Free-plan details checked against each provider's official pricing and help pages on October 8, 2026. This guide is based on that research, not on long-term hands-on testing. Free plans change often, so check the linked official page before you rely on a specific feature.
Almost every big AI company now offers a free chatbot. The catch is that "free" means something different on each one. Some give you unlimited basic chats but ration images and file uploads. Others are generous with features but cap how much you can use the best model. This guide compares what the free plans of the five best-known chatbots actually include, so you can pick the one that fits the job.
Quick comparison
| Chatbot | Best free use | Main free-plan limit | Account needed? |
|---|---|---|---|
| ChatGPT | Everyday questions and writing | Uploads, images, voice and deep research are limited | Yes, for most features |
| Google Gemini | Research and Google users | Only limited access to the top "Pro" model | Yes (Google Account) |
| Claude | Long documents and careful writing | Usage limits that reset over time | Yes |
| Microsoft Copilot | Quick answers with no sign-up | Images, history and voice need sign-in | Optional |
| Perplexity | Search-style answers with sources | Fewer advanced searches and uploads than Pro | Optional for basic search |
1. ChatGPT (OpenAI)
ChatGPT's free tier is the best all-rounder for everyday use. According to OpenAI's help center, free users get unlimited everyday text chats (subject to abuse-prevention safeguards), plus web search, data analysis, file and image uploads, image creation, and access to GPTs made by others.
- What's limited: file uploads, image generation, voice, data analysis and other tools each have their own usage limits, and advanced features are rationed more tightly than on paid plans.
- Good to know: OpenAI says ads may appear for free users in some countries, and free accounts can't create or publish their own GPTs.
- Paid options: Go, Plus and Pro raise these limits. Prices vary by country, so check the official page.
Official pages: ChatGPT Free Tier FAQ · ChatGPT pricing
2. Google Gemini
Gemini's free plan is surprisingly feature-rich. Google's subscriptions page lists the free tier as including the Gemini app with its fast "Flash" model and limited access to the more capable "Pro" model, image creation and editing, Deep Research, Gemini Live (voice conversation), Canvas, Gems, and 15 GB of storage shared across Gmail, Drive and Photos.
- What's limited: access to the strongest model, plus video generation, which Google lists only on paid plans.
- Paid options: Google AI Plus ($4.99/month in the US) gives 2x the free usage, and Google AI Pro ($19.99/month) gives 4x, plus Gemini inside Gmail and Docs.
- Best for: people already using Gmail, Drive and Android, and anyone who wants free deep-research reports.
Official page: Gemini subscriptions
3. Claude (Anthropic)
Claude is a strong choice for reading long documents and producing clear, well-structured writing. Anthropic's pricing page lists the free plan as including chat on web, desktop and mobile; web search, file creation and code execution; memory across conversations; connecting apps and tools; and creating "Artifacts" (shareable documents, small apps and visuals made in the chat).
- What's limited: how much you can use it. Free usage is capped and resets over time, so heavy users will hit the limit sooner than on Pro.
- Paid options: Pro is $20/month, or $17/month billed annually. Max plans start from $100/month.
- Best for: summarizing reports, drafting articles and working through long PDFs.
Official page: Claude pricing
4. Microsoft Copilot
Copilot is the easiest to try because you don't have to sign in. Microsoft's support page says free Copilot covers chat for writing help, brainstorming and summaries, web-based answers, and Copilot in Edge for summarizing web pages.
- Sign in for more: signing in with a free personal Microsoft account adds chat history, image creation, longer conversations and voice.
- What's not free: Copilot inside Word, Excel and Outlook needs a Microsoft 365 Personal, Family or Premium subscription, and Microsoft notes that AI usage limits apply there too.
- Best for: quick questions on a shared or work computer where you'd rather not create an account.
Official page: Copilot free vs. Copilot in Microsoft 365
5. Perplexity
Perplexity works more like a search engine than a chatbot: you ask a question and it answers with numbered links to its sources, which makes fact-checking easy. Basic searches are free.
- What's limited: Perplexity's Pro page describes the paid plan as adding the latest AI models, extended deep research, more file uploads and "deeper sourcing", so the free plan has fewer of these. Perplexity's own pages don't state exact free-plan numbers, so we haven't listed any.
- Best for: research questions where you want to see and check the sources.
Official page: Perplexity Pro
Which free AI chatbot should you use?
- For everyday questions and writing: ChatGPT.
- For research reports and Google users: Gemini.
- For long documents and careful writing: Claude.
- For no sign-up at all: Microsoft Copilot.
- For answers you can check against sources: Perplexity.
There's no rule saying you must pick one. Many people use two: one for writing and one for research. If you hit a free limit on one, switch to another.
Tips for using free AI chatbots safely
- Check important facts. All chatbots can make confident mistakes. Verify anything you'll publish, submit or act on.
- Don't paste private data. Avoid passwords, ID numbers, and confidential work or client information.
- Read the privacy settings. Most services let you control whether your chats are used to improve their models.
Spotted a change in one of these free plans? Let us know through our Contact page and we'll update this guide.
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