The 7 best free AI tools (2026), tested

There’s no single best free AI tool: the right one depends on the task.

The strongest free options in 2026 are ChatGPT, Google Gemini, Claude, Perplexity and Microsoft Copilot. Canva rounds them out for visual work, and Gemini Notebook (formerly NotebookLM) for your own documents.

The verdict: most teams run just fine on two or three free versions. Only pay once a tool bumps against its limit every day.

“Free” here almost always means a free version with limits, not a complete product without a subscription. You get a strong model with a usage cap, a lighter model than the paid tier, or a daily limit.

For many B2B and marketing tasks, that’s more than enough.

How we tested: on 17 October 2026 we gave four assistants the exact same prompt. We screenshotted the first answer. Free plans and prices come from each vendor’s own page, checked the same day.

What are the best free AI tools at a glance?

ChatGPT, Gemini, Claude, Perplexity and Copilot cover almost every task between them. The table shows what each free plan gives you:

Each tool gets its own block further down, with the same labels.

What did the free AI tools answer to the same prompt?

They answered very differently, even to a short prompt. We typed this one prompt into four assistants:

“Explain in 3 short bullet points what generative engine optimization (GEO) is, for a B2B marketing manager.”

It’s a realistic B2B task. It’s also our own field. So we can judge the answers.

What came back?

The longest answer ran well past the shortest. Here’s how the four compare:

The short version:

• ChatGPT followed the brief most literally
• Gemini added an intro the prompt didn’t ask for
• Perplexity was the only one you can fact-check
• Claude gave the most usable answer, on a paid plan

Every assistant named ChatGPT among the AI tools GEO targets.

Microsoft Copilot is missing: we couldn’t run the prompt without signing in.

How do you recognise a good free AI tool?

By what the free version really gives you, not by the logo. Check these four points before you fold a tool into your work:

• Model: do you get the best model or a lighter variant?
• Limit: a cap on messages, uploads or research queries per day?
• Data: is free input used for training unless you turn it off?
• Task: writing, research with sources, or work inside your software?

On most tools you’ll hit a daily or hourly limit. Or you’ll get slower access at peak times.

Writing, researching with cited sources and working inside your existing software are three different jobs. Think of editing a proposal versus fact-checking a supplier, for example: choose per task.

What does each free AI tool do best?

Every tool below has a clear strength and a clear limit. For each one you’ll see the same labels, a screenshot and our test results.

1. ChatGPT (free version)

Best for: writing, summarising, brainstorming and first drafts of marketing copy.

Biggest strength: the tightest, most on-brief answer in our test.

Free plan: unlimited text chats with GPT-6 (subject to abuse guardrails), with limited uploads, image creation, voice chats and deep research (ChatGPT pricing, checked 17 October 2026).

Price: the paid plans are called Go, Plus and Pro.

Watch out: ChatGPT showed no sources for this answer.

The pricing page shows what the Free column includes:

It’s the best known. And it’s still a strong foundation. The free version now gives you unlimited everyday text chats on a recent OpenAI model.

The limits sit on the heavier features: uploads, image creation, voice, memory and deep research.

Want advanced reasoning models, more deep research, projects and scheduled tasks? Then you’ll need a paid plan.

Here’s the free answer to our GEO prompt:

ChatGPT free (temporary chat), 17 October 2026: three bullets, about 90 words, no sources.

In our test: ChatGPT did exactly what we asked: three bullets, a bold lead line each, no intro.

It linked GEO to the buyer’s shortlist and to pipeline. That’s the right frame for a B2B manager.

What it didn’t do: show where any of it came from.

Using it at work? Read ChatGPT for business first.

2. Google Gemini (free version)

Best for: research and anyone who already works in Gmail, Docs and Drive.

Biggest strength: the closest tie-in with the Google tools your team already uses.

Free plan: the Flash-Lite model with image generation, Deep Research, Gemini Live, Canvas and Gems. Usage limits refresh every 5 hours, up to a weekly cap (Gemini subscriptions, checked 17 October 2026).

Price: Google AI Plus $4.99/month, Google AI Pro $19.99/month.

Watch out: it didn’t stick to the 3-bullet format.

The subscriptions page puts the free plan next to the paid ones:

Gemini’s free plan next to the paid Google AI plans, checked 17 October 2026.

Gemini is Google’s assistant. It sits close to the rest of Google. The tie-in with Search, Gmail and Docs makes it attractive if you already work in that ecosystem.

Note the model. The free consumer plan lists Flash-Lite, while our test ran on a Workspace account with Flash.

So a free personal account may answer a little more briefly. The newest, heaviest models and higher limits sit in the Google AI plans.

Here’s what Gemini answered:

Gemini (Google Workspace account, Flash model), 17 October 2026: an intro sentence plus three bullets, about 120 words.

In our test: Gemini opened with a definition sentence before the three bullets, so it bent the format.

The content was solid: original research, data points, expert quotes. No sources shown.

But phrases like “LLM answer engines” and “citation-worthy data” read more like an SEO brief than a manager’s summary.

For research with fresh web results, free Gemini is a good choice. Want your company to show up in it? See how to rank in Google Gemini.

3. Claude (free version)

Best for: editing, nuanced writing and making sense of long documents.

Biggest strength: the most actionable answer in our test.

Free plan: Sonnet and Haiku models, web search, file creation, memory, Artifacts and up to 5 projects, with usage on a rolling five-hour window (Claude pricing, checked 17 October 2026).

Price: Pro $20/month, or $17/month billed yearly.

Watch out: we tested a paid plan, so the free tier may differ.

The pricing page puts the Free plan next to Pro:

Claude’s Free plan next to Pro, checked 17 October 2026. Prices on this page showed in euro from Belgium (Pro EUR 15 per month billed yearly).

Claude is made by Anthropic. It’s known for clear, nuanced text and strong reasoning across long passages.

If you hit the cap, you wait for the five-hour window to reset. The paid version raises the limits and unlocks extras such as Research and the Opus models.

If you write, edit or need to make sense of complex documents, free Claude is often the most pleasant writing partner.

Here’s how Claude answered:

Claude, 17 October 2026, tested on a paid plan in an incognito chat: three labelled bullets, about 150 words, no sources.

In our test: we ran Claude on a paid account in an incognito chat. The free tier, with Sonnet and Haiku and lower limits, may answer differently.

It was the most useful answer for a manager. It covered what GEO is, why it matters and how to do it.

Its “why” was sharp: “if the AI doesn’t name you when someone asks ‘best tools for X’, you may never make the shortlist.”

The “how” went down to review platforms, analyst reports and tracking your mentions against competitors. It was also the longest, and it showed no sources.

How it compares head to head: Claude vs ChatGPT.

4. Perplexity (free version)

Best for: quick research where you need to check the sources.

Biggest strength: the only assistant in our test that showed its sources.

Free plan: standard searches plus 3 Pro Searches a day and 1 Research query a month. No advanced models or image generation (Perplexity plan comparison, checked 17 October 2026).

Price: the help page we could read lists no Pro price.

Watch out: the sources were mostly marketing blogs.

Perplexity’s own plan comparison shows the limits:

Perplexity’s own Free vs Pro comparison, checked 18 October 2026.

Perplexity isn’t a classic chatbot. It’s an answer engine. It searches the web and gives an answer with the sources cited alongside.

The free version is enough to look something up and check where it came from. The deeper Pro Searches and Research runs are where the cap bites.

Here’s the free answer, with a source chip after every bullet:

Perplexity free, logged out, 17 October 2026: three bullets, a source chip on every bullet and 10 sources in total.

In our test: Perplexity was the only tool where you can click through and check every claim. Each bullet carried a source chip, and the footer counted 10 sources.

It also added what the others missed: how to measure GEO (brand mentions, citations, prompt coverage, pipeline).

One click on the footer opens the sources behind the answer:

The 10 sources behind Perplexity’s answer, one click from the footer.

The citations show you where to verify, not that the claims are right.

For B2B market research, competitor checks and factual questions, it’s one of the most useful free tools out there. Want to be one of those sources? Read Perplexity SEO.

5. Microsoft Copilot (free version)

Best for: people who work in Windows, Edge and Microsoft 365 all day.

Biggest strength: it’s already in your browser and taskbar.

Free plan: AI chat for writing and brainstorming, web answers and page summaries in Edge. Signing in with a personal account adds chat history, image creation, longer conversations and voice (Microsoft support, checked 17 October 2026).

Price: Copilot inside Microsoft 365 Personal, Family or Premium; the page lists no prices.

Watch out: free Copilot and Microsoft 365 Copilot are easy to confuse.

This is the free Copilot a logged-out visitor sees:

Copilot is Microsoft’s assistant, woven into Windows, Edge and Bing. If you work a lot in the Microsoft environment, the barrier is low.

Copilot in Microsoft 365 is a different product. It’s paid. That variant works inside Word, Excel and Outlook; the free consumer version doesn’t.

In our test: the Copilot page we opened asked us to sign in before we could chat, so we didn’t run the prompt.

Microsoft says sign-in is optional for the free version. So your experience may differ per entry point.

The full comparison: Copilot vs ChatGPT.

6. Canva (free version)

Best for: social posts, presentations and quick visuals without a designer.

Biggest strength: polished visuals with no design experience.

Free plan: the full design editor plus up to 20 uses a month of Standard or Premium AI tools, according to Canva’s help centre (checked 17 October 2026).

Price: Canva Pro raises that to 200 Premium AI uses. The pricing page didn’t load for us, so we quote no price; the home screen offered a 30-day free trial.

Watch out: only 20 AI uses a month on the free plan.

Canva’s help centre lists the AI allowance per plan:

Canva’s AI allowance per plan, checked 18 October 2026.

Canva isn’t a language model. It’s a design tool. For marketers, the free version is worth its weight in gold.

It has AI features, such as text-to-image and background removal, within that monthly allowance. The heavier AI features and the full brand library live in Canva Pro.

You start from a format or a search:

Canva’s home screen, 17 October 2026: start from a format, or search; the trial button sits top right.

For quick, polished-looking visual work, the free version is enough for most B2B teams.

More marketer tools in AI tools for marketers.

7. Gemini Notebook, formerly Google NotebookLM (free)

Best for: asking questions of your own reports, quotes and internal documents.

Biggest strength: it answers from your sources only, with references to the passage.

Free plan: free to start with a Google account (Google’s announcement).

Price: extras like code execution go to paid Google AI plans first.

Watch out: it works on your own material, not the open web.

Here’s how Gemini Notebook presents itself:

Gemini Notebook, the new name for NotebookLM, as it presents itself on 17 October 2026.

Google renamed NotebookLM to Gemini Notebook on 16 July 2026. It calls it the same standalone product.

You upload your own documents. It answers questions, such as “what did we quote last year?”, purely from those sources, with references to the exact passages.

That way you can search a stack of reports, quotes or internal knowledge fast, without the model making things up.

For your own material, it’s one of the most useful free tools around right now.

Which free tool do you choose when?

Choose by the task, not by the name. Here’s the short version:

• Writing and editing: ChatGPT or Claude
• Research with verifiable sources: Perplexity or Gemini
• Working in Microsoft or Google: Copilot or Gemini
• Your own documents: Gemini Notebook (NotebookLM)
• Visual work: Canva

We use Claude and ChatGPT most ourselves, along with Claude Code. Not just for text, but for design and dashboards too.

Which stack fits your situation?

After the paid top performers too? Check our broader list of the best AI tools. If ChatGPT is your default, see the ChatGPT alternatives.

How B2B buyers use these tools while they shortlist, in AI tools in the B2B buying journey.

How did we test?

On 17 October 2026 we gave four assistants the same prompt, with no follow-up questions and no custom instructions. For each one we screenshotted the first answer.

The setup per tool:

• ChatGPT: free, in a temporary chat
• Gemini: Google Workspace account, Flash model
• Perplexity: free, logged out
• Claude: paid account, in an incognito chat

So Claude ran on a paid plan; the free tier may answer differently. Microsoft Copilot asked us to sign in, so it isn’t in the comparison.

Canva and Gemini Notebook aren’t chat assistants for this kind of question. That’s why we show their home screens instead.

Free plans and prices come from each vendor’s own page on the same day, in the currency the page showed. We don’t get paid by any of these vendors.

Want to compare the big three in more depth? See ChatGPT vs Claude vs Gemini.

Frequently asked questions

What is the best free AI tool in 2026?

There’s no single winner. For writing and editing, ChatGPT and Claude are strongest; for research with verifiable sources, choose Perplexity or Gemini; and for your own documents, Gemini Notebook (formerly NotebookLM). Most teams combine two or three free versions.

Are free AI tools really free?

Most of the time you get a free version with limits, not a complete product without a subscription. Think of a cap on messages, a lighter model after a number of questions, or slower access at peak times. For many B2B tasks that’s plenty, and you only pay once you hit the limit daily.

Which free AI tool shows its sources?

In our test only Perplexity showed sources: a chip on every bullet and 10 sources in total. ChatGPT, Gemini and Claude answered the same prompt without visible sources. They can search the web too, but for a short explainer they didn’t show where the answer came from.

Is my data safe in a free AI tool?

It varies per tool. On some free versions your input is used to train models unless you turn that off in the settings. Read the privacy policy before you enter sensitive or client data, and for confidential work prefer a business variant with clear agreements.

What does this mean for your discoverability?

These exact free AI tools are where your buyers do their research today.

Someone looking for a supplier no longer asks Google alone. They ask ChatGPT, Gemini or Perplexity.

So the question isn’t only which tool you use. It’s whether your company shows up in those answers as a recommended source.

That’s what generative engine optimization is about: making sure AI models cite your content when your buyer asks a relevant question.

Our own test shows it. The one tool that showed sources pulled them from marketing blogs with clear, quotable explanations.

As a GEO agency, we help B2B companies become that cited source.

Want to know whether ChatGPT, Gemini and Perplexity already name your company? Book a call and we’ll show you the answers to the questions your buyers ask.