By Asmaa Gad | 14 min read
The most common question I get from procurement professionals: “Which AI tool should I use?” And the honest answer is: it depends on what you are trying to do. ChatGPT, Claude, Copilot, Perplexity, and Gemini each have real strengths and real weaknesses for procurement work. None of them is the best at everything.
I first compared all five on procurement tasks in early 2026: spend analysis, contract review, supplier research, RFP drafting, and negotiation prep. The tools have changed a lot since, so read this as a guide to strengths, and check current features before you choose.
The Quick Comparison: Which Tool for Which Task
| Procurement Task | ChatGPT | Claude | Copilot | Perplexity | Gemini |
|---|---|---|---|---|---|
| Spend Data Analysis | Best | Strong | Strong | Limited | Strong |
| Contract Review | Strong | Best | Strong | Limited | Strong |
| Supplier Research | Good | Good | Good | Best | Strong |
| RFP / RFQ Drafting | Best | Best | Good | Limited | Good |
| Negotiation Prep | Strong | Best | Good | Good | Good |
| Market Intelligence | Good | Good | Strong | Best | Strong |
| Excel Integration | Limited | Limited | Best | None | Good |
The Detailed Breakdown
ChatGPT (current models include GPT-6.1 Sol on Plus and above)
Where it shines: Data analysis with file uploads. Upload your spend file and ChatGPT will write and run Python code to analyse it. It creates charts, identifies patterns, and handles messy data better than any other tool. Also excellent for drafting RFPs and stakeholder communications.
Where it struggles: Can hallucinate facts when it does not know something, especially with market data. For research, use deep research and check every source it cites.
Best for: Spend analysis, data-heavy tasks, RFP drafting, creating Python scripts for procurement automation.
Claude (Anthropic)
Where it shines: Long document analysis. Claude handles long documents well, so it can work through entire contracts, policy documents, or multi-page RFP responses in one go. Its reasoning is more nuanced and it is less likely to hallucinate than GPT on complex analytical tasks. Excellent at identifying contract risks and inconsistencies.
Where to be careful: as with every assistant, check its figures against your source data. Claude now offers Research, Projects, Artifacts and Claude Code, so many earlier gaps have closed.
Best for: Contract review, negotiation prep, policy analysis, long-document processing, nuanced strategic analysis.
Microsoft Copilot
Where it shines: If your team lives in Microsoft 365, Copilot is unbeatable for in-context assistance. It works directly in Excel (formula generation, data cleaning, analysis), Word (document drafting), PowerPoint (presentation creation), and Outlook (email drafting). The embedded experience eliminates the copy-paste friction other tools require.
Where it struggles: The standalone Copilot chat is weaker than ChatGPT or Claude for complex analytical tasks. Microsoft 365 Copilot is a paid add-on (in the UK, Copilot Business is listed at GBP 16.10 per user per month on a yearly plan, ex VAT); Copilot Chat is included with eligible plans. It works best when you are already in the Microsoft ecosystem.
Best for: Teams using Microsoft 365 daily, Excel-heavy workflows, creating presentations from data, email drafting at scale.
Perplexity AI
Where it shines: Real-time web research with cited sources. Deep research in ChatGPT, Claude Research and Gemini Deep Research now do similar sourced research, so compare them before you add another tool. Every claim links to a source, which is critical when you need to present findings to stakeholders.
Where it struggles: Not built for data file analysis. Cannot process your spend data or contracts. Limited creative writing and drafting capabilities compared to ChatGPT or Claude.
Best for: Supplier research, market intelligence, commodity tracking, regulatory research, competitive analysis with sourced data.
Google Gemini
Where it shines: Google Workspace integration and multimodal capabilities. Strong for teams using Google Sheets, Docs, and Slides. Can analyse images (e.g., photos of physical inventory, warehouse layouts). Gemini Notebook (the product formerly called NotebookLM) is excellent for working across many documents and creating briefings and study guides from them.
Where it struggles: Still catching up to ChatGPT and Claude on complex reasoning tasks. Google’s model updates can change behaviour unpredictably. Less reliable for very nuanced contract analysis.
Best for: Google Workspace teams, multimodal analysis, Gemini Notebook for research synthesis, teams wanting tight integration with existing Google tools.
My Honest Recommendation: Build a Toolkit, Not a Dependency
The Procurement Professional’s AI Stack
Primary tool for analysis: ChatGPT Plus (USD 20 a month) or ChatGPT Business for teams. Data analysis alone is worth it for spend analysis, data cleaning, and creating automated reports.
For research: use deep research in the assistant you already pay for. It cites its sources, but you still check every source before you present findings.
For long documents: Claude Pro (USD 20 a month, or USD 17 a month billed annually). When you need to process 50-page contracts or policy documents in one shot.
If you are in Microsoft 365: Add Copilot to your existing licence. The Excel and Outlook integration alone saves hours per week for heavy spreadsheet users.
You do not need all five. Start with one. Get comfortable. Add another when you hit its limits. The professionals getting the most value from AI are the ones who know which tool to reach for based on the specific task at hand.
The Best Tool Is the One You Actually Use
Stop comparing features and start using one tool consistently for your daily work. A procurement professional who masters ChatGPT prompting will outperform someone who dabbles in five tools without mastering any. Pick one, build your prompts, create your workflows, and add tools only when you hit clear limitations.
Want Tool-Specific Guides?
We have dedicated 2027 books for each tool: ChatGPT for Procurement, Copilot for Procurement, Claude for Procurement and Gemini for Procurement. Each one is built specifically for procurement and supply chain use cases.
Asmaa Gad is the founder of SupplyChain AI Pro, helping procurement and supply chain professionals master AI tools for real work.