# THE BIG AI DEEP DIVE
**Every major chat AI, compared honestly — in plain English.**
From alchemy-ai.dev — free forever, no affiliate links, no sponsored rankings.
Last updated: July 2026. Prices and models change fast — always double-check on the official site before you pay for anything.

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## HOW TO READ THIS GUIDE

You don't need to be a programmer to read this. Every term is explained the first time it shows up. If you only remember one thing, remember this:

> **There is no "best AI." There is only the best AI for what YOU are trying to do.**

Every tool below gets the same treatment: what it is, what it costs, what it's genuinely great at, where it falls short, and who should actually use it. The good AND the bad — because marketing pages only tell you half the story.

**Two quick terms you'll see a lot:**
- **Context window** — how much the AI can "hold in its head" at once during a conversation. Bigger = it remembers more of what you told it before it starts forgetting.
- **Tokens** — how AI companies measure text. Roughly 1 token = 3/4 of a word. Usage limits and API prices are measured in tokens.

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## THE QUICK ANSWER TABLE

| AI | Made By | Best At | Free Tier? | Paid Starts At |
|---|---|---|---|---|
| **Claude** | Anthropic | Building apps, coding, writing, long documents | Yes | $20/mo (Pro) |
| **ChatGPT** | OpenAI | All-around use, images, huge community | Yes | $8/mo (Go), $20/mo (Plus) |
| **Gemini** | Google | Google apps, huge documents, video generation | Yes (most generous) | $4.99/mo (AI Plus) |
| **Grok** | xAI | Real-time info from X, fewer filters | Yes | $8/mo (X Premium) |
| **DeepSeek** | DeepSeek (China) | Free strong reasoning, dirt-cheap API | Yes | Free chat |
| **Perplexity** | Perplexity AI | Research with sources you can check | Yes | $20/mo (Pro) |
| **Copilot** | Microsoft | Word, Excel, Outlook, Teams | Yes | $20/mo (Pro) |
| **Meta AI / Llama** | Meta | Free everyday use; running AI on your own computer | Yes | Free |
| **Pi** | Inflection | Talking through personal stuff | Yes | Free |

Now the deep dive.

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## CLAUDE (Anthropic)

**What it is:** A chat AI from Anthropic, a company founded by former OpenAI researchers with a heavy focus on safety and quality. As of mid-2026 the lineup is the Claude 5 family (including Fable 5) alongside Opus 4.8, Sonnet 5, and the fast, cheap Haiku 4.5.

**What it costs:**
- **Free** — rate-limited but same quality models. You get cut off, not dumbed down.
- **Pro — $20/month** (about $17/month billed annually)
- **Max — $100–$200/month** for heavy builders
- **API** — pay per token (only matters if you're building software that calls Claude)

**THE GOOD**
- The best AI for building software, period. This whole site's workflow is built on it for a reason. Claude Code (its coding agent) consistently tops the real-world coding benchmarks.
- Writing quality is the most natural of any AI — less "AI-sounding" filler.
- Big context window. Feed it your whole project document (your CLAUDE.md) and it actually keeps track.
- Follows instructions carefully instead of doing something "close to" what you asked.
- The free tier is the same brain as the paid tier — just with a usage cap.

**THE BAD**
- Usage limits are real. Even on Pro you can hit the wall during a long build session.
- No built-in image generation. Claude can look at images, but it won't make you one.
- You have to bring your own context. It doesn't automatically remember your last conversation unless you set that up.

**THE UGLY**
- Getting throttled mid-task with no warning is genuinely frustrating. Plan your sessions (see the Token Management page).
- Sometimes refuses harmless requests out of caution, and the refusal wording can feel preachy.
- If you're building anything real, the free tier will push you to Pro fast. That's not evil — but know it going in.

**Who it's for:** Anyone building something — an app, a website, a business document, a book. If you follow this site's workflow, Claude is your primary tool.

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## CHATGPT (OpenAI)

**What it is:** The AI everyone's heard of. As of mid-2026 the flagship model is GPT-5.5, and ChatGPT still has by far the biggest user base — which means the most tutorials, the most community help, and the most integrations.

**What it costs:**
- **Free** — limited messages on the newest model (roughly 10 per 5 hours before it drops you to a smaller model)
- **Go — $8/month** — a budget tier for casual use
- **Plus — $20/month** — around 160 messages every 3 hours on the flagship model
- **Pro — $100/month** and **Pro Max — $200/month** — heavy-use tiers most people don't need
- **API** — pay per token

**THE GOOD**
- The best all-rounder. Decent-to-great at almost everything: writing, images, voice, search, brainstorming.
- Built-in image generation and strong voice mode.
- Memory feature — it can remember facts about you between conversations (you control this).
- Biggest community on Earth. Whatever problem you hit, someone has posted the answer.
- In this site's workflow, the free tier is your **debugger and planner** — paste in error screenshots, get plain-English explanations, carry the fix back to Claude.

**THE BAD**
- In long, complex conversations it loses the thread — forgets details, contradicts itself. Not ideal for driving a big multi-step build.
- Quality varies between model updates, and updates arrive without much warning.
- The model picker is confusing. Multiple models, different limits per tier — it's a lot.

**THE UGLY**
- Your requests can get silently routed to lighter, cheaper models even on paid plans. You don't always get told which brain answered you.
- Free-tier limits reset on short windows, so it can feel great one minute and cut you off the next — right in the middle of debugging.

**Who it's for:** Everyone, honestly — as a general assistant. In the build workflow, use the free tier as your planner and debugger so you save your Claude usage for actual building.

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## GEMINI (Google)

**What it is:** Google's AI, baked into Search, Gmail, Docs, and Android. Flagship model as of mid-2026 is Gemini 3.1 Pro, with fast "Flash" models as the everyday default.

**What it costs:**
- **Free** — the most generous free tier of any major AI right now
- **AI Plus — $4.99/month** — cheapest paid tier of any major AI (includes cloud storage)
- **AI Pro — $19.99/month** — flagship model with a 1-million-token context window
- **AI Ultra — from $99.99/month** — power-user tier

**THE GOOD**
- The biggest context window in the business — up to 1–2 million tokens on Pro-class models. That's entire books, or years of documents, in one conversation.
- If you live in Gmail/Docs/Drive, it's already where you work.
- Strong research features with citations, and the best video generation (Veo) of the big players.
- The free tier is genuinely usable — arguably the best free deal in AI right now.

**THE BAD**
- Coding is capable but historically less reliable than Claude for driving a full app build.
- The product naming changes constantly (Bard → Gemini → Gemini Advanced → AI Pro...). What you read online may describe last year's product.
- Very tied to the Google ecosystem — the magic drops off if you don't use Google's apps.

**THE UGLY**
- Google is an advertising company. Read the data settings before you feed it personal or business documents, and turn off what you're not comfortable with.
- Feature availability differs by country and account type in confusing ways.

**Who it's for:** People already living in Google's world, anyone analyzing huge documents, and budget users — that $4.99 tier and the free tier are hard to beat.

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## GROK (xAI)

**What it is:** Elon Musk's AI, wired directly into X (Twitter). Its superpower is real-time information — it sees what's happening on X right now. It's also the least filtered of the big AIs.

**What it costs:**
- **Free** — limited access
- **X Premium — $8/month** / **X Premium+ — $40/month** (bundled with X features)
- **SuperGrok Lite — $10/month**, **SuperGrok — $30/month** (full model, research tools, image/video generation)
- **SuperGrok Heavy — $300/month** (you almost certainly don't need this)

**THE GOOD**
- Best real-time awareness of any AI — breaking news, trends, public sentiment, right now.
- Fewer content filters. It'll engage with controversial topics other AIs tiptoe around.
- Strong raw benchmark scores — the models themselves are genuinely competitive.
- Image and video generation included on paid tiers.

**THE BAD**
- Not built for structured, step-by-step app building. It's a research and conversation tool, not a construction site.
- The pricing tiers are a maze (six of them, split between X bundles and standalone plans).
- Its personality can be... a lot. Snark is built in.

**THE UGLY**
- "Less filtered" cuts both ways — it can confidently repeat whatever is loudest on X, including things that are wrong. Double-check anything important.
- Tied to one person's company and platform decisions, which change abruptly.

**Who it's for:** Research, fact-checking against live events, and anyone frustrated by other AIs refusing topics. Not your build tool.

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## DEEPSEEK

**What it is:** A Chinese AI lab that shocked everyone by releasing free, open models that compete with paid Western flagships — especially at math and reasoning.

**What it costs:**
- **Chat: free.** That's the pitch.
- **API** — pay per token, and it's some of the cheapest capable AI on the market.

**THE GOOD**
- Genuinely strong reasoning for exactly $0.
- Open source — the models are public, so the community can inspect and run them.
- The API is so cheap it makes experimentation nearly free for developers.

**THE BAD**
- The app and website are bare-bones compared to ChatGPT or Claude.
- Servers get overloaded; expect slowdowns and outages.
- Weaker ecosystem — fewer integrations, fewer tutorials, less community help.

**THE UGLY**
- **Data goes to servers in China**, under Chinese law. Do not paste anything private, personal, or business-sensitive into it. For public-info questions, fine. For your business plan, no.
- Heavy topic censorship around anything sensitive to the Chinese government.

**Who it's for:** Budget users who want strong reasoning for free and are only asking about non-private things. Developers who want a dirt-cheap API.

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## PERPLEXITY

**What it is:** An AI search engine. Ask a question, get a written answer **with numbered citations linking to real sources**. Think "Google, but it reads the results for you and shows its work."

**What it costs:**
- **Free** — solid for everyday lookups
- **Pro — $20/month** — better models, file uploads, more advanced searches

**THE GOOD**
- Citations. You can actually check where an answer came from — no other mainstream AI makes this as central.
- Best replacement for Googling technical questions ("what does this error mean," "compare these two services").
- Fast, clean, no ads in your face.

**THE BAD**
- It's a research tool, not a build tool. It won't drive a project or write your app.
- An answer with confident-looking citations can still be wrong — sometimes the source doesn't quite say what the summary claims. Click the links on anything important.

**THE UGLY**
- Pro limits have been quietly slashed before — in early 2026, Deep Research on Pro dropped from effectively unlimited to about 20 runs a month. What you buy today may shrink tomorrow.
- Publishers have accused it of scraping content against their wishes — an ethics question you may care about.

**Who it's for:** Research. In this site's workflow it's the "look it up" tool — checking facts, comparing services, understanding errors — while Claude builds and ChatGPT debugs.

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## MICROSOFT COPILOT

**What it is:** Microsoft's AI (built on OpenAI's models), woven into Windows, Word, Excel, Outlook, and Teams.

**What it costs:**
- **Free** — basic chat with GPT-class models
- **Copilot Pro — $20/month** — AI inside Word, Excel, and other Office apps for individuals
- **Microsoft 365 Copilot — around $21–$30/user/month for businesses**, on top of a required Microsoft 365 license

**THE GOOD**
- If your life is in Word/Excel/Outlook, the AI is right there — drafting documents, summarizing email threads, explaining spreadsheets.
- The free tier gives you OpenAI-quality models at no cost.
- For businesses already on Microsoft 365, it respects your existing permissions and files.

**THE BAD**
- Outside Microsoft's apps, there's little reason to pick it over ChatGPT or Claude.
- Feature quality varies wildly between apps — great in some, shrug-worthy in others.

**THE UGLY**
- The business pricing is a trap for the unwary: the sticker price is an *add-on* to Microsoft 365 licenses you must already have. Real per-person cost can be 2–3x the advertised number.
- Microsoft renames and reshuffles Copilot products constantly. What an article calls "Copilot" may be a different product than the one you're looking at.

**Who it's for:** Office workers and Microsoft-based businesses. Not a build tool for this site's workflow.

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## META AI / LLAMA (Meta)

**What it is:** Two things wearing one name. **Meta AI** is the free assistant inside Facebook, Instagram, and WhatsApp. **Llama** is the family of open-weight models behind it — "open-weight" meaning Meta gives away the actual model files, so anyone can download and run them on their own machine. Llama 4 (Scout and Maverick) arrived in 2025–2026 and can handle both text and images.

**What it costs:**
- **Meta AI: free** inside Meta's apps.
- **Llama models: free to download.** Your cost is the computer to run them on.

**THE GOOD**
- Running AI locally means **total privacy** — nothing you type leaves your machine — and no subscription, no rate limits, no internet needed.
- Tools like **Ollama** and **LM Studio** make local AI genuinely easy now: install, pick a model, chat.
- Thousands of community fine-tuned versions exist for specific jobs.

**THE BAD**
- The big Llama 4 models need serious hardware (think workstation/server-grade graphics cards). On a normal PC you'll run smaller models, which are noticeably less capable than Claude or GPT.
- No polish. Local AI is a developer hobby experience, not a consumer product.
- Meta AI (the assistant in your apps) is fine but mid — it's the convenience play, not the quality play.

**THE UGLY**
- The hardware rabbit hole is real. People spend $2,000+ chasing local performance that a $20/month subscription beats.
- "Open source" here has an asterisk — Meta's license has restrictions actual open-source projects don't.

**Who it's for:** Privacy-focused tinkerers and developers. If "my data never leaves my computer" matters more to you than raw capability, this is your lane.

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## PI (Inflection AI)

**What it is:** A conversational AI designed to feel warm and human — built for talking through your day, your decisions, your feelings. Note: most of the original team was absorbed into Microsoft back in 2024, so Pi is in maintenance mode — still running, not really advancing.

**What it costs:** Free.

**THE GOOD**
- The most naturally human-feeling conversation of any AI. Great listener, gentle voice mode.
- Zero pressure, zero productivity angle. Sometimes that's exactly what you need.

**THE BAD**
- Not a build tool, research tool, or work tool. Don't ask it to code.
- Development has largely stalled; the gap between Pi and the majors keeps widening.

**THE UGLY**
- An AI that feels this human can become a crutch. It's a supplement to real support systems, not a replacement — and it's not a therapist.

**Who it's for:** Personal reflection and low-stakes conversation. Nothing else on this list does that job as kindly.

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## THE BOTTOM LINE — THE STACK THAT WORKS

You don't pick one. You stack them. Here's the combination this site teaches, and why:

1. **Claude ($20/mo Pro)** — your builder. It writes the code, follows the CLAUDE.md, does the heavy lifting.
2. **ChatGPT (free)** — your debugger and planner. Errors go here first; plans get drafted here so you don't burn Claude usage on talk.
3. **Perplexity (free)** — your researcher. "Which database should I use?" "What does this error mean?" — with sources.
4. **Gemini (free)** — your document analyst, when something is too big for the others.

**Total cost: $20/month.** That stack will take you from idea to deployed app.

And if $20 is too much right now? Claude free + ChatGPT free + DeepSeek free will still get you surprisingly far — you'll just work in shorter sessions.

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*From alchemy-ai.dev — a free AI education platform by Stacked Alchemist LLC. No course to sell. No paywall. If this helped you, the Ko-fi button is on the site — and if it didn't, tell us why so we can fix it.*