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Choosing the Right AI Tool for Your Business

Honest comparison of the major AI suites: Microsoft 365 Copilot, ChatGPT, Claude, Gemini, Perplexity, and Ollama. What each actually wins at, where they fall short, and how to choose without vendor spin.

Last updated October 202610 min read

Quick Winners at a Glance

Microsoft 365 Copilot

Best inside Microsoft 365

Native inside Outlook, Teams, Word, Excel, PowerPoint. Pulls value directly from your existing M365 files, mail, and meetings. Easiest adoption path for Microsoft-first businesses.

Strengths

  • Native to apps staff already use
  • Pulls context from your tenant (SharePoint, Teams, mail)
  • Fastest adoption for office staff
  • Enterprise data boundary honours M365 security

Trade-offs

  • Value drops outside the Microsoft stack
  • Requires eligible M365 licensing
  • Less capable for open-ended reasoning than standalone models

Best for

Businesses running Microsoft 365 as their primary productivity stack.

ChatGPT Business / Enterprise

Best all-round standalone

Strongest general-purpose AI for most roles. Ops, sales, marketing, leadership, support. Not tied to any vendor stack.

Strengths

  • Broadest usefulness across departments
  • Strong at writing, summarising, planning, analysis
  • Custom GPTs and Projects for team workflows
  • No lock-in to a single ecosystem

Trade-offs

  • No deep native integration with one platform
  • Outputs can feel generic without good prompting
  • Requires teams to build prompting habits

Best for

Businesses wanting one flexible AI across many roles.

Claude Team / Enterprise

Best deep thinking and writing

Preferred when the output must feel smart, measured, and careful. Board papers, policy, strategy, legal-adjacent writing.

Strengths

  • Very strong long-form writing
  • Excellent at large-document analysis
  • More deliberate tone than ChatGPT
  • Class-leading for policy and governance work

Trade-offs

  • Slower than ChatGPT for quick daily tasks
  • Smaller ecosystem of integrations
  • Less of an all-rounder for general team use

Best for

Leadership, consulting, governance, and policy-heavy teams.

Google Gemini

Best inside Google Workspace

Native to Gmail, Docs, Sheets, Slides, Meet. Strongest when you are already all-in on Google.

Strengths

  • Native to Google Workspace apps
  • Tight integration with Drive, Calendar, Meet
  • Usually wrapped into Workspace pricing
  • Collaboration-heavy teams

Trade-offs

  • Standalone value outside Google is limited
  • Not compelling for Microsoft-first businesses
  • Less mature as a general-purpose assistant

Best for

Businesses standardised on Google Workspace.

Perplexity Enterprise

Best research tool

Web-backed answers with source citations. Fast fact-finding, market scans, competitor research.

Strengths

  • Source-cited answers reduce hallucination risk
  • Fast competitive scans and market research
  • Strong for presales, consulting, strategy
  • Good for due diligence

Trade-offs

  • Not a full daily productivity assistant
  • Less suited to writing or team-wide deployment
  • Specialist tool, not an all-rounder

Best for

Research-heavy teams alongside a broader AI suite.

Ollama / Local LLMs

Best for privacy and control

Run models locally. No data leaves the environment. Full control over models, prompts, and retention.

Strengths

  • Data never leaves your infrastructure
  • Full model and customisation control
  • Strong for developer and dev-secops teams
  • Good for privacy-sensitive industries

Trade-offs

  • Not a polished suite for non-technical staff
  • Requires engineering time and hardware
  • Limited to smaller open-weight models

Best for

Technical teams, privacy-sensitive workloads, or environments where cloud AI is restricted.

How to Choose

Start with where your staff already live, then layer specialists on top.

Primarily Microsoft 365?

Answer: M365 Copilot as the default. Fastest adoption, native integration.

Want one AI across roles without lock-in?

Answer: ChatGPT Business. Strongest all-rounder.

Board papers, policy, and governance matter?

Answer: Claude Team alongside your main suite.

Standardised on Google Workspace?

Answer: Gemini. Value comes from native integration.

Research-heavy roles (presales, consulting, strategy)?

Answer: Perplexity as a specialist on top of a generalist.

Cannot send data to cloud AI?

Answer: Ollama or a local hosted model. Budget for hardware and engineering.

AI Governance: The Part Most Businesses Skip

Before rolling out AI to staff, get the governance right. The rushed deployments are the ones that leak data, breach privacy obligations, or end up in front of the board.

Acceptable Use Policy

What AI tools are approved, what data can and cannot be entered, who is responsible for output accuracy.

Data classification

Never paste client PII, financial records, or confidential contracts into public AI.

Tenant-level protections

Use enterprise / team licences with data boundary, not personal accounts. Disable model training.

Human-in-the-loop

Staff are accountable for AI output. No auto-send of AI-written emails to customers without review.

Record-keeping

Know which system of record is authoritative. AI summaries are not the source of truth.

Training and champions

One champion per team. Shared prompt library. Monthly lunch-and-learn sessions.

Common Mistakes

Letting staff use personal ChatGPT accounts

No enterprise data protection. Prompts train the model. Data leakage waiting to happen.

Deploying Copilot without data hygiene

Copilot surfaces whatever SharePoint oversharing already exists. Fix permissions before rollout.

Measuring adoption, not outcomes

Usage metrics do not equal value. Measure time saved and decision quality.

No acceptable use policy

Staff do not know what is okay. Policy is the cheapest control available.

Treating AI as deterministic

Output varies. Sensitive workflows need verification. Never send AI output to customers unreviewed.

Common questions

Which AI tool is best for an Australian business running Microsoft 365?
Microsoft 365 Copilot is the best default for a business running Microsoft 365, because it works natively inside Outlook, Teams, Word, Excel and PowerPoint, pulls context from your SharePoint and mail, and honours your existing Entra ID conditional access and sensitivity labels.
Is ChatGPT safe for business use?
ChatGPT is safe for business use on the Team or Enterprise plans which do not use your prompts for training, but the free and Plus tiers may use your data for model training unless opted out, so never paste client PII, financial records or confidential contracts into a personal ChatGPT account.
What is the difference between Claude and ChatGPT for business?
Claude is stronger than ChatGPT for long-form writing, large-document analysis and policy or governance work because its tone is more deliberate and careful, while ChatGPT is the stronger all-rounder for quick daily tasks, brainstorming and cross-department use.
Can we run AI tools locally without sending data to the cloud?
Yes, tools like Ollama let you run open-weight models locally so data never leaves your infrastructure, but this requires engineering time, GPU hardware and is limited to smaller models, so it suits technical teams and privacy-sensitive industries rather than general office staff.
Do we need an AI acceptable use policy before rolling out AI tools?
Yes, an AI acceptable use policy is the cheapest control available and should cover which tools are approved, what data can and cannot be entered, who is responsible for output accuracy, and whether AI-written output needs human review before sending to customers.
How much does Microsoft 365 Copilot cost per user in Australia?
Microsoft 365 Copilot costs approximately AUD $45 per user per month on top of a qualifying Microsoft 365 licence like Business Standard, Business Premium, E3 or E5, and data stays within your Microsoft 365 tenant with enterprise data boundary protections.

Deploy AI Safely

We help Australian businesses evaluate, deploy, and govern AI tools including M365 Copilot, ChatGPT, and local models. Vendor-neutral, outcome-focused.