0.2Tool landscape (ChatGPT, Copilot, Gemini, Claude)
The essentials in 30 seconds
- Tools that converge: ChatGPT, Copilot, Gemini, Claude rely on similar technologies — what sets them apart is integration and the confidentiality framework.
- Copilot lives in Office, Gemini in Google Workspace: at work, the tool integrated into your ecosystem and approved by the company beats the standalone tool.
- The rule that prevents mistakes: company data → company-approved tool; the rest → whichever assistant you prefer.
Threaded mini-case — Amine maps his tools
Amine, project manager in Algiers, juggles several assistants without knowing which to use for what. By listing what his organisation provides and testing the same client follow-up prompt on two tools, he finds the answers are comparable — but only the company-approved tool accepts internal data. He formalises his sorting rule: professional data to the approved tool, generic drafts to his favourite.
Standalone case for this section: it returns in the lesson, the diagram, the script and the 48h challenge of section 0.2.
1. Tools that converge
ChatGPT (OpenAI), Copilot (Microsoft), Gemini (Google), Claude (Anthropic), Mistral (France)… the major assistants rely on similar technologies and converge in quality. What really sets them apart at work: integration (Copilot lives in Office, Gemini in Google Workspace), the confidentiality framework (business offering or not) and a few specialities (long-document analysis, web search, image).
2. The rule that prevents mistakes
You need to place each tool family and identify what your organisation provides (or not) — asking IT when in doubt. Then apply the selection rule: company data → company-approved tool; the rest → whichever assistant you prefer. Amine displays it above his screen: when in doubt, the question is no longer “which is the best tool?” but “may these data leave the company?”.
3. Transferable skills
Good news: the level-1 prompting skills are transferable from one assistant to another — switching tools does not send you back to zero. Rankings change every quarter anyway and gaps remain small for office uses: choosing an integrated, authorised tool rather than “the best” in absolute terms means choosing lasting efficiency.
🔎 Concrete example — 🔎 Concrete example — The sorting rule
Internal data (client, figures, HR) → company-approved tool ONLY.
Generic task (rephrasing a public text) → whichever assistant you prefer.
→ prompting skills transfer from one tool to another.Reading: Amine tests the same client follow-up on two assistants: tones differ, but the sorting rule never changes.
Lesson: when in doubt about authorisation, ask IT before entering any internal data.
Section vocabulary
- ChatGPT (OpenAI)
- The mass-market pioneer: versatile, rich ecosystem (custom GPTs), free and paid versions, business offerings.
Simple example: Amine uses it for his generic drafts with no internal data.
What it is not: the tool integrated by default with the Office suite.
Reflex: reserve internal data for a company-approved business offering.
- Microsoft Copilot
- The assistant built into Windows and Microsoft 365: its strength is access (with a business licence) to your files, emails and meetings.
Simple example: Amine prepares a report from his internal documents with it, within the approved framework.
What it is not: a simple web chatbot with no link to work files.
Reflex: use it first if your organisation lives in the Microsoft ecosystem.
- Google Gemini
- The Google-side equivalent: built into Gmail, Docs and the search engine; strong on multimedia.
Simple example: Amine exploits his shared documents with it when his team works in the Google ecosystem.
What it is not: a tool reserved for mobile phones only.
Reflex: use it first if your organisation lives in the Google ecosystem.
- Claude (Anthropic)
- Known for long documents, nuanced writing and code; also used in business via API.
Simple example: Amine entrusts it with synthesising a long report to extract its structure.
What it is not: a search engine that cites its sources in every sentence.
Reflex: try it on long documents and polished rephrasing.
- “Business” offering
- A version of an assistant with contractual guarantees (no training on your data, administration): the decisive criterion at work.
Simple example: Amine checks with IT that his professional tool is covered by this framework before entering an internal figure.
What it is not: a simply faster version of the same mass-market tool.
Reflex: ask IT for the exact status of each tool before professional use.
In practice — In practice — Map YOUR situation
- List what is available: does your organisation provide Copilot 365, Gemini Workspace, ChatGPT Enterprise, an internal tool? (Ask IT if in doubt.)
- Test the same prompt on 2 different assistants: “Write a polite client follow-up for a 30-day overdue invoice” — compare tone and structure.
- Note the interface differences: conversation history, attachments, web search.
- Formalise your personal rule: which tool for professional data / for the rest — you will test it against level 5.
Ready-to-say script — asking IT which tool to use
“I use an assistant for my drafts and I want to do things properly: which tool does the company approve for internal data, and what should I avoid entering in it? I will stick to it for all my professional uses.”
Say it before any regular professional use; note the answer and display it as your personal sorting rule.
Copy-paste template — my tool sorting rule
COMPANY-APPROVED TOOL(S) (ask IT): _______________
INTERNAL DATA → ONLY: _______________
GENERIC TASKS → MY FAVOURITE: _______________
WHEN IN DOUBT: I ask IT before entering anything.Microsoft ecosystem
Organisation on Office: Copilot approved first for internal files, emails and meetings — the rest to the favourite assistant.
Google ecosystem
Organisation on Google Workspace: Gemini approved first for internal Gmail and Docs — the rest to the favourite assistant.
No approved tool
Amine has no approved tool yet in Algiers: no internal data in mass-market assistants — generic drafts only, pending IT guidance.
Mixed use
Two shortcuts side by side: the approved tool for anything touching the company, the favourite for learning and exploring — never the reverse.
✓ Best practices
- Choose first by “company-approved” status at work.
- Prefer the tool integrated with your ecosystem (Office, Google).
- Ask IT when in doubt about authorisation.
✗ Common pitfalls
- Choosing a tool for its popularity rather than its framework.
- Entering company data into a non-approved tool.
- Seeking “the best” in absolute terms (gaps are small).
Key takeaways
- The major assistants converge in quality: integration and the confidentiality framework make the difference.
- Copilot = Microsoft ecosystem; Gemini = Google ecosystem; ChatGPT/Claude = versatile.
- At work, the first criterion is not performance but the “company-approved” status of the tool.
- Prompting skills (level 1) are transferable from one assistant to another.
48h challenge — apply tomorrow
List your available tools, ask IT what is approved, test the same client follow-up on two assistants and write your sorting rule: professional data to the approved tool, the rest to your favourite.
- I can place each tool family and its ecosystem.
- I asked IT what is approved in my organisation.
- My professional/free sorting rule is written and applied.
Frequently asked questions
Which is “the best” assistant?
The question makes little sense in absolute terms: rankings change every quarter and gaps are small for office uses. The best is the one your organisation authorises and which integrates with your tools. At work, a “decent” but integrated and approved assistant beats an “excellent” but forbidden one disconnected from your files. Like Amine: test two tools for tone, then decide by framework.
Do I need a subscription to work well?
No, to start: a free account is enough for the whole start of this guide, levels 0 to 3 included. First test the free version intensively to calibrate your real need — many office uses settle for it. If your organisation provides an approved business tool, it takes priority, whatever your personal setup.
What is criterion No. 1 for choosing an assistant AT WORK?