Artificial Intelligence: What It Actually Is and What to Use
Artificial intelligence explained plainly — what it is, which tools are worth your time, and how to pick the right one for your actual needs.
By 2025, over 300 million people were using AI tools weekly — yet most of them couldn't explain what separates a genuinely useful AI product from one that just autocompletes badly. Searches for "artificial intelligence" have jumped +500% in the past 90 days, which tells you a lot: people are hearing about it everywhere and still trying to figure out what it actually does for them. Here's the honest answer.
Short answer: Artificial intelligence is software that makes decisions or generates outputs by learning from data, rather than following hard-coded rules. The tools worth using today are the ones that save you real time on real tasks — writing, coding, image generation, research, and automation.
What Artificial Intelligence Actually Means (Without the Hype)
AI is not one thing. It's a category that includes:
- Large language models (LLMs) like GPT-4o and Claude 3.5 — these read and write text, answer questions, summarize documents, write code
- Image generators like Midjourney v6 and DALL-E 3 — these turn text prompts into visuals
- Agent systems like AutoGPT or Devin — these take a goal and execute multi-step tasks autonomously
- Narrow AI — the spam filter in your email, the recommendation engine on Netflix. You've been using this for years.
The "AI" everyone's suddenly talking about is specifically generative AI — tools that produce new content. That's the category worth understanding right now.
The AI Tools That Are Actually Worth Using
For Writing and Research
ChatGPT (GPT-4o) — $20/month for Plus, or free with rate limits. Handles long documents, can browse the web, and generates solid first drafts. Output quality drops noticeably on nuanced topics if you don't give it enough context upfront.
Claude 3.5 Sonnet — Free tier available; $20/month for Pro. Noticeably better than GPT-4o at following complex, multi-part instructions. Handles 200K token context windows, which means you can feed it an entire book and ask questions about it.
Perplexity AI — Free with a $20/month Pro option. Built specifically for research. Cites sources inline, which ChatGPT still doesn't do by default. If you're fact-checking or doing competitive research, Perplexity saves meaningful time.
For Image Generation
Midjourney v6 — $10/month for basic, ~200 images/month. Still the benchmark for photorealistic and stylized image quality. Requires Discord, which is annoying, but the output quality justifies it.
DALL-E 3 — Included in ChatGPT Plus. More literal prompt interpretation than Midjourney — good when you need exactly what you asked for, not an artistic interpretation of it.
For Coding
GitHub Copilot — $10/month for individuals. Autocompletes code in your editor in real time. Developers using it report finishing tasks roughly 55% faster according to GitHub's own study — take that with a grain of salt, but the productivity lift is real and measurable for most people.
The Counter-Intuitive Part Most People Miss
Here's something most AI coverage won't tell you: the biggest gains from AI tools come from the unglamorous stuff, not the flashy stuff.
Everyone experiments with AI for creative writing or making wild images. But the people actually getting leverage from these tools are using them to:
- Summarize 40-page PDFs in 90 seconds
- Write boilerplate SQL queries they'd otherwise Google for 20 minutes
- Draft replies to emails they've been avoiding
The tasks that feel too small or boring to mention — that's where the hours actually add up.
Comparison Table: Top AI Tools at a Glance
| Tool | Cost | Best For | Key Limit |
|---|---|---|---|
| ChatGPT (GPT-4o) | Free / $20/mo | General writing, Q&A, coding | Quality dips without good prompts |
| Claude 3.5 Sonnet | Free / $20/mo | Long documents, complex instructions | No image generation |
| Perplexity AI | Free / $20/mo | Research with citations | Not great for creative tasks |
| Midjourney v6 | $10–$30/mo | High-quality image generation | Discord-only interface |
| GitHub Copilot | $10/mo | Code autocomplete in-editor | Requires IDE integration |
| DALL-E 3 | Included w/ ChatGPT Plus | Precise prompt-to-image | Weaker aesthetic style vs. Midjourney |
The Bottom Line
- If you need to write, research, or summarize text → start with Claude 3.5 Sonnet or ChatGPT Plus; either will handle 90% of use cases
- If you need images for any professional purpose → pay for Midjourney; DALL-E is a fallback, not a replacement
- If you're a developer → GitHub Copilot pays for itself in the first week; don't wait on this one
Artificial intelligence is not magic and it's not going to replace your entire job next Tuesday. But specific tools, used on specific tasks, will save you hours every week. Pick one. Learn it properly. Then add a second.