Are AI meeting note-takers safe for company meetings?

By Hugh Donatello, LAN Service Group · Reviewed October 20, 2026

Short answer

They can be, on a business plan with the settings chosen deliberately. Microsoft, Zoom and Google each say they do not train their AI models on your meeting content (Google: not outside your domain without permission). Otter's privacy policy says it trains on de-identified audio and on transcripts. The bigger risks are consent, retention and who receives the notes. Recording-consent law varies by state, so turn on consent prompts, set retention, and put the rules in your AI policy.

What actually makes a meeting note-taker risky

An AI note-taker records or transcribes a conversation, then writes a summary that is stored and shared. Each step creates a question for the business: is the content used to train someone's AI model, where is the summary kept and for how long, who receives it, and did everyone in the meeting know they were being recorded?

There are two broad kinds of tool. Built-in assistants, such as Microsoft Teams Copilot and intelligent recap, Zoom's meeting summary with AI and Google Meet's 'Take notes for me', run inside the meeting platform your company already administers. Bot-style services such as Otter.ai join meetings as a separate participant and keep the notes in their own service, under their own terms.

Neither kind is automatically safe or unsafe. The difference is which contract governs the data, and which admin controls your IT team actually holds.

Teams, Zoom, Google Meet and Otter compared

This table compares the four tools on training use, storage, retention, consent prompts, admin controls and plans. Each row cites the vendor pages it comes from; the numbers link to the source list at the end of the page. We have not listed prices, because vendors change them often and promotional prices vary by region; check the vendor's pricing page on the day you buy.

AI meeting note-takers: data and admin terms
Question	Microsoft Teams (Copilot and intelligent recap)	Zoom (meeting summary with AI)	Google Meet ('Take notes for me')	Otter.ai (Otter Notetaker)	Source
Is meeting content used to train the vendor's AI models?	No. Microsoft says prompts, responses and data Copilot accesses through Microsoft Graph are not used to train foundation models, and that intelligent recap customer data is not used for AI model training or testing.	No. Zoom says it does not use customer audio, video, chat, screen sharing, attachments or other communications-like content to train Zoom's or third-party AI models.	Not outside your domain without permission. Google says Workspace content is not human-reviewed or used for generative AI model training outside your domain without permission.	Yes. Otter's privacy policy says it trains its proprietary AI on de-identified audio recordings and on transcriptions, which it says may contain personal information. The policy does not describe a separate opt-out for this.	[1] [2] [10] [17] [22] [23]
Where the notes and recordings are kept	Recordings save to the organizer's OneDrive (channel meetings: the team's SharePoint site). Recap AI notes are stored in an Exchange folder in participants' mailboxes.	Summaries are available in Zoom Hub and are sent by email and to the meeting's group chat. Cloud recordings are kept in Zoom's cloud.	A Google Doc saved in the meeting organizer's Drive, in the Google Meet folder, and attached to the Calendar event.	In Otter's service, outside your Microsoft, Zoom or Google account. Deleted conversations sit in Trash for 30 days and are then permanently deleted from Otter's servers.	[5] [2] [11] [14] [18] [27]
Retention controls	Recordings and transcripts expire after 120 days by default; admins can change the period or set no expiry, and can apply Microsoft Purview retention labels. Recap features follow the recording retention policy. Copilot prompts and responses in meetings may be retained for compliance even when recording and transcription are off.	Admins can auto-delete meeting summaries to Trash after a set number of days and auto-delete cloud recordings; recordings in Trash can be recovered for up to 30 days. Only the host can delete a summary. Zoom's pages we checked do not state a default retention period for summaries.	Admins say AI notes docs follow Meet retention policies; Google Vault says the notes are also subject to Drive retention rules.	The privacy policy keeps personal information as long as necessary for its stated purposes. Custom retention policies (minimum 24 hours) are set through an Otter account manager.	[6] [5] [2] [3] [12] [14] [11] [19] [21] [22] [28]
What participants are told, and consent prompts	Everyone is notified automatically when recording starts. Admins can turn on 'Require participant agreement for recording and transcription' (off by default): participants stay muted, with camera and sharing off, until they agree, and anyone who declines gets a view-only meeting.	An in-meeting indicator changes color when AI features such as meeting summary are active, and phone participants hear an audio notice. Admins can require explicit consent before participants are recorded for AI; until they accept, they cannot unmute or turn on their camera.	Meet tells all participants that notes are being taken and shows a pencil icon. Admins can require explicit consent from all participants (off by default).	Otter Notetaker joins as a named participant and, unless the chat announcement is turned off, posts a chat message with a link to the live transcript. If pre-recording emails are enabled, Otter emails calendar guests in advance. For Teams meetings, an optional Otter for Outlook permissions page makes each participant accept recording before joining; Otter says it requires the Microsoft Enterprise license and is enabled through an Otter account manager. Otter's terms make the user solely responsible for giving notice and obtaining consent.	[8] [7] [11] [13] [18] [24] [23]
Who can turn it on	Organizers choose the Copilot setting for a meeting within what the admin's meeting policy allows. Turning Copilot off for a meeting also turns off recording and transcription.	The host starts it; if no AI feature is running, any participant can ask for it to be started.	Google's pages differ: the user help page says the organizer and participants inside the host's organization can start or stop notes, while the admin page says anyone in the meeting can start them if the organizer has the setting on. With Host Management on, only hosts can.	Each user's Notetaker can auto-join calendar events with a Zoom, Google Meet or Microsoft Teams link, including meetings the user does not host, depending on the user's auto-join settings.	[3] [11] [18] [19] [25]
Admin controls	The Teams meeting policy Copilot setting has four values: Enabled (default meeting option 'Only during the meeting', whose speech-to-text data is not saved after the meeting), EnabledWithTranscript (the default), EnabledWithTranscriptDefaultOn and Disabled. Recording and transcription are on by default in the global policy.	Turn meeting summary on or off at account, group or user level and lock it; choose who receives summaries (hosts only, internal invitees, or all invitees); restrict sharing outside the organization.	'Let people use Gemini note-taking in meetings' by organizational unit or group. From September 21, 2026, automatic note-taking is on by default for Business Standard and Business Plus meetings with 3 or more guests; admins can opt out. Default sharing is invited guests in your organization.	Enterprise: single sign-on, SCIM provisioning, workspace auto-join settings admins can lock, disabling external sharing, per-member Notetaker access and custom data retention. Business lists activity logs and usage analytics.	[3] [4] [12] [19] [20] [26] [29]
Which plans include it	Intelligent recap needs a Teams Premium or Microsoft Copilot license; audio recap and Copilot in meetings need a Microsoft Copilot license.	Included at no additional cost on eligible paid Zoom Workplace plans. The free Basic plan lists meeting summaries for 3 hosted meetings per month. Zoom now names its built-in AI features by what they do rather than 'AI Companion'; ZoomMate is a separate new add-on.	Business Standard, Business Plus, Enterprise Standard and Enterprise Plus.	A separate subscription: Basic (free), Pro, Business and Enterprise. Single sign-on and SCIM are Enterprise features with a 100-user minimum.	[9] [3] [15] [16] [19] [29]

Checked against the vendor pages in the source list on October 20, 2026. Vendors rename features and change terms often; Zoom, for example, moved away from the 'AI Companion' name in June 2026. Confirm the current versions before you rely on them. This table covers company accounts, not personal or consumer accounts.

Recording consent: the law varies by state

Federal law, 18 U.S.C. 2511(2)(d), generally permits recording a conversation when one party to it consents, unless the recording is made for a criminal or tortious purpose. State laws differ. Washington's statute, RCW 9.73.030, for example, generally prohibits recording a private conversation or communication without first obtaining the consent of all the participants. Meetings that include people in several states or countries can fall under more than one law.

This page is not legal advice. Ask your attorney which rules apply to your meetings. The practical point for IT is that each vendor leaves consent to you: Microsoft notes that, depending on region, you may need everyone's permission before recording, and Otter's terms say the user is solely responsible for notices and consent. Turning on the consent prompt your platform offers helps show that participants were told; in Teams, for example, each participant's choice appears in the meeting attendance report.

Built-in assistants versus note-taking bots

A built-in assistant keeps recordings, transcripts and summaries inside the platform you already administer, under retention and sharing settings your IT team controls.

A bot-style note-taker works differently. Otter's Notetaker can join any calendar event with a Zoom, Google Meet or Microsoft Teams link, depending on each user's auto-join settings, including external meetings the user does not host. The recording and transcript then live in Otter's service, and Otter's privacy policy says it trains its AI on de-identified audio recordings and on transcriptions, which it says may contain personal information. Otter's Enterprise plan adds controls such as single sign-on, locked auto-join settings, disabled external sharing and custom retention, but those controls only apply to accounts in your company's Otter workspace.

Otter does notify people: its Notetaker appears in the participant list, and it can also post a chat message and email calendar guests in advance, though both are settings that can be turned off. For Teams meetings, Otter also offers an optional permissions page, enabled through an Otter account manager, that makes each participant accept recording before joining. Notice is not the same as agreement, so decide in policy whether third-party bots may record company meetings at all, and if so, which notice and permission settings must stay on.

Settings to check before you allow AI note-takers

Whichever tool you use, these are the settings that decide how safe it is in practice:

Turn on the platform's consent prompt: participant agreement for recording and transcription in Teams, the AI consent requirement in Zoom, or explicit consent in Google Meet. Check what each prompt covers; Microsoft documents the Teams prompt for recording and transcription, not for Copilot's 'Only during the meeting' mode.
Set a retention period for recordings, transcripts and AI notes that matches your records policy, rather than leaving the default.
Limit who receives summaries automatically. Zoom and Google Meet both let you keep them inside your organization.
Decide where AI should be on by default. In Teams that is the meeting policy Copilot setting; Google Workspace turned on automatic note-taking by default on some plans in September 2026.
Decide whether third-party note-taking bots are allowed, and on which plan, before employees connect them to their calendars.
Tell employees which meetings should never be recorded or summarized, such as HR, legal and board discussions.

Put the rules in your AI policy

Meeting note-takers belong in the same policy that covers chatbots. Our answer on whether employees can use ChatGPT with company data explains the data classes and approved-tool approach, and our AI acceptable use policy template gives you a starting document. Add a short section that names the approved note-taker, states which meetings may be recorded, requires the consent prompt, and sets how long notes are kept.

Common follow-up questions

Do we need everyone's consent to use an AI note-taker?

It depends on where participants are. Federal law generally allows recording with one party's consent, but some states, such as Washington, generally require the consent of all participants in a private conversation. This is not legal advice; ask your attorney which rules apply. On the IT side, your platform's consent prompt can require participants to agree before they can take part, or leave.

Do Microsoft, Zoom and Google train AI on our meeting recordings?

On company accounts, Microsoft and Zoom say no, and Google says not outside your domain without permission. Microsoft says Copilot prompts, responses and Graph data are not used to train foundation models; Zoom says it does not use customer audio, video, chat or similar content to train AI models; Google says Workspace content is not used for model training outside your domain without permission.

Can an AI note-taker join a meeting someone else hosts?

Yes, in some cases. Otter's Notetaker can auto-join external meetings on a user's calendar. In Zoom, any participant can ask the host to start meeting summary. In Google Meet, participants can start notes unless Host Management limits it to hosts; Google's help and admin pages differ on whether that includes people outside the host's organization.

Is Zoom AI Companion still the name?

No. Zoom said in June 2026 that its AI features now go by what they do, such as meeting summary with AI, rather than the AI Companion brand, and launched ZoomMate as a separate new add-on. Existing Custom AI Companion customers continue to be supported, and core AI features stay included with eligible paid Zoom Workplace plans.

Should we ban Otter and other note-taking bots?

That is a policy decision, not a technical one. If you allow them, require a company-managed workspace with admin controls, limit auto-join and external sharing, and require notice. If you do not, say so in your AI policy and give staff an approved built-in alternative.

Need help with this?

LAN Service Group helps companies decide which AI meeting note-takers to allow, configures consent prompts, retention and sharing settings in Microsoft Teams, Zoom and Google Workspace, and writes those rules into the company's AI acceptable use policy.

Talk to LAN Service Group LAN Service Group AI services → (888) 281-7243