The best AI assistants for consultants, by the job you need done

Most lists of the best AI for consultants rank chatbots by how well they write. A consulting partner's week isn't a writing problem. It's seven engagements, a hundred threads, three PDFs you half-read on the train, and a call at nine where you need to be right about what the client said in March. This shortlist is judged on that job — and every claim about another product below was read from that vendor's own documentation on 2026-09-04.

The shortlist

If you only read one block, read this one. Eight tools, one line each, each best at something the others aren't.

1. ChatGPT — best all-round assistant for drafting and thinking, with memory that also draws on the files and apps you connect.
2. Claude — best if you want to read, edit and delete exactly what the assistant remembers, topic by topic, with citations back to the chat it came from.
3. Gemini — best if your work runs on Google and you're outside the European Economic Area, the UK and Switzerland, where its connected apps aren't offered.
4. Microsoft 365 Copilot — best if your firm runs on Microsoft 365 and holds the Premium licence, so it can draw on your mail, files and meetings without you uploading anything.
5. Granola — best meeting notes without a bot in the room, plus a short brief before external meetings on its paid plans.
6. Notion AI — best if your engagement material already lives in Notion and your team is on the Business plan.
7. Mem — best proactive chief of staff for your notes and tasks, nudging you when a follow-up is due.
8. Equerry — best when you want an assistant that remembers only what you hand it — a CC'd thread, a PDF, a voice memo, a note — and shows where an answer came from when it draws on your notes, emails or the web. Available on the App Store for iPhone and iPad.

None of them is best at everything. The useful finding is that they fall into three shapes: general assistants that remember their own conversations plus whatever whole accounts you connect (1–4); meeting and notes tools that remember what happened in a room or on a page (5–7); and one built around material you choose item by item (8). Which shape you need decides the pick, not the ranking.

How this list was judged

Five questions, all in the terms a client-facing consultant would actually use. Writing quality, coding and image generation are not scored — all eight can draft an email, and that isn't the job here.

• Meeting prep. Can it put what you need in front of you before the call, rather than help you search after it?
• Client follow-ups. Does it notice the reply you owe, or wait to be asked?
• Email and document recall. When a client said something in a thread in March, can it find it in October — and how much of your inbox did you have to hand over to make that possible?
• Source-backed answers. Does an answer drawn from your material arrive with the email, note or document it came from, so you can check it before repeating it to a client?
• Control over what's remembered. Can you see the record, correct it, delete one item — and does deleting one item actually remove it?

One rule on evidence: nothing below is from memory or from another listicle. Each product's entry was written from the vendor's own help pages and product pages as they read on 2026-09-04, and quoted where the wording matters. These products change their controls often and roll changes out to accounts at different times, so your own settings screen is the authority, not this page.

1. ChatGPT — the widest reach, in summary form

What it does best. ChatGPT is the strongest general assistant on the list for the thinking work — structuring an argument, drafting a difficult reply, pressure-testing a recommendation. Its memory is also the broadest in scope by OpenAI's own description: "When enabled, memory helps ChatGPT automatically remember useful context from your chats, files, and connected apps to personalize your experience." Apps extend that reach — "Apps connect ChatGPT to services you already use, such as Google Drive or Slack, so you can work with their information in a conversation" — and OpenAI states that with Memory on, "ChatGPT may remember relevant information accessed from the app, unless that app or connected source restricts Memory from saving that information." Under each answer, a book icon shows "what sources were used to personalize a response such as custom instructions, past chats, files, and memories." (OpenAI Memory FAQ and Apps in ChatGPT, read 2026-09-04.)

For meetings, ChatGPT Record "can transcribe and summarize audio recordings like meetings, brainstorms, or voice notes," and a "Reference record history" setting lets it "reference your generated notes and transcripts from your past recordings." OpenAI's page states it is "available for Plus, Enterprise, Edu, Business, and Pro workspaces, and only available for the macOS desktop app."

Where it falls short for this job. The record is a synthesis, not a list. OpenAI says so directly: the memory summary "will not include everything that ChatGPT remembers based on your chats," and the sources shown under an answer "may not show every factor or source that shaped a response." Deleting cleanly is correspondingly wide — "To fully delete something ChatGPT may know about you, you'll need to delete every source where it appears, including past chats, archived chats, files, the memory summary, and disconnect any connected apps that may contain that information." Reaching your mail means connecting the account, and which apps you can connect "depends on the app, your ChatGPT plan, region, workspace, role, model, and the ChatGPT interface you use."

Pick it if you want one assistant that quietly knows the most about you with the least effort, and you're comfortable reading a summary of what it remembers rather than an itemised record.

2. Claude — the record you can actually read

What it does best. Claude is the pick if your instinct is "show me what you think you know about me." Anthropic's help centre: "Claude saves memory as a set of individual topics as you chat, rather than summarizing conversations after they end." In Settings > Memory, "Everything Claude remembers is listed under Topics. Select any topic to read it, then use the edit icon to change it or select 'Delete' to remove it." Answers are traceable — "When Claude references previous conversations, you'll see citations linking back to the original chats, along with the option to delete specific conversations" — and projects are walled off from each other: "Each project has its own separate memory space and dedicated project summary." For a consultant keeping two clients apart, that last line matters. Anthropic states memory "is on by default for Free, Pro, and Max plans on the web, Claude Desktop, and Claude Mobile," and that on Team and Enterprise plans it "is off by default and can be turned on by an owner." Searching past chats "is available to users on paid plans (Pro, Max, Team, and Enterprise plans)." (Read 2026-09-04.)

For email, Claude's Gmail, Google Calendar and Google Drive connectors are "available for all users on Claude and Claude Desktop." Anthropic says Claude accesses that data "only when you explicitly ask a question or request an action requiring this information, and retrieves the minimum information needed," and that "Claude's response includes citations indicating which emails, calendar events, or documents were used as sources, with links to the originals when available." That is fetching on request rather than remembering — it can answer from your mail today without that answer becoming part of what it knows tomorrow. Retrieved data "is retained with its associated chat, so you can delete any retrieved data by deleting the chat."

Where it falls short for this job. Memory outlives the conversation it came from — "When a conversation expires or is deleted, related memory entries generated from it won't be removed, but you can delete individual memories at any time" — so the forgetting is yours to do, topic by topic. The connector is still a whole-mailbox connection. And the pages we read describe no meeting capture of Claude's own: what it knows about a call is what you paste in.

Pick it if you want to audit and prune the record yourself, and you keep clients in separate projects.

3. Gemini — deepest into Google, with conditions

What it does best. If you live in Gmail, Calendar and Drive, Gemini reaches furthest into them. Google's connected-apps page lists "Google Workspace, which includes your content in services like Gmail, Calendar, and Drive" as one connection, alongside Contacts, Google Photos, Search services and YouTube. Memory of past chats is a separate switch: Google's page says "Gemini can learn from your chats to understand more about you and your world," controlled under Settings & help > Personal context, where you "Turn Memory off or on." To find out whether an answer used your history, Google's suggestion is to ask: "Did you use any info from past chats?" (Both pages read 2026-09-04.)

Where it falls short for this job. Three conditions catch consultants specifically. First, memory of past chats requires that you "Sign in with a personal Google Account" — Google states "This feature isn't available when you sign in to a work, school, or supervised Google Account" — so a firm-managed Workspace login doesn't get it. Second, the connected-apps feature is "Not available in the European Economic Area, Nigeria, Switzerland, or the United Kingdom," and on its connected-apps page Google notes that "Personal Intelligence is being released gradually and may not be available to you just yet." Third, there is no itemised list to read down: to remove something Gemini remembered, Google's route is to "delete all chats with this info from Gemini Apps Activity," and if it came from a connected app you must also disconnect the app — "You must complete both steps."

Pick it if your mail and documents are in Google, you use a personal account, and you're outside the excluded regions.

4. Microsoft 365 Copilot — the firm's own memory, if the firm pays for it

What it does best. For a consultant inside a Microsoft 365 firm, Copilot is the only tool here that can reach the organisation's mail, files and meetings without anyone forwarding anything — on the right licence. Microsoft's overview (dated 2026-08-27 by Microsoft, read 2026-09-04) separates three experiences: Copilot Chat (Basic), Microsoft 365 Copilot (Basic) and Microsoft 365 Copilot (Premium). Premium includes "Grounding responses in organizational data (emails, files, meetings, calendars, teams, or organizational relationships) through Microsoft Graph," and "pulls information automatically. You can specify the files to focus on, but you don't need to upload them manually." Access is "scoped by user permissions" — it sees what you already have rights to. In Outlook, "Summary by Copilot" sits at the top of a thread, and the summary "may also include numbered citations that, when selected, takes you to the corresponding email in the thread." In Teams, a recap can include "the event recording, transcript, shared files, notes, custom summary, agenda, and follow-up tasks," with the AI features needing Teams Premium or a Copilot licence and a transcribed meeting.

Memory is explicit and, unusually, Microsoft states the default: "Saving memories is On by default in Microsoft Copilot. If Copilot comes across information that seems important to remember, it asks you if you would like to save that information for future chats." What it saves is "key details about you and your work," such as "what your job role is, common tasks you need to complete, or skills you want to improve," listed under Saved memories in Chat settings > Personalization, where you can delete one or select "Delete all memories."

Where it falls short for this job. The Basic experiences "can't use organizational data via Microsoft Graph when interacting with Copilot Chat. You must upload the content with your prompt, work with open content (Teams and Outlook), or use a pay-as-you-go agent" — so without Premium, the automatic recall is not there. It is a tenant product, so your firm's admin decides what's on. And its memory is described in terms of you — role, tasks, skills — not as a record of what a client said. Anything outside the tenant, like a PDF a client sent to your personal address or a voice memo on your phone, is outside the Graph.

Pick it if your firm is on Microsoft 365, has bought the Premium licence, and the material you need lives inside that tenant.

5. Granola — notes from the call, without a bot

What it does best. Granola calls itself "The AI notepad for people in back-to-back meetings," and the design choice consultants notice first is that it "Uses your computer audio, so doesn't invite a bot" — no third participant announcing itself on a client call. It "Works with Zoom, Google Meet, Teams and every other meeting app," runs on macOS, Windows, iOS, Android and Apple Watch, and its chat is "AI chat that already knows what you're working on." On its Business and Enterprise plans with Google Calendar connected, it prepares a pre-meeting brief — "usually 2-3 bullet points – with open threads, relevant context from the web or your calendar" — built from "Your previous Granola notes with the same people or company," your calendar event, the wider web, and Gmail if you choose to connect it. Granola's docs are clear about the scope: "Briefs are only generated for meetings with people outside your own organization." (Read 2026-09-04.)

Where it falls short for this job. What Granola knows is what was said in meetings it heard, plus Gmail if you connect the account. The contract PDF, the reply that came in while you were with another client, the voice memo on the walk to the car — none of that is in it unless it happened on a call. And the free plan's horizon is short: "Unlimited meeting notes for free. Take as many notes as you'd like. Upgrade to view and work with notes older than 30 days." Thirty days is exactly the window a consultant tends to need to see past.

Pick it if your days are back-to-back calls and you want the notes done without a bot, and you're prepared to pay for history and briefs.

6. Notion AI — if the engagement already lives in Notion

What it does best. Notion AI is excellent inside a Notion workspace, and its 2026 feature set is broader than a writing assistant. Notion Agent "Completes complex, multi-step tasks using context from Notion, your connected apps, and the web." Enterprise Search finds answers "searching your workspace and your connected apps like Slack, Google Drive, Jira, and more," and Notion states that when it "answers a question using information from your workspace or a connected app, it'll always cite its sources so you can go back to the source." AI Meeting Notes captures through your device's microphone and system audio — "no bot needed" — and produces transcripts with speaker labels, summaries and action items. (Notion product, help and pricing pages, read 2026-09-04.)

Where it falls short for this job. The consultant-grade features are plan-gated: Notion's help centre states AI Meeting Notes and Enterprise Search are "available on Business and Enterprise Plans," and on the pricing page the "Notion Agent (chat, generate, autofill, translate)" row is marked "Limited Trial" on the Free and Plus plans and included on Business and Enterprise. It is workspace-shaped — the unit is the team's pages and connected tools, not a personal assistant that follows you into a call — and the pages we read describe search and agents rather than a memory of you that persists across sessions. If your clients' material arrives by email and on your phone, it has to be brought into Notion first.

Pick it if your engagement documentation is already in Notion and your team is on the Business plan.

7. Mem — the proactive chief of staff for your notes

What it does best. Mem positions itself as "Your AI chief of staff," and the promise is agency rather than recall: "Mem Agent builds a living picture of your tasks, projects, and goals—then steps in at the right moments to keep you moving." It captures the way you already work — "Write it down, say it out loud, record a meeting, or save it from the web" — and "listens without a meeting bot, writes the notes, and keeps track of decisions and follow-ups." Its stance on visibility is close to ours: "Important context lives in familiar notes—not a hidden file or opaque chat history." The follow-up behaviour is the standout for a consultant who owes six replies: "Mem Agent decides when a nudge will actually help—then reaches out with the relevant context and a clear next step." Its download page lists it "for Mac, Windows, iOS & Web," and its pricing page counts "email sent to Mem" as a message, so you can send it a thread. (Mem homepage, download page, help centre and pricing page, read 2026-09-04.)

Where it falls short for this job. Reaching outside your notes means a Connection, which starts on the Pro plan: "A Connection links Mem to an external source such as Gmail, Slack, or Todoist" — and the link is to the account, not to a thread. Every plan meters notes and messages per month. And the pages we read describe recall from "notes, meetings, and connected sources by meaning" without documenting a per-answer link back to the specific email or document — if that's the thing you check before a client call, verify it in the product.

Pick it if your working material is notes and tasks first, and you want something that reminds you before you remember.

8. Equerry — remembers what you handed it, shows you the original

What it does best. Equerry is a personal assistant for iPhone and iPad, and the one tool here built around the third shape: it knows the material you chose to give it, item by item, and nothing else. On the five criteria: recall — put Equerry's address (yours would look like mark@mail.getequerry.app) on the CC line of a client thread once, from whatever mail app you already read in, and each later reply on that thread lands by itself; the contract PDF, the whiteboard photo and the screenshot come in through the share sheet from any app; the memo you dictate in the car and the note you type at the gate join the same archive, all searchable together. Meeting prep — with the call on your calendar, a brief lands beforehand, built only from what you shared, late unopened reply included. Follow-ups — a scheduled brief on the rhythm you set, Monday morning before the week's calls, say, rather than only when you think to ask. Sources — an answer drawn from your material comes with a chip that opens the actual email, note or page, so you check the line before you say it to the client. Control — every fact taken from what you shared is listed in Settings, each saved item shows what was drawn from it, and deleting an item takes what came from it along too. Nothing expires on a timetable you didn't set.

Where it falls short for this job. We don't win every row here, and we'd rather say so. Equerry isn't on your calls and doesn't record or transcribe them; a meeting exists for it only once you've sent something afterwards — the memo, your notes, or a transcript from one of the notetakers above. Nothing else arrives on its own: a thread it wasn't CC'd on is invisible to it, which is the point, but the choosing is yours to do. Keep ChatGPT or Claude for the drafting and the thinking, and Copilot if you need a firm's tenant searched. And it's phone-only: no Mac or Windows app, which every other tool on this list has.

As for where it all rests: what you create in the app stays in your own iCloud account, a forwarded or CC'd message is read at our email provider and then deleted from it (your own copy stays in your mailbox), and the searchable excerpts and extracted facts that make any of it answerable sit on our servers — every extracted fact listed in Settings → Your Memory and deletable on a tap, and every excerpt gone when you delete the item it came from — the full account is in our privacy policy.

Pick it if your work runs on specific client threads, documents and calls, you want to choose what the assistant sees item by item, and you want to see where an answer came from when it draws on your notes, emails or the web.

At a glance

Every quotation above was read on 2026-09-04 from the vendors' own pages: OpenAI's "Memory FAQ", "ChatGPT Record" and "Apps in ChatGPT"; Anthropic's "Use Claude's chat search and memory to build on previous context" and "Use Google Workspace connectors"; Google's "Get personalization with memory of your past Gemini chats" and "Connect your Google apps to personalize your Gemini experience", and Google Meet's "Take notes for me" help page; Microsoft's "What is Microsoft Copilot?" overview, "Manage Copilot Memory in Microsoft Copilot", "Summarize an email thread with Copilot in Outlook" and "Recap in Microsoft Teams"; Notion's AI product page, "AI Meeting Notes" and "Enterprise Search" help pages and pricing page; Granola's homepage, pricing page and "Pre-meeting briefs" documentation; Mem's homepage, download page, help centre and pricing page. Plan names and controls change; check the vendor's page before deciding.

Three shapes, and the question to ask before you choose

Run the five criteria across the eight and the list sorts itself. The general assistants — ChatGPT, Claude, Gemini, Copilot — remember their own conversations and, once you connect one, a whole account. The meeting and notes tools — Granola, Notion, Mem — remember what was said in a room or written on a page. Both are good at their shape. Neither is built around how a partner's material actually turns up: a client email moving the board review, a memo dictated after the call that confirmed it, the contract as a PDF from their lawyers, a photo of the whiteboard — and a call next month where all four have to be in your head at once. Connecting the mailbox reaches the email but hands over every other thread with it, a larger decision than the one you were making; the memo and the photo were never in a mailbox to begin with. So the question that sorts this list isn't "which AI has the best memory." It's: do you want an assistant that knows everything in an account, or one that knows exactly what you handed it and can show you the original? If the first, pick from 1–4 by the ecosystem you live in and add a notetaker from 5–7. If the second, that's the shape Equerry was built to be — alongside, not instead of, the assistant you already think with.

Last updated 2026-09-04.

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