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Chat & Research AssistantsLesson 2 of 8

Claude

Claude is Anthropic's assistant, particularly popular with developers and people who work with long documents. We'll start with the basic workflow, then look at its standout tools, and the plan choices currently available.

What is Claude?

Claude is a chat assistant built by Anthropic, a company founded by former OpenAI researchers. Like ChatGPT, you type in plain English and get a conversational reply that keeps track of earlier messages in the same chat.

Anthropic ships Claude in a few sizes, roughly a fast and cheap one for quick tasks and a larger one for harder problems. The chat interface at claude.ai picks a solid default, so you don't need to worry about which one to pick when you're starting out.

Getting started

  1. Go to claude.ai.
  2. Sign up with an email address or a Google account.
  3. Type a message in the box at the bottom and press Enter.
  4. Reply in the same thread to keep the context going.
claude.ai
I have 500 words to cut down to 150. Here's the paragraph: ...
C
Paste it in and I'll trim it down to 150 words while keeping the main points. Want me to keep the tone as-is, or make it more formal?
Claude often asks a clarifying question before diving in on open-ended tasks.

What Claude can do

Claude is strongest when a task needs careful writing, a large amount of context, or a visible working space. Here are the main features to try first.

✍️

Writing & editing

Drafts, edits, and rewrites, usually with a bit more explanation of why a change was made.

Tighten this sentence: 'Due to the fact that we were unable to attend, we regretfully must decline.'
C
Try: "We're unable to attend and have to decline." Cuts the filler without losing the tone.
💻

Coding help

Writing functions, debugging, and working through a codebase step by step.

This function returns undefined instead of the sum. Why?
C
Most likely there's no return statement at the end of the loop, so the function falls through without sending anything back. Paste the code and I can point to the exact line.
📎

File & image analysis

Upload a PDF, spreadsheet, or photo and ask questions about it.

📄 contract.pdfWhat's the notice period in this contract?
C
Clause 8.2 lists a 30-day written notice period for either party.
🧩

Artifacts

Code, documents, and mini web pages open in a separate preview panel next to the chat, so you can see the result while you keep talking.

Build a simple countdown timer component in React.
Here's a countdown timer with start, pause, and reset. Opening it in a preview panel on the right so you can see it run.
Artifact
00:45
PauseReset
🗂️

Projects

Group related chats and reference files together, with instructions that apply to every chat inside.

Projects
📁Thesis Research
📁Client Onboarding Docs
Custom instructions: "Always cite the page number from the uploaded PDF."
🌐

Web search

Claude can search the web for current information and link to where it found it.

Who won the last Formula 1 race?
C
Checking the latest results now. [source: formula1.com]
🎚️

Style controls

Switch between Concise, Explanatory, Formal, and other response styles without rewriting your prompt.

ConciseExplanatoryFormal

Same question, different style: "Explanatory" gives you the reasoning and a bit of teaching alongside the answer, while "Concise" skips straight to the point.

⌨️

Claude Code

A terminal tool for larger coding projects: reading a whole repo, making edits, and running tests. QList has a full course on it in the Master Claude Course.

This becomes more useful once you want to work with Claude inside a real codebase instead of only using the browser chat.

Pricing tiers

Anthropic adjusts pricing and limits periodically, so check the official pricing page before you subscribe. The current options are broadly divided like this:

Free
$0
  • · A daily message limit
  • · Access to file uploads
  • · Good for trying it out
Pro
Paid, monthly
  • · Much higher usage limits
  • · Access to larger models
  • · Extended thinking for harder problems
Team / Enterprise
Paid, per seat
  • · Shared workspace for a team
  • · Admin and security controls
  • · Data excluded from model training

Claude vs. ChatGPT

Both are strong general-purpose assistants, and plenty of people keep both open. A rough way to think about the split: ChatGPT ships more built-in tools by default (image generation, voice mode, a plugin-style GPT store). Claude tends to write longer, more careful answers and its Artifacts panel makes it easy to see code or documents rendered as you go.

If you're just starting out, either one is a fine first stop. Try the same question in both and see which style of answer you prefer.

Where Claude stands out

Claude is the second stop in this AI Tools Course, right after ChatGPT. Up next is Gemini, then Perplexity, DeepSeek, Copilot, Grok, and Meta AI, followed by app builders, image tools, and video/audio tools.

What's Next

Next up: Gemini, Google's assistant built into Search, Docs, and Android.