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What is generative AI (Gen AI) and what is it for?

Until recently, AI in companies was invisible and kind of boring: it classified things (“is this email spam?”) and predicted things (“which customer is about to leave?”). Generative AI changed the game because it does something different: it creates.

Jonathan Canales
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What is generative AI (Gen AI) and what is it for?
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Until recently, AI in companies was invisible and kind of boring: it classified things (“is this email spam?”) and predicted things (“which customer is about to leave?”). Generative AI changed the game because it does something different: it creates.

Generative AI (Gen AI, as the headlines call it) is the family of models that produces new content from an instruction you give it: text, images, audio, video and code. You type what you want (the famous prompt) and the model makes it in seconds.

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The key difference: traditional AI judges or predicts what already exists; generative AI produces something that didn't exist.

What can it generate?

Whiteboard-style doodle: a brain labeled Gen AI receives a prompt and generates text, images, audio and code
  • Text: emails, articles, summaries, product descriptions. This is where LLMs like ChatGPT, Claude or Gemini live.
  • Images: illustrations, realistic photos, logo sketches, and even the whiteboard doodles illustrating this article.
  • Audio and voice: natural voices to narrate content, music and dubbing.
  • Code: from an Excel formula to complete programs.
  • Video: clips generated from text or images; the newest frontier and the one improving fastest.

If you want a deeper dive into the text piece, I explained it in What is an LLM and what is it for?.

How does it work? (the honest version)

Without entering the lab: these models learned the patterns of millions of examples (texts, images, sounds) and learned to produce new examples that stay coherent with those patterns. They don't copy-paste: they synthesize. That's why they sometimes produce gems… and sometimes hands with six fingers.

What is it good for in your business?

  • Marketing without bottlenecks: post drafts, campaign emails and descriptions in minutes.
  • Images for everything: presentations, social media and documents without relying on generic stock photos.
  • Content in two languages: generate and adapt Spanish and English versions with the same message.
  • Fast prototypes: picture a product, a screen or a package before investing in producing it.
  • Customer support: instantly drafted replies that your team reviews and sends.
  • Audio for your content: the narration you can listen to on this blog, for example.
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Rule of thumb: generative AI is excellent at first versions: drafts, sketches, options. The final version, the one with your name on it, gets reviewed and signed by a person.

Where to be careful

  • Variable quality: the output depends on the instruction; a weak prompt gives a weak result.
  • Copyright: the legal ground for generated content is still being defined; check the terms of the tool you use.
  • Sensitive data: whatever you paste into the tool can leave your control; don't upload confidential information.
  • Brand: if all your content sounds generic, so does your business. AI drafts; your judgment gives it the tone.

Generative AI didn't come to replace your team; it came to take away the blank page. Whoever starts with a good draft finishes sooner. And in business, finishing sooner (done right) is pure advantage.

Read the Spanish version of this article

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