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Which AI should I use?

All seven of the big AI assistants have a free version. Here's what each one costs if you want more, where you can use it, and what it's known for. Prices come from each company's own pricing page.

Facts checked September 24, 2026

Looking for more tools?

This page compares the seven big assistants. The AI Systems directory lists many more, with official links only.

Prices at a glance

U.S. monthly prices from each company's official page, checked September 24, 2026. Annual billing is often cheaper.

AssistantCompanyFree?Paid plans (per month)
ChatGPTOpenAIYesGo $8 · Plus $20 · Pro from $100 (as of Oct 18, 2026)1
ClaudeAnthropicYesPro $20 ($17 billed yearly) · Max from $100 (as of Oct 18, 2026)2
GeminiGoogleYesAI Plus $4.99 · AI Pro $19.99 · AI Ultra from $99.99 (as of Sep 24, 2026)3
CopilotMicrosoftYes, limitedBundled in Microsoft 365: Personal $9.99 · Family $12.99 · Premium $19.99 · Pro $99.99 (as of Sep 24, 2026)4
PerplexityPerplexityYesPro $20 · Max $200 (as of Sep 24, 2026)5
GrokxAIYesPlus $8 · Premium $30 · Super $100 · Ultra $200 (as of Oct 18, 2026)6
Meta AIMetaYesMeta One Core $7.99 · Premium $19.99 (optional extras) (as of Sep 24, 2026)7

What each one is

ChatGPT

OpenAI

The one most people have tried. Apps for Windows, Mac, iPhone and Android, plus the web.8 It can search the web for current information and show its sources.9 Paid plans raise your usage limits, and Pro offers five or twenty times the Plus limits.1

Claude

Anthropic

Works on the web, iOS, Android and desktop on every plan, including free. Anthropic lists web search, creating files, running code, memory across conversations and connecting your apps among its features.2 The free plan doesn't include Anthropic's top Opus model; Pro and Max do.2

Gemini

Google

Google's assistant, free with a Google account. The free plan includes Deep Research, Gemini Live voice chat, Canvas and image creation.3 There are phone apps and a web version, a Mac app since April 2026 and a Windows app since September 2026.10 Google says more than 1 billion people use the Gemini app each month.11

Microsoft Copilot

Microsoft

A limited free version is available "subject to available capacity." The paid versions come bundled with Microsoft 365 and work inside Word, Excel, PowerPoint, Outlook and Teams. Microsoft says it lets you switch between OpenAI and Anthropic models.4

Perplexity

Perplexity

Built as an answer engine. Perplexity says every answer "links to numbered citations," so you can check where information came from.12 Paid plans let you pick among models from OpenAI, Google, Anthropic and others.5

Grok

xAI

Made by xAI and available on the web, in phone apps and inside X (formerly Twitter).13 xAI promotes real-time search of the web and X, image and video generation, and voice mode.13 Paid plans include the latest Grok models; xAI’s docs currently name Grok 4.7 as its most capable.6

Meta AI

Meta

Available in Meta's apps, its own Meta AI app, on the web and in Meta's AI glasses.14 Since April 2026 it runs on Meta's Muse Spark model.15 Meta says it "will still be free for everyday use"; the new Meta One plans add more image and video creation.7

About DeepSeek

DeepSeek is a popular free chatbot from Hangzhou DeepSeek Artificial Intelligence Co., Ltd. in China. Its own privacy policy says it collects, processes and stores your personal data "in People's Republic of China" and may use it to train its models.16

hitechmike's take

Don't use DeepSeek's app or website for anything personal or work-related. With the data stored in China, U.S. users have little say over how it's used.

Which one for which job

hitechmike's take

They're all good general-purpose assistants now. The free version of any of them will answer everyday questions well. Pick based on where you already live:

  • You want sources you can click: Perplexity, or ChatGPT and Gemini with search on.
  • You live in Gmail, Google Docs and an Android phone: Gemini.
  • Your work runs on Word, Excel and Outlook: Copilot through Microsoft 365.
  • Long documents, careful writing, or working with files: Claude.
  • A do-everything app with images and voice: ChatGPT.
  • You message on WhatsApp all day: Meta AI is already there.

Try two free ones side by side on a question you already know the answer to. You'll quickly see which one you like.

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