The short version
This page is informational. We don't earn affiliate commissions from any of the five big AI platforms listed here — they don't run consumer affiliate programs. Full disclosure.
- ChatGPT — the all-rounder. Easiest starting point for owners who've never used AI. Free plan handles most everyday work.
- Claude — best for writing. Emails, proposals, marketing copy, longer documents. Reads as more careful and less salesy out of the box.
- Gemini — Google's pick. If you live in Gmail, Google Docs, and Google Calendar, Gemini is already there.
- Perplexity — built for research. Every answer comes with the sources it pulled from, so you can verify before you trust.
- Microsoft Copilot — built into Word, Excel, Outlook, and Teams. If your business runs on Microsoft 365, Copilot is the easy add.
See the comparison table
What do small-business owners actually ask about the big AI platforms?
The questions owners ask before they pick a platform, answered first.
Which AI platform is best for my small business?
There isn't one right answer. ChatGPT is the easiest starting point because most people have heard of it and the free plan handles about 80 percent of small-business use. Claude is the pick if you write a lot (emails, proposals, marketing copy). Gemini fits if you live in Gmail, Google Docs, and Google Calendar all day. Perplexity is the one if you need to look things up with sources you can verify. Copilot makes sense if your business runs on Microsoft 365 (Word, Excel, Outlook). Most owners end up using one or two, not all five.
What's the difference between ChatGPT, Claude, Gemini, Perplexity, and Copilot?
They all answer questions in plain English. The differences come down to who built them and what they're tuned for. ChatGPT (from OpenAI) is the all-rounder. Claude (from Anthropic) is tuned for writing and longer documents. Gemini (from Google) is woven into Google's apps. Perplexity is built around search — it shows the sources behind every answer. Copilot (from Microsoft) is woven into Word, Excel, Outlook, and Teams. Under the hood, all five use large language models — the kind of AI that reads and writes text.
Are these AI platforms really free?
Yes, with limits. Every one of these has a free plan that works for the typical small-business owner. The paid plans (usually $20 a month) get you faster responses, higher daily message limits, and access to the more capable model. For a one-person operation, the free plan is often enough to start. If you start using it every day for client work, paying for one of them is usually worth it.
What about my business data — is it safe?
It depends on which plan and which platform. The free consumer plans on most of these may use your conversations to train future models unless you turn that off in settings. The paid Team and Enterprise plans (ChatGPT Team, Claude Team, Gemini for Workspace, Copilot for Microsoft 365) don't train on your data by default. If you're going to paste customer names, financial details, or anything sensitive, use a paid business plan and read the privacy settings. Or strip the names out before pasting.
Do these AI platforms replace the tools listed on this site?
No. Think of it like this: ChatGPT, Claude, Gemini, Perplexity, and Copilot are the engines. The tools listed elsewhere on this site (Quo for phones, Jobber for scheduling, QuoteIQ for estimates, Housecall Pro for dispatch) are specific applications built for trade businesses and main-street shops. The big AI platforms help you write a marketing email or look something up. The vertical tools handle the day-to-day work of running your shop. Most small businesses end up using both. More on how they fit together below.
Can I use these for client work and put it on the bill?
Yes, and most owners already do without thinking about it. Drafting a proposal with Claude, writing a service-call follow-up email with ChatGPT, looking up a code requirement with Perplexity — that's the same as using a calculator or spell-check. A few practical rules: don't paste anything regulated (HIPAA records, attorney-client material, financial advisory recommendations) into a free consumer plan, always read what the AI wrote before sending it, and remember that the AI can be confidently wrong. Use it as a first draft, not a final word.
Which one should I try first if I've never used any of them?
Start with ChatGPT's free plan. It's the most familiar, the help articles are everywhere, and the free version handles the typical "write me an email" or "summarize this" work most owners need. Spend two weeks using it for one specific task. Once you know what you'd use AI for, then you can decide if a different platform fits better.
Which big AI platform fits which small-business job?
Pricing reflects published consumer pricing as of May 2026. Verify current pricing directly with each vendor before purchase.
| Platform | Best for SMB use | Pricing | Strengths | Weaknesses |
|---|---|---|---|---|
| ChatGPT by OpenAI |
General-purpose: drafting emails, summarizing, brainstorming, writing job descriptions | Free; Plus $20/mo; Team $25/user/mo | Easiest learning curve, huge user base, voice mode on mobile is genuinely useful | Free plan throttles during peak hours; can sound generic without coaching |
| Claude by Anthropic |
Writing-heavy work: proposals, marketing copy, longer emails, reading and summarizing long documents | Free; Pro $20/mo; Team $30/user/mo | Writing sounds more careful and less salesy; handles long documents well; strong at reasoning through complex requests | Smaller user base means fewer how-to videos; mobile app newer than ChatGPT's |
| Gemini by Google |
Owners who run on Gmail, Google Docs, Google Calendar, Google Sheets | Free; Advanced $20/mo; Workspace add-on from $20/user/mo | Already inside Google's apps; can read your email and docs (with permission); strong on quick Google search lookups | Quality varies between the free model and the paid one; integrations are still uneven across the Google suite |
| Perplexity by Perplexity |
Looking things up: code requirements, vendor comparisons, market research, anything where you need a source | Free; Pro $20/mo | Shows the sources behind every answer; you can click through and verify; faster than digging through Google | Not as good for pure writing tasks; the free plan limits how much you can run through it daily |
| Microsoft Copilot by Microsoft |
Businesses that run on Microsoft 365: Word, Excel, Outlook, Teams | Free; Pro $20/mo; Microsoft 365 Copilot $30/user/mo | Built into the Office apps you already use; can pull from your Outlook calendar and SharePoint; familiar to anyone who's used Word | The free version is more limited than its competitors; the $30 business plan requires a Microsoft 365 subscription on top |
Pricing as of May 2026. All five offer free plans that handle most small-business everyday use. The $20/month paid plans are the typical step up for owners using AI daily for client work.
How do the big AI platforms fit with the tools on this site?
Think of the big AI platforms as the engines. The tools listed elsewhere on this site are specific applications built for one job, in one trade or vertical.
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01
The big AI platforms are the engines
ChatGPT, Claude, Gemini, Perplexity, and Copilot are large language models — the underlying AI that reads and writes text. They're general-purpose. You ask, they answer. Write me an email. Summarize this document. Compare these two vendors. They're not built for any one industry.
- Write a follow-up email after a service call
- Summarize a 12-page vendor contract before you read it
- Brainstorm a Facebook post for the spring promotion
- Look up a building code requirement and get a cited source
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02
The tools on this site are built for the work of running a small business
The tools listed on the trade and main-street pages here — Quo for phones, Jobber and Housecall Pro for scheduling, QuoteIQ for photo-based estimates, Podium for reviews — are purpose-built applications. They do one job for one type of business and handle the messy plumbing (scheduling, billing, dispatching, integrations) that a general AI platform doesn't.
- Answer the phone at 9 PM when a homeowner has a burst pipe
- Route the next service call to the closest available tech
- Generate an itemized estimate from a photo of the job
- Send review requests automatically after every completed job
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03
Many vertical tools are built on top of the big platforms
Most of the AI features inside the vertical tools (Jobber's AI quoting, Housecall Pro's customer summaries, Podium's review-response drafts) are powered by one of the big language models under the hood. The vertical tool wraps the platform with industry-specific workflow, integrations with your scheduling and billing, and a friendly interface for someone who doesn't want to think about prompts.
You don't have to pick one or the other. Most small businesses use both — the big platforms for everyday writing and research, the vertical tools for the work of running the business.
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04
Where to start
If you've never used AI before, start with a free big platform (ChatGPT is the easiest). Spend two weeks getting comfortable with it for one task — drafting customer emails, summarizing meetings, writing social posts. Then look at the vertical tools for your specific business once you've seen what AI can do.
- Trade business owner? See tools for your trade
- Regulated pro (attorney, doctor, financial advisor, etc.)? See the professional pages
- Main-street shop (restaurant, retail, salon)? See tools for your vertical
Sources
- Vendor published consumer pricing pages reviewed May 2026 — openai.com, anthropic.com, gemini.google.com, perplexity.ai, microsoft.com/copilot
- Data-use and training policies from each vendor's published privacy documentation; verify current terms with each vendor before pasting sensitive data
- Cross-referenced with the tools on this site at tools.json for the vertical-tool examples
Last reviewed: 2026-05-29. The Agentic Index does not provide legal, compliance, or business advice. Verify all claims, pricing, and vendor terms directly with each vendor. We are not affiliated with OpenAI, Anthropic, Google, Perplexity, or Microsoft.