Copilot in Word vs NotebookLM

Copilot in Word and NotebookLM overlap on work tasks and share 3 tasks. The verdict below is calculated for each role from the tasks, the role fit and the price.

Short answer

Copilot in Word wins for 15 of 20 roles in our data. NotebookLM starts at $14/mo and Copilot in Word at $20/mo on the cheapest paid plan.

Verdict by role

Role	Better choice	Why
Accountant	Copilot in Word	covers 10 tasks relevant to this role against 6
Lawyer	NotebookLM	covers 13 tasks relevant to this role against 10; cheaper entry plan; has a free plan
HR manager	Either one	even on tasks, NotebookLM is cheaper to start
Finance manager	Copilot in Word	covers 8 tasks relevant to this role against 5
Manager	Copilot in Word	covers 9 tasks relevant to this role against 7
Marketer	Copilot in Word	covers 9 tasks relevant to this role against 7
Sales manager	Copilot in Word	covers 9 tasks relevant to this role against 7
Data analyst	Copilot in Word	covers 8 tasks relevant to this role against 5
Teacher	NotebookLM	part of the role's core toolkit; cheaper entry plan; has a free plan
Executive assistant	Copilot in Word	covers 10 tasks relevant to this role against 7
Logistics manager	Copilot in Word	covers 9 tasks relevant to this role against 7
Procurement manager	Copilot in Word	covers 8 tasks relevant to this role against 5
Secretary	Copilot in Word	covers 9 tasks relevant to this role against 7
Recruiter	NotebookLM	covers 6 tasks relevant to this role against 5; cheaper entry plan; has a free plan
HR administrator	Copilot in Word	higher total score on tasks and fit
Tax consultant	Either one	even on tasks, NotebookLM is cheaper to start
Auditor	Copilot in Word	covers 10 tasks relevant to this role against 7
Economist	Copilot in Word	covers 8 tasks relevant to this role against 5
Project manager	Copilot in Word	covers 9 tasks relevant to this role against 7
Social media manager	Copilot in Word	covers 9 tasks relevant to this role against 7

Side by side

	Copilot in Word	NotebookLM
Vendor	Microsoft	Google
Category	Documents and writing	Research and search
Free plan	No	Yes: Up to 100 notebooks, up to 50 sources per notebook, up to 50 questions a day and a few audio overviews a day; each source up to 500 thousand words
Cheapest paid plan	Included in Copilot Pro, $20/mo	Included in Workspace Business, $14/mo
Top plan	Included in Microsoft 365 Copilot, $30/mo	Included in Google AI Pro, $19.99/mo
Tasks covered	16	19

Copilot in Word: Drafts, rewrites and summaries of documents in Word, drawing on other company files.

NotebookLM: Answers only from your own documents, with citations to the exact paragraph and nothing invented from the web.

Tasks both handle

Only Copilot in Word covers

Only NotebookLM covers

Pitfalls to watch at work

Copilot in Word

Compare two versions of a contract with Word's built-in Compare and ask Copilot to explain the changes found: on its own it misses some edits
Rewriting in a different tone also changes the content: after Rewrite, check amounts, dates and party names against the original
In the business version Copilot may pull a passage from someone else's document you have access to: check the sources in the answer

NotebookLM

The model answers only from uploaded sources: if the notebook holds an old version of a law, the answer follows the old version and still sounds confident
Keep documents with personal data and trade secrets out of notebooks in a personal account: use NotebookLM as part of Workspace for them
Scanned PDFs without a text layer read poorly: run them through OCR first

FAQ

Is Copilot in Word or NotebookLM better for work?

In our data Copilot in Word is the better choice for 15 of 20 roles. The table above shows the reason for each role.

Which is cheaper, Copilot in Word or NotebookLM?

NotebookLM starts at $14/mo and Copilot in Word at $20/mo on the cheapest paid plan.

Do Copilot in Word and NotebookLM have free plans?

Copilot in Word: No. NotebookLM: Yes. Up to 100 notebooks, up to 50 sources per notebook, up to 50 questions a day and a few audio overviews a day; each source up to 500 thousand words.

Compare Copilot in Word with

Compare NotebookLM with

Alternatives to Copilot in Word · Alternatives to NotebookLM · Copilot in Word pricing · NotebookLM pricing