Quick answer: SAP Joule, Microsoft 365 Copilot, and ChatGPT are built for different data. According to SAP, Joule is grounded in SAP business data and respects each user's SAP roles. Microsoft 365 Copilot works with Microsoft 365 data and can reach SAP through connectors or the documented Joule integration. ChatGPT is a general assistant that connects to approved apps. For live SAP tasks, Joule is the native fit; for email and documents, Copilot; for general drafting, ChatGPT.
Marcus runs the SAP team at a mid-sized manufacturer. (Marcus is a fictional example.) His company already pays for Microsoft 365 Copilot, several staff use ChatGPT, and SAP has just offered a Joule rollout.
His CFO asks one question: "Why do we need three AI assistants?" Marcus decides to stop guessing and test all three on the same five SAP tasks.
SAP Joule vs Copilot vs ChatGPT: What Is the Real Difference?
The real difference is the data each assistant is designed to use and the permissions it works under.
None of the three is "better" in general. The useful question is which one fits a given SAP task, and how they work together.
Sources for this table follow in the next three sections.
How SAP Joule Handles SAP Data
Joule works inside the SAP landscape and uses the user's own SAP permissions.
The SAP Architecture Center states that Joule respects role-based access, so "a user cannot access information or adjust business processes they couldn't do directly in the SAP cloud application without using Joule" ( SAP Architecture Center ). Joule runs on SAP BTP, with SAP Cloud Identity Services handling authentication.
Joule can also use document grounding with a company's own knowledge, and teams can build custom skills and agents in Joule Studio. Outside SAP, it relies on integrations.
How Microsoft 365 Copilot Reaches SAP
Microsoft 365 Copilot reaches SAP in three documented ways: Copilot connectors, Copilot Studio agents, and the Joule integration.
How the Joule and Microsoft 365 Copilot integration works
Microsoft describes it as bidirectional: Copilot users ask SAP questions through @Joule, and Joule users can reach Microsoft 365 context, such as emails from a supplier. Identity flows from Microsoft Entra ID to SAP Cloud Identity Services, which maps the person to their SAP user.
Prerequisites include a Microsoft 365 Copilot license, the corresponding SAP licenses for Joule, and SAP Cloud Identity Services. Microsoft notes it supports standard scenarios, not custom-built agents. SAP Learning adds that it is opt-in and must be enabled ( SAP Learning ).
Want the one-page version? See ZaranTech's SAP Joule vs Microsoft Copilot one-pager →
How ChatGPT Fits Into SAP Work
ChatGPT is a general-purpose assistant: strong at explaining, drafting, and reasoning, and connected to the apps your workspace approves.
OpenAI documents connected apps for services such as Google Drive and Slack, and states that "app permissions do not grant an app new access" ( OpenAI Help Center ). For business plans, OpenAI states that business data "is not used to train our models by default" ( ChatGPT Enterprise ).
Two more facts give fair context. OpenAI models are available inside SAP's generative AI hub ( SAP News ). And SAP and OpenAI have partnered on a sovereign OpenAI for Germany offering for the public sector ( SAP News ).
Image pending: INFOGRAPHIC 1: Joule, Copilot, ChatGPT: What Each Is Built For] Single image (1080 x 1350 px) with three columns showing home, main data, SAP access and permissions for each assistant, using neutral, equal styling for all three. Official ZaranTech logo in the footer. Alt text: Documented comparison of SAP Joule, Microsoft 365 Copilot and ChatGPT for SAP work.
The 5 SAP Tasks We Tested
We chose five tasks that SAP consultants and key users do every week, each testing a different strength.
How We Tested: A Fair Method
Every tool got the same prompts, test data, and user permissions.
Where a tool is not designed for a task, we record "not designed for this" rather than a low score.
Side by Side: Results for All 5 Tasks
Our SAP SME fills in results below after running the method above. Tested on [SME RESULT: test date].
Task 1: Live data question
Image pending: SCREENSHOT: Task 1 in all three tools
Task 2: Start a transaction
Task 3: Process know-how
Task 4: Code explanation
Task 5: Cross-app work
Authorization check
The scorecard
What the results show: [SME RESULT: two or three sentences summarizing the pattern, written only from the recorded results]
Image pending: INFOGRAPHIC 2: Same 5 SAP Tasks, 3 AI Assistants] Single image (1080 x 1350 px) of the completed scorecard, built only from the SME's recorded results, with equal styling for all three tools. Official ZaranTech logo in the footer. Alt text: Results of SAP Joule, Microsoft 365 Copilot and ChatGPT on five SAP tasks.
Want to run these SAP tasks with Joule yourself?
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Joule or Copilot? Why It Is the Wrong Question
For most SAP customers, the realistic answer is both, each in its own place, connected where it helps.
SAP and Microsoft have documented an integration precisely because people work in both worlds. A buyer may live in Teams all day but needs live SAP data. A finance user may live in SAP but needs the supplier's last email. ChatGPT, where a company approves it, often covers general drafting, research, and learning.
Designing assistants that cross SAP and Microsoft 365? See how the SAP AI Masterclass covers Joule, agents and SAP AI Core →
How to Run This Comparison in Your Own Company
You can repeat this test in about a day with a test system and the licenses you already have.
Which SAP Joule or SAP AI Course Fits Your Role?
Start with the AI closest to the work you do today, then add one layer.
Free SAP Joule Guides and Resources From ZaranTech
ZaranTech shares free e-books, guides, and learning resources on its LinkedIn page and in the SAP Learner Community .
Follow ZaranTech and the SAP Learner Community for new free guides every week.
SAP Joule vs Copilot FAQs
What is the difference between SAP Joule and Microsoft Copilot?
Joule is SAP's assistant, grounded in SAP business data and roles. Microsoft 365 Copilot is grounded in Microsoft 365 work data such as email, files, and chats. SAP and Microsoft also document an integration that connects the two.
Can ChatGPT access my SAP system?
Not by default. OpenAI documents connected apps for services such as Google Drive and Slack. Reaching live SAP data would need an approved integration built and governed by your company.
Does Joule work inside Microsoft Teams?
Yes, through the documented Joule and Microsoft 365 Copilot integration. Users tag @Joule in Copilot or Teams, and SAP Joule processes the request with the user's mapped SAP identity.
Which AI assistant is best for SAP consultants?
It depends on the task. Joule for live SAP data and transactions, Copilot for Microsoft 365 work, and ChatGPT for general drafting and explanations under your company's AI policy.
Is it safe to paste SAP data into ChatGPT?
Only if your company's policy allows it and you use an approved business plan. OpenAI states Enterprise business data is not used for training by default, but company rules still apply.
Back to Marcus and the CFO
Marcus brings the scorecard to the CFO meeting. [SME RESULT: one sentence on what the test showed, from the recorded results.]
His recommendation is not "pick one." It is a map: Joule for SAP work, Copilot for Microsoft 365 work, the @Joule integration where the two meet, and clear rules for ChatGPT. The CFO's question changes from "Why three?" to "Who trains our people to use each one well?"
Free download: SAP AI Assistant Comparison Chart (PDF)
The documented comparison, the 5 test prompts, the scoring method, and a blank scorecard for your own test on one page. [Download the comparison chart →] [Lead form: Name · Email · WhatsApp] [Lead magnet link]
Not ready to enroll? Start with a free SAP Joule demo
See how Joule handles real SAP tasks in a live session, and ask the instructor how it works alongside Microsoft 365 Copilot in your landscape. Register with your name, email, and WhatsApp number to get the session details.
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About ZaranTech
ZaranTech offers live instructor-led, self-paced, and corporate training in SAP, Workday, AI, and enterprise technologies, with 400+ courses, 32,000+ learners trained, 350+ corporate clients and learners in 37+ countries.
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Sources
Checked on 6 Oct 2026. Product capabilities, licenses, and integrations change often; test results are from the SME test date stated above.