What is Generative AI?
Generative AI is AI that creates new content: text, images, audio, video, and code. It does not just analyze or classify existing content. It generates new, original output.
Generative AI in Plain English
Most AI you learned about before is discriminative AI: it classifies or predicts. A spam filter reads an email and says 'spam'. A face recognizer looks at a photo and says 'Alice'.
Generative AI is different. It creates new content.
Give it a text prompt and it writes an essay. Give it a description and it draws an image. Give it the start of a sentence and it completes it. Give it sample audio and it clones a voice.
The content it generates was never seen before. It creates it fresh by combining patterns it learned from vast amounts of training data.
Deep Learning ⊂ Machine Learning ⊂ Artificial Intelligence
Generative AI Examples
- ChatGPT: generates human-quality answers, essays, code, and conversation
- Claude: similar to ChatGPT, made by Anthropic
- Gemini: Google's conversational AI system
- DALL-E: generates images from text descriptions ('a cat wearing sunglasses on the beach')
- Midjourney: creates artistic images from text prompts
- Stable Diffusion: open-source image generation model
- Suno and Udio: generate full songs from a text description of style and lyrics
- Sora: OpenAI's video generation model
- GitHub Copilot: generates code suggestions as you type
How Generative AI Became Possible
Three things made modern Generative AI possible:
- 1Transformers (2017): the architecture that enables models to process and generate long sequences of text, images, and audio at high quality
- 2Scale: training on billions of texts, images, and audio files gave models a rich understanding of how the world is described
- 3RLHF (Reinforcement Learning from Human Feedback): a technique that fine-tunes models to give helpful, harmless, and accurate responses instead of just statistically likely ones
Tip
Tip
Generative AI does not understand content the way humans do. It generates statistically likely sequences based on patterns it learned. This is why it can produce confident-sounding but factually wrong answers. Always verify important information from a Generative AI with a reliable source.
Key Takeaways
- Generative AI is AI that creates new content: text, images, audio, video, and code.
- ChatGPT: generates human-quality answers, essays, code, and conversation
- Claude: similar to ChatGPT, made by Anthropic
- Gemini: Google's conversational AI system