Which AI tool should I use at work?

There is no single best tool, and rankings change quickly. A more reliable way to choose is to start from what you need done and what you are permitted to use.

Step 1: Check what your employer allows

Many companies approve specific tools and prohibit others for confidential data. Using an unapproved tool with client material can breach policy or contracts. Ask IT or check the policy first. See whether it is safe to put company data in ChatGPT.

Step 2: Match the task to the type of tool

General chat assistants (Claude, ChatGPT). Best for writing, editing, summarizing, brainstorming and analysis of documents you paste or upload. Start here if you have no other constraints. Our comparisons: Claude vs ChatGPT and ChatGPT Plus vs Claude Pro.

Copilots inside your apps (Microsoft Copilot). Best when your work is inside Word, Excel, PowerPoint, Outlook and Teams and your company licenses it. Microsoft says Microsoft Copilot only surfaces organizational data to which individual users have at least view permissions. See what Microsoft Copilot is.

Search-style tools (Perplexity). Suited to research questions where you want an answer built from web sources you can open and check. The Perplexity Agent API docs describe web-grounded answers with inline citations in a single call. The Columbia Journalism Review Tow Center test found that Perplexity answered 37 percent of the queries incorrectly. Open the sources. See what Perplexity is good for.

Agent tools (Claude Code, Codex, OpenClaw). These do multi-step work, such as reading a folder, transforming files and running a routine, rather than only replying in a chat. The Anthropic Claude Code docs describe Claude Code as an agentic coding tool that reads your codebase, edits files, runs commands, and integrates with your development tools. The OpenClaw README says OpenClaw is an open-source AI assistant that runs on your own computer. They are the tools to use when you want to automate something. See what Claude Code is and what AI agents are.

Step 3: Consider cost

Prices and plan names change often, so check the provider’s pricing page. The Claude Help Center says Pro, Max, and Ultra plans give you Claude on the web, desktop, and mobile apps and Claude Code in your terminal with one unified subscription. The OpenAI Codex pricing page lists Plus at $20 per month. These were checked in November 2026. Microsoft sells Copilot as add-ons or bundles to business plans. The Microsoft Copilot pricing page lists the Copilot Business add-on at $25.20 per user per month. Microsoft Learn describes Copilot Chat (Basic) as the standalone baseline experience included with eligible Microsoft 365 licenses. Compare current details before paying, and ask whether your employer will cover it.

Step 4: Try it on three of your own tasks

Run the same three real tasks in two tools and compare results, speed and how much fixing you had to do. Your own work is a better test than any review.

A sensible default

If you have no strong constraint: use the assistant your company approves for everyday writing and summarizing, and add an agent tool once you have recurring tasks worth automating.

Do not chase every release

New models and features arrive monthly. A tool you know well beats a slightly better one you have not learned. In Learn AI Fast, the first morning covers what Claude Code, Codex, OpenClaw, Copilot and Perplexity each do and where each is strongest, so you can pick with hands-on experience.

Sources

• Microsoft Learn, Data, Privacy, and Security for Microsoft Copilot: “Microsoft Copilot only surfaces organizational data to which individual users have at least view permissions”
• Perplexity, Agent API quickstart: “grounded in real-time web search, with inline citations in a single call”
• Columbia Journalism Review, Tow Center, AI search engines are bad at citing news: “with Perplexity answering 37 percent of the queries incorrectly”
• Anthropic, Claude Code overview: “Claude Code is an agentic coding tool that reads your codebase, edits files, runs commands, and integrates with your development tools”
• GitHub, openclaw/openclaw README: “OpenClaw is an open-source AI assistant that runs on your own computer”
• Claude Help Center, Use Claude Code with your Pro, Max, or Ultra plan: “you now have access to both Claude on the web, desktop, and mobile apps and Claude Code in your terminal with one unified subscription”
• OpenAI, Codex pricing: “Power a few focused coding sessions each week. $20 /month”
• Microsoft, Microsoft Copilot plans and pricing: “Microsoft 365 Copilot Business (add-on) AI built for work to help drive productivity, clarity and impact across your existing Microsoft 365 experience $25.20 user/month”
• Microsoft Learn, What is Microsoft Copilot?: “Copilot Chat (Basic) is the standalone baseline experience included with eligible Microsoft 365 licenses”