The map: AI tool categories

You can't choose tools well without a map of what exists. AI tools cluster into recognizable categories by the job they do. You don't need to know every tool — thousands exist — but you should know the categories, so when you have a need you can go straight to the right shelf. Here's the practical map.

Working with words: writing and content assistants (drafting, editing, long-form), summarization tools, translation, and the general-purpose chat assistants (ChatGPT, Claude, Gemini) that do a bit of everything.

Working with images and video: image generation, image editing/upscaling, video generation, video editing and clipping, avatars.

Working with audio: voice generation (text-to-speech), voice cloning, transcription, meeting notetakers.

Working with code: coding assistants and AI-native editors (a whole course of their own in this series).

Working with knowledge and data: research assistants, search tools, data analysis, document Q&A (tools that answer from your documents — that's RAG, another course here).

Getting things done (business/ops): marketing and ad copy, SEO tools, sales and outreach, customer support, automation platforms that connect apps, and agents that take multi-step actions.

Building blocks: the model APIs and platforms developers build on, and connectors/MCP tools that let AI reach your other systems.

Two things to notice. First, the general-purpose assistants overlap many categories — ChatGPT or Claude can write, summarize, analyze, and code passably. Often your stack starts with one strong general assistant, and you add specialized tools only where a dedicated tool clearly beats the generalist (a purpose-built video editor, a real transcription service). Second, categories are how a good directory is organized — including Toolglade's — so browsing by category is the fastest way to find the right kind of tool, then compare within it.

The goal of this lesson isn't to memorize tools; it's to build the map so you can locate a solution when a need arises. When you think "I keep manually summarizing long reports," you should immediately know that's a category with strong options — and know to go compare a few rather than grab the first one you saw on social media. Keep this map in your head; the next lesson teaches you to evaluate the specific tools within any category.