AI tools are everywhere in 2026. Whether you need help writing, coding, researching, studying, or simply getting things done faster, there are plenty of options to choose from.
The problem is that paying for several AI subscriptions can get expensive quickly.
So which one is actually worth it? This guide compares ChatGPT, Gemini, Claude, Perplexity, and Grok, along with the more affordable subscription options listed on U7BUY.
*Prices are based on the supplied U7BUY listings and may vary depending on the plan, duration, region, and availability.
1. ChatGPT: Best All-Around AI Assistant
ChatGPT is probably the easiest choice if you want one AI tool that can handle a little bit of everything.
You can use it for writing, brainstorming, coding, studying, research, file analysis, and everyday questions.
Best for: Students, writers, developers, marketers, researchers, and general users.
| SKU | Price | Duration |
| Plus (Private) | $12.84–$42.80 | 1 month |
| Go (Private) | $6.42–$51.36 | 1/2/12 months |
| Plus (Shared) | $5.62–$5.89 | 1 month |
Our take: If you only want one general-purpose AI assistant, ChatGPT is a sensible place to start.
2. Gemini: Best for Google Users
Gemini is another strong general-purpose AI assistant, especially if you already use Google’s ecosystem.
It can help with research, writing, brainstorming, productivity, and multimodal tasks.
Best for: Google users, students, researchers, content creators, and professionals.
| SKU | Price | Duration |
| Pro (Private) | $3.11–$21.39 | 1/3/6/12 months |
| Ultra (Private) | $53.50–$73.82 | 1 month |
| Plus (Private) | $7.07–$27.82 | 1/3/6/12 months |
| Pro (Shared) | $2.68 | 1 month |
Our take: Gemini makes the most sense if Google’s services are already part of your daily workflow.
3. Claude: Best for Writing and Coding
Claude is particularly popular with people who work with long-form writing, code, documents, and complex instructions.
Best for: Writers, developers, researchers, marketers, and professionals working with large amounts of text.
| SKU | Price | Duration |
| Individual Pro (Private) | $22.47–$813.20 | 1/3/6/12 months |
| Individual Pro (Shared) | $9.63–$26.75 | 1 month |
| Individual Max 5x (Private) | $155.15–$417.30 | 1/3 months |
| Individual Max 5x (Shared) | $31.03–$48.15 | 1 month |
| Team Premium seat | $105.93–$119.84 | 1/3 months |
| Team Standard seat | $53.49 | 1 month |
Our take: If writing and coding are your main priorities, Claude is one of the strongest alternatives to consider.
4. Perplexity: Best for Research
Perplexity takes a more search-focused approach to AI.
It is useful when you want to investigate a topic, find information, compare sources, or summarize what you find online.
Best for: Students, researchers, journalists, marketers, writers, and anyone who regularly researches online.
| SKU | Price | Duration |
| Personal Perplexity Pro (Private) | $19.26–$398.04 | 1/3/6/12 months |
Our take: If research is the main reason you use AI, Perplexity may be a better fit than a traditional chatbot.
5. Grok: Best for X and Current Topics
Grok, developed by xAI, combines AI chat with web and X search, reasoning, file analysis, and image and video creation.
Its connection to X makes it particularly interesting for people who follow current discussions and trends on the platform.
Best for: X users, content creators, casual AI users, and people interested in current topics and multimodal AI.
| SKU | Price | Duration |
| SuperGrok Private Full Access | $24.98–$202.23 | 1/3 months |
| SuperGrok Share Account | $17.12 | 1 month |
Our take: Grok is worth considering if X, current information, and multimodal features matter to you.
What Is the Cheapest AI Tool?
ChatGPT vs Gemini vs Claude vs Perplexity vs Grok:
Based on the U7BUY listings in this comparison, the lowest starting prices are:
| AI Tool | Best For | U7BUY Starting Price* | Access |
| ChatGPT | General AI, writing, coding | $5.62 | Private / Shared |
| Gemini | Google ecosystem, productivity | $2.68 | Private / Shared |
| Claude | Writing, coding, long documents | $9.63 | Private / Shared / Team |
| Perplexity AI | Search and research | $19.26 | Private |
| Grok | X, current topics, multimodal AI | $17.12 | Private / Shared |
*Price isn’t everything, though. Shared accounts can have different privacy, usage, simultaneous-login, or account-management conditions compared with private accounts.
Which One Should You Choose?
There is no universal winner. The right choice depends on what you actually use AI for.
Private vs Shared AI Accounts
Before buying, check whether the product is private or shared.
Private options are intended for individual use, while shared options can cost less but may have restrictions involving usage, privacy, simultaneous access, or account settings.
U7BUY offers both types for products including ChatGPT, Gemini, Claude, and Grok.
If you plan to use AI for work or confidential information, a private option may be the better choice. Always check the individual product description before ordering.
Is U7BUY Legit and Safe to Buy From?
U7BUY has been operating for more than 10 years and says it has served millions of customers worldwide. According to the company information supplied for this article, it has completed more than 12 million orders and has more than 5 million customers.
U7BUY also provides 24/7 customer support and states that eligible undelivered purchases are covered by a 100% refund guarantee. The supplied company information lists a 4.7/5.0 Trustpilot rating from more than 47,000 reviews.
As with any digital marketplace, buyers should still check the specific product’s access type, delivery method, region requirements, usage limits, and refund conditions before purchasing.
Where to Find Affordable AI Subscriptions
Paying separately for several AI services can add up quickly. U7BUY lists subscription options for ChatGPT, Gemini, Claude, Perplexity AI, and Grok, with different prices, durations, and access types.
Before ordering, check the subscription duration, access type, region requirements, delivery method, and usage limitations.
Explore AI subscription options on U7BUY →
Final Verdict
If you want one versatile AI assistant, ChatGPT is the easiest place to start. Gemini is a natural fit for Google users, Claude is strong for writing and coding, Perplexity is built around research, and Grok offers an interesting option for people who use X.
You don’t need every AI subscription. Start with the one that matches your main use case, then upgrade or try another service if you actually need it.
Frequently Asked Questions
Is U7BUY legit?
U7BUY is an established digital marketplace that has been operating for more than 10 years. The company says it serves millions of customers and provides 24/7 support. Product-specific terms still apply.
What can I buy on U7BUY?
U7BUY offers a wide range of gaming products, streaming subscriptions, and AI-related products, including ChatGPT, Gemini, Claude, Perplexity AI, and Grok.
Does U7BUY offer refunds?
U7BUY states that eligible undelivered purchases are covered by a 100% refund guarantee. Check the specific product terms for eligibility.
