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"Free" and "no subscription" are not the same promise, so it helps to split them. Plenty of tools dangle a free trial that wants your card on file and bills you the moment you forget to cancel. The picks below want none of that. You open a browser, you type, and the only thing standing between you and the model is a message counter. Where that counter sits, and what happens when you hit it, is the whole story.
Two tools clear the bar with room to spare. Claude free gives you Claude Sonnet 5, web search, file uploads, and code execution inside Artifacts, all without a card; Anthropic made Sonnet 5 the default model for its Free and Pro plans. ChatGPT free gives you GPT-5.6 Luna with unlimited text chats, a Think button for harder questions, file uploads, image generation, and voice mode. Claude will carry a normal day of questions before it asks you to wait; ChatGPT's text chat no longer has a message cap to wait on, though uploads and images still do. If you want a closer look at the model under Claude's free tier, the Claude Sonnet 5 launch coverage has Anthropic's published figures, and the Haiku 4.5 review covers where the cheaper Claude tiers stop being enough and Sonnet earns the step up.
What each free tier gives you, and where the wall is
The table is the fast version. OpenAI now describes ChatGPT Free text chat as unlimited, subject to abuse guardrails. Anthropic doesn't publish an exact free-tier message count for Claude, and the cap moves with server load and how long your conversation gets. The observed ranges this page used to quote described the older Sonnet 4.6 and GPT-5.5 free tiers and no longer apply.
| Tool | What you get free | Where the wall is | Card needed? |
|---|---|---|---|
| Claude (claude.ai) | Claude Sonnet 5, web search, file upload, code execution | A usage cap that resets; no fixed message count published | No |
| ChatGPT (free) | GPT-5.6 Luna, Think button, file upload, image generation, voice mode | Unlimited text chats (abuse guardrails apply); file uploads, images, and other tools stay limited | No |
| Microsoft Copilot | Web access, unlimited searches, DALL-E 3 image generation | No hard chat cap stated; throttles under heavy use | No |
| Google Gemini (app) | Google lists Gemini 3.6 Flash with limited Gemini 3.1 Pro access; consumer chat, Workspace tie-in | Daily message allotment that resets | No |
| Google AI Studio | Prototyping playground, daily-reset API quota | Rate limits; data handling depends on unpaid/paid status, billing, Workspace account, and region | No |
| Perplexity (free) | Unlimited basic searches with citations | 5 Pro searches per day | No |
| DeepSeek (chat) | V3 reasoning model, no signup required | No message cap on the chat site | No |
The picks, tool by tool
Claude free is the one to open first if you do real work. Claude Sonnet 5 is a capable model, not a stripped consumer toy: Anthropic reports 89.4 on SWE-bench Verified for Claude Sonnet 5, and OpenAI reports 79.8 for GPT-5.6 Luna. The free plan keeps web search, file uploads, and code execution, and the usage cap resets on its own. Go with Claude if you write, code, or reason through documents; of the two free defaults, it has the higher provider-published scores.
ChatGPT free is the most familiar door, and the one most people already have an account for. Since August 6, 2026, Free and Go accounts default to GPT-5.6 Luna, the entry tier of the GPT-5.6 family (Plus and Pro get GPT-5.6 Sol), and it handles file uploads, image generation, and voice without a card. The image side is powered by GPT Image 2 — for what it can do with text-in-images and complex layouts specifically, the ChatGPT Images 2.0 review covers the detail. The old catch is gone: text chat is unlimited, subject to OpenAI's abuse guardrails, and the limits that remain sit on file uploads, images, and other tools. That makes it the free pick when a message counter is what you're trying to avoid. For anything that needs to hold a long thread of writing, the trade-offs are worth reading in the guide to the best AI for writing long-form, where window length matters more than raw model size.
The free tiers don't gatekeep with a paywall. They gatekeep with a clock.
Microsoft Copilot at copilot.microsoft.com is the runner-up for a specific job: search-grounded answers and images. It rides Bing for live web access, and Microsoft Support says its Smart mode is powered by GPT-5. It gives you unlimited searches and includes DALL-E 3 image generation, all free and card-free. There's no published message cap, though heavy use can throttle. Skip it as your main writing model, but keep it bookmarked for current-events questions and quick image ideas.
DeepSeek chat at chat.deepseek.com is the outlier that breaks the message-cap rule entirely. The chat site runs the V3 reasoning model with no message limit and no signup required, which makes it the pick when you have a long batch of questions and don't want to create an account. Treat its data policy as unknown until you read its privacy page, and keep sensitive material out.
Google Gemini spans products with different terms. The Gemini app has consumer limits and optional Workspace connections. Google AI Studio is a separate prototyping surface with per-minute and daily quotas. Under Google's current API terms, unpaid-service content may be used to improve products and may be reviewed, while active-billing and eligible Workspace accounts receive paid-service handling; the EEA, Switzerland, and UK have additional treatment. Verify the account, billing project, region, and current terms before choosing it for sensitive work.
Perplexity free is the search-first pick. You get unlimited basic searches with citations and 5 "Pro" searches a day before that feature locks. It's the cleanest free option when you mostly want sourced answers rather than open-ended chat. Students leaning on it for coursework should pair it with the cautions in the guide for students who want to learn, since citation tools still need checking.
How to choose without overthinking it
Pick by the limit you'll hit first, then check data handling for the exact product and account. Claude, ChatGPT, Gemini, AI Studio, and business workspaces do not share one training default, and controls such as Temporary or Incognito chats can change the result. Free access also remains subject to changing quotas and regional availability.
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