = text.split(" "); | 
|  | const model = {}; | 
|  | for (let i = 0; i < words.length - 1; i++) { | 
|  | const a = words[i]; | 
|  | const b = words[i + 1]; | 
|  | model[a] ??= []; | 
|  | model[a].push(b); | 

| | } |

|  | function next(word) { | 
|  | const choices = model[word] ?? words; | 
|  | return choices[Math.floor(Math.random() * choices.length)]; | 

| | } |

|  | function generate(start, n = 10) { | 
|  | let word = start; | 
|  | const out = [word]; | 
|  | for (let i = 0; i < n; i++) { | 
|  | word = next(word); | 
|  | out.push(word); | 

| | } | | | return out.join(" "); | | | } |

| | console.log(generate("mama")); | Author