LLM Wrapper
ELI5 — The Vibe Check
A startup that's basically just a pretty UI on top of someone else's AI model. 'We built an AI-powered email assistant!' = they send your email to GPT-4 and show you the response. VCs love funding them, Twitter loves roasting them, and they all pray OpenAI doesn't add their feature next Tuesday.
Real Talk
An LLM wrapper is an application that provides a user interface or workflow around an existing language model API (typically OpenAI or Anthropic) without significant proprietary model work. While often used dismissively, many successful products are technically LLM wrappers that add genuine value through UX, domain context, and workflow integration.
Show Me The Code
// The entirety of some AI startups:
const response = await openai.chat.completions.create({
model: 'gpt-4',
messages: [{ role: 'user', content: userInput }]
})
return response.choices[0].message.content
// Valuation: $50M
When You'll Hear This
"That startup is just an LLM wrapper — I could build it in a weekend." / "Being an LLM wrapper isn't automatically bad if the UX is actually good."
Related Terms
API (Application Programming Interface)
An API is like a menu at a restaurant. The kitchen (server) can do a bunch of things, but you can only order what's on the menu.
LLM (Large Language Model)
An LLM is a humongous AI that read basically the entire internet and learned to predict what words come next, really really well.
SaaS (Software as a Service)
SaaS is software you use through a browser without installing anything — you just pay a subscription and the company handles everything.
Vibecoding
Vibecoding is when you code by vibes — you tell an AI what you want, it writes the code, and you just go with the flow.