You want to get into artificial intelligence without paying for a subscription, and you keep running into the same three names: ChatGPT, Claude and Gemini. All three offer a free version, all three write perfectly good English, and all three are more than enough to learn with. So the real question isn't which one is „the best" in absolute terms, but which one matches what you want to do this week. A student revising for exams, a contractor writing up quotes and an assistant sorting through emails won't make the same choice.
You'll find three things here: an honest comparison of the three free plans (strengths, limits, quotas), a practical way to test them without burning your whole evening, and a clear marker for the moment free stops being enough. Good news along the way: nothing forces you to pick just one. Using all three side by side is actually the smartest move when you're starting out, since each quota refills on its own schedule.
Method 1: learn how to use them before picking a side
Which tool you choose matters far less than your ability to give it clear instructions: that's the skill to work on first.
Most beginners try ChatGPT for ten minutes, find the answer „average" and conclude that AI is overhyped. In 90% of cases the problem isn't the model, it's the request: too vague, no context, no example, no expected format. The same well-built prompt gives a solid result on all three tools. A sloppy prompt gives a disappointing result on all three too.
That's exactly the angle Skilzy takes — a French e-learning platform where you learn AI and put it to work right away. More than 15 programs cover image creation, video (UGC content, ads, faceless channels, avatars, voiceovers), music, automation with n8n, prompt writing and AI-assisted coding. The built-in AI Lab gives you access to the real tools with credits included, which saves you from stacking three or four €20 subscriptions.
Two state-recognized certifications are eligible for public funding: RS7439 (content marketing with AI) and RS6792 (AI and sales).
If you want to see which track fits your job, take a look at the list of Skilzy programs for learning to use AI: topics are sorted by use case, not by technology. That said, you can absolutely start with the free versions detailed below. The two approaches complement each other: free tools to get your hands dirty, structured training the day you want professional results and a certification to put on your résumé.
Method 2: ChatGPT free, the simplest place to start
Free ChatGPT is still the most versatile option: it writes, summarizes, translates, searches the web, reads your files and generates a few images, all in the same window.
It's the tool I recommend first to anyone who has never tried anything, for one simple reason: it's the best documented. Every possible sticking point has already been explained in ten tutorials. If you want a full step-by-step, our guide on how to use ChatGPT as a beginner walks through signing up and your first prompts.
What you get without paying:
- Access to OpenAI's recent model with limited usage, then an automatic switch to a lighter model once the quota is hit. You're never cut off, just slowed down.
- Web search, so answers that take current events into account and cite their sources.
- File uploads (PDF, image, spreadsheet) to summarize or analyze a document.
- Voice mode, very handy on mobile for practicing a language or dictating ideas while you walk.
- A memory that keeps your preferences from one conversation to the next.
Its limits, honestly: image generation is tightly rationed on the free plan, quotas vary with server load (they're tighter late in the day) and answers tend to play it safe, with lots of bullet lists. For the exact limits at any given moment, the most reliable source is ChatGPT's official pricing page, since these caps shift several times a year.
Best for: general use, office work, studying, translation, first images, looking up recent information.
Method 3: Claude free, the best one for writing
Free Claude is the most comfortable of the three with long, nuanced, well-structured text, and with document analysis.
Built by Anthropic, Claude writes in a more natural, less textbook style than its competitors. In practice: fewer bold headings everywhere, fewer „it is essential to" constructions, paragraphs that actually hold together. If your main need is writing (tricky emails, meeting notes, a website page, a cover letter, an internal memo), it's often the one that needs the least cleanup.
Its strengths on the free plan:
- Long-document analysis: you drop in a 40-page PDF and ask questions about it.
- Artifacts, a separate window where Claude produces a document, a table or a mini-tool you can tweak as the conversation goes on.
- A tendency to say when it doesn't know, rather than confidently making things up.
- Strong performance on code, even for someone who has never programmed.
Its limits: no image generation, and a message quota calculated in blocks of a few hours. If you run a long analysis session back-to-back, you can end up blocked until the reset. Bigger documents also burn through the quota faster. The tier details are listed in the plans published by Anthropic.
Best for: professional writing, document summaries, analysis, reasoning, first steps in code. For more advanced use, our article on building a company chatbot with Claude shows how far the tool can go.
Method 4: Gemini free, unbeatable inside the Google ecosystem
Free Gemini is the obvious pick if you already use Gmail, Google Docs, Drive or an Android phone: the account already exists and the AI sits right next to your files.
There's nothing to create, your Google account is enough. On Android, Gemini can replace the voice assistant and answer from any screen. On desktop, it shows up in Gmail and Docs to write or summarize without leaving the page, depending on your country and account type.
Its free-plan advantages:
- Image generation, noticeably more generous than its competitors offer for free.
- A very large context window, useful for handing over several documents at once.
- YouTube video summaries and image reading (a photo of a problem set, a label, a floor plan).
- Direct integration with Google Search for recent factual information.
Its limits: quality varies more from one request to the next, because you aren't always served by the most powerful model on the free plan. Work or school accounts sometimes have the integrations switched off by their administrator, and some features land later in France than in the US.
Best for: Android users, anything touching Gmail and Docs, images, factual questions, everyday mobile use.
The comparison in one table
If you only remember one line: ChatGPT for versatility, Claude for writing, Gemini for the Google ecosystem and images.
| Criterion | ChatGPT free | Claude free | Gemini free |
|---|---|---|---|
| Getting started | The easiest, heavily documented | Simple, clean interface | Instant with a Google account |
| Writing quality | Solid, slightly textbook style | The most natural of the three | Solid, variable |
| Image generation | Yes, very limited | No | Yes, the most generous |
| Document analysis | Yes | Excellent on long files | Yes, handles large volumes |
| Web search | Yes | Yes | Yes, backed by Google |
| Main limitation | Quotas vary with load | Messages capped per time block | Most powerful model reserved for paid plans |
One detail that will save you unpleasant surprises: these quotas change often, sometimes from one month to the next. Never trust a dated comparison, this one included, for a precise number. Check the vendors' official pages before paying for anything.
How to choose in 15 minutes: the three-prompt test
Open all three tools in three tabs, send exactly the same prompt to all three, and keep the one whose answer needs the fewest corrections.
It's the only reliable method, because „best" depends on how you write and what you do for a living. Here are three prompts to copy as-is, replacing what's in brackets.
Prompt 1, real writing: „You are a [your job]. Write a follow-up email to a client who hasn't replied in three weeks. Polite but firm tone, 120 words maximum, no canned phrases. Context: [two sentences about the situation]."
Prompt 2, comprehension: upload a document you know well (a report, a contract, an invoice) and ask: „Summarize this document in 5 points, then list the 3 most important pieces of information and the 2 grey areas."
Prompt 3, reasoning: „I'm torn between [option A] and [option B] for [your goal]. Ask me 4 questions before answering, then recommend one option and justify it."
That third prompt is the most revealing: a good assistant questions you before making a call. The one that answers immediately without asking anything will serve you generalities.
Count how many corrections each answer needs. The tool that needs the fewest on your own topics is your main tool. The other two become your backups when you hit a quota, which happens sooner than you'd think.
When is free no longer enough? Three signals: you're hitting the quota several times a week, you need to generate images or videos at volume, or you want to automate repetitive tasks instead of copy-pasting by hand. Before you reach for the card, go through the resources for learning AI for free and ask yourself about the learning path rather than the tool: our guide to learning AI in 2026 as a beginner explains what order to build the skills in.
Key takeaways
All three free versions are good. Take ChatGPT if you're starting from zero, Claude if you write a lot, Gemini if you live inside Google. Use them side by side — that's three free quotas instead of one. And keep in mind that time spent phrasing your requests well pays off more than any tool switch: it's the skill that still holds up when a new model drops next month.
