Level 0Lesson 2โฑ๏ธ 50 min

The AI Landscape

Meet the major AI tools and choose the right one for you

๐Ÿ‘ฉโ€๐Ÿซ Teacher๐Ÿ‘จโ€โš•๏ธ Healthcare๐ŸŽ“ Studentโš™๏ธ Engineer๐Ÿ’ป Developer๐Ÿ’ผ Business

Section 1: Meet the Players

There are dozens of AI tools, but a handful of heavy-hitters dominate. Here are the ones you'll actually use.

Claude

Anthropic

FreePaid

Exceptional reasoning, writing, and analysis. Known for honesty and safety. Best for long documents, nuanced tasks, and professional writing. No image generation, but excellent text reasoning.

Access: claude.ai, API, Claude Desktop app

ChatGPT / GPT-4o

OpenAI

FreePaid

The original breakthrough. Excellent all-rounder with strong coding, image generation, browsing, and analysis. Huge plugin ecosystem. Often the most popular choice.

Access: chatgpt.com, API, desktop app

Google Gemini

Google

FreePaid

Google's powerful AI with the most generous free tier. Deep integration with Google Workspace (Docs, Gmail, Sheets, Drive). Great for anyone already in the Google ecosystem.

Access: gemini.google.com, integrated in Google apps

DeepSeek

DeepSeek AI

Free

Chinese open-source model with strong coding and math abilities. Very capable and mostly free. Good ChatGPT alternative if you want to save money or prefer open-source models.

Access: chat.deepseek.com, open-source

Meta Llama

Meta

Free

Open-source model you can run locally on your computer. Privacy-first (no servers, no tracking). Available free through platforms like Llama.ai, Perplexity, and others. Best for privacy.

Access: llama.ai, Perplexity.ai, local installation

Mistral

Mistral AI

FreePaid

European AI with strong multilingual capability. Available free via Le Chat. Good for privacy-conscious European users. Lighter weight, faster responses.

Access: le-chat.mistral.ai, API

Section 2: Feature Comparison

Here's how they stack up across features that matter to you.

FeatureClaudeChatGPTGeminiDeepSeekLlamaMistral
Free TierYes โœ“Yes โœ“Yes โœ“Yes โœ“Yes โœ“Yes โœ“
ReasoningExcellentExcellentVery GoodVery GoodGoodGood
Writing QualityExcellentExcellentVery GoodVery GoodGoodVery Good
CodingExcellentExcellentVery GoodExcellentGoodVery Good
Image InputYes โœ“Yes โœ“Yes โœ“NoLimitedNo
Image GenerationNoYes โœ“Yes โœ“NoNoNo
Web SearchLimitedYes โœ“Yes โœ“NoYes (on some)No
API AccessYes โœ“Yes โœ“Yes โœ“Yes โœ“Yes โœ“Yes โœ“
Privacy FocusVery GoodGoodGoodGoodExcellent (local)Very Good
Context Window200K tokens128K tokens1M tokens128K tokensVaries32K tokens

Note: Features and pricing change frequently. Check official sites for current details. Context window = how much text you can give it at once.

Section 3: Free vs Paid: What You Actually Get

๐Ÿ’ก
The Truth About Free AI
All major AI tools have capable free tiers. You do NOT need to pay to get real value. Start free, upgrade only if you hit limits. Most people never do.

Claude (Anthropic)

  • Free: Limited messages per day, 200K context window, access to latest model. Good for students, hobbyists, and experimentation.
  • Claude Pro ($20/month): Unlimited messages, earlier access to new features, faster responses. Worth it if you use AI multiple hours a day.

ChatGPT (OpenAI)

  • Free: Access to GPT-4o mini (weaker), limited usage, basic features. Fine for casual use.
  • ChatGPT Plus ($20/month): Unlimited GPT-4o, image generation, web browsing, plugins. Best all-rounder for power users.

Gemini (Google)

  • Free: Very generousโ€”daily limits are high. Works in Gmail, Docs, Sheets, Drive. Great value if you use Google Workspace.
  • Gemini Advanced ($20/month): Higher usage limits, access to Gemini 2.0, better performance. Not necessary for most people.

DeepSeek

  • Free: Everything free. Surprisingly good. Limited daily messages, but enough for most uses. Extremely good value.
  • Paid: Optional paid tier available but rarely needed.

Llama & Mistral

  • Free: Completely free, no limits (on public platforms like Llama.ai). Or run locally for absolute zero cost.
  • Paid: Some platforms charge for API usage or faster responses, but free options always exist.

Section 4: Which AI Should I Use?

โ„น๏ธ
Quick Decision Guide
  • For writing & editing: Claude (best prose quality)
  • For research with web access: ChatGPT or Gemini
  • For coding: Claude or ChatGPT (slightly edge to Claude)
  • For free heavy usage: Gemini or DeepSeek
  • For privacy-first: Claude or local Llama
  • If you use Google Workspace: Gemini (built-in integration)
  • For trying before committing: All of them (start with free)

Start Here: The Three-Tool Setup

If you're just starting, I recommend having three tools at your disposal:

  1. Claude for writing, reasoning, and long documents. The best thinker.
  2. ChatGPT for web search, image generation, and when you need a second opinion. The all-rounder.
  3. Gemini if you use Google Workspace, or DeepSeek if you want free everything. The supplementary tool.

All three have generous free tiers. Spend a week with each. You'll develop a preference. Many professionals use 2-3 tools regularly.

Section 5: Hands-On โ€” The Side-by-Side Test

๐Ÿ–ฅ๏ธHANDS-ON EXERCISE

Compare Two AI Tools Side-by-Side

The best way to understand differences is to see them with your own eyes. You're going to give the same prompt to two different tools and compare the responses.

  1. Open two browser tabs: one with Claude (claude.ai) and one with ChatGPT (chatgpt.com). Use free versions.
  2. Copy the prompt below into both tabs (or rephrase it naturally).
  3. Read both responses and compare: Which is clearer? Which is more concise? Which matches your style better?
  4. Pay attention to tone, structure, and depth. You'll start to see their personalities.
  5. Try the same prompt with Gemini or DeepSeek as a third opinion.
  6. After 3-4 comparisons, you'll have a feel for which tool you prefer.
COMPARISON PROMPT
I need to write a professional email declining a meeting invitation while keeping the relationship warm. The meeting was about a project I'm genuinely too busy for. The requester is a colleague I respect and want to stay on good terms with. Give me a draft email (keep it concise, 3-4 sentences).

What to notice:

  • Does the response sound natural or corporate-robotic?
  • How much explanation is included? Too much? Too little?
  • Does the tone match what you'd actually write?
  • Would you send it as-is or does it need tweaking?

Section 6: Best Tools by Profession

Best choice: Claude or ChatGPT

Teachers need writing quality and reasoning. Claude excels at creating lesson plans and explaining concepts at different levels. ChatGPT's plugins for creating quizzes and worksheets are useful.

Key use case: Lesson planning, differentiated instruction, parent communication

PROMPT
I teach 8th grade English. Create a discussion guide for "To Kill a Mockingbird" that helps students understand the main themes without spoiling the ending. Include 5 good discussion questions.

Best choice: Claude or ChatGPT

Healthcare workers need clear explanations and reliability. Claude is particularly good at explaining medical concepts in patient-friendly language. Both tools can help with documentation and patient education.

Key use case: Patient communication, documentation, understanding research

PROMPT
Write a brief explanation of what congestive heart failure means for a patient with a high school education. Include 3 lifestyle changes that help manage it. Avoid medical jargon.

Best choice: Any free tool

Students should start with free options. Claude is best for deep understanding, ChatGPT for quick answers, Gemini if using Google Workspace. All are excellent for studying.

Key use case: Understanding concepts, essay feedback, test prep, research summaries

PROMPT
I'm studying calculus and don't understand why the derivative represents the rate of change. Explain it using everyday examples, like driving a car. Make it intuitive, not mathematical.

Best choice: Claude or ChatGPT

Engineers use AI for documentation, explaining to non-technical stakeholders, and problem-solving. Claude excels at clear technical writing. ChatGPT good for code-heavy tasks.

Key use case: Technical reports, explaining to non-engineers, troubleshooting guides, documentation

PROMPT
I need to explain why we need to upgrade the ventilation system to our facilities manager (non-engineer). Write a 2-paragraph explanation covering: current issue, why it matters, and what upgrading fixes.

Best choice: Claude or ChatGPT

Developers use AI for code review, debugging, and writing tests. Claude slightly better at complex reasoning and code quality. ChatGPT has a larger plugin ecosystem. Both handle coding well.

Key use case: Code review, bug fixing, writing tests, learning new frameworks, documentation

PROMPT
Review this React component and suggest improvements for: performance, readability, and error handling. What edge cases am I missing? [paste code]

Best choice: Gemini (if using Google) or Claude

Business professionals use AI for writing, research, and analysis. Gemini integrates with Gmail and Docs for seamless workflows. Claude for clear writing and complex analysis.

Key use case: Email drafting, meeting summaries, client briefs, proposal writing, market research

PROMPT
Summarize the key points from this earnings report and identify 3 strategic insights. [paste report text]
Lesson 2 โ€” Quick Reference
The Big Three
  • Claude (Anthropic) โ€” Best reasoning & writing, privacy-focused
  • ChatGPT (OpenAI) โ€” Best all-rounder, image generation, web search
  • Gemini (Google) โ€” Best free tier, integrates with Google Workspace
Other Solid Options
  • DeepSeek โ€” Free, strong coding, good alternative to ChatGPT
  • Llama (Meta) โ€” Open-source, can run locally, privacy-first
  • Mistral โ€” European option, good multilingual support
Pricing Reality
  • All have free tiers that are genuinely capable
  • Paid tiers: ~$20/month for unlimited usage
  • Start free. Only upgrade if you hit limits.
  • Most individuals never need to pay
Tool URLs
  • Claude: claude.ai
  • ChatGPT: chatgpt.com
  • Gemini: gemini.google.com
  • DeepSeek: chat.deepseek.com
  • Llama: llama.ai or perplexity.ai