ToolRankBest AI assistants built into office suites
Updated 16 Oct 2026 · Prices from vendor pages only · How we rank →
The short answer
These AI assistants live inside a suite of documents, mail or work apps. Notion AI comes first: AI built into the docs and databases teams already use, with custom agents on Business. The cheapest verified paid plan here is Gemini for Google Workspace Business Starter ($7/user/month). 2 of the 4 have a free plan we could confirm. Every price below is from the vendor’s own page, checked 16 Oct 2026.
Ranked shortlist
- Notion AI: AI built into the docs and databases teams already use, with custom agents on Business. Plan: Plus: $10/member/month
AI trial - Microsoft 365 Copilot: Copilot works directly inside the Microsoft 365 apps most businesses already use. Plan: Copilot Business: $18/user/month paid yearly
- Gemini for Google Workspace: AI inside the Google Workspace apps teams use daily. Plan: Business Starter: $7/user/month
- ClickUp: All-in-one work hub with a free forever plan and low entry price. Plan: Unlimited: $7/user/month yearly ($10 monthly)
Tools come from several ToolRank categories, so they are grouped by category and then by each category’s editorial rank. Anything we couldn’t confirm on a vendor page says “Not yet verified”.
Side by side
| Rank | Tool | Relevant plan | Starting price | Free plan | Best for | Main limitation | Last checked |
|---|---|---|---|---|---|---|---|
| #1 | Notion AI | Plus: $10/member/month AI trial | $20/member/month (Business, includes Notion AI) | Free plan includes a trial of Notion AI only | Teams whose knowledge already lives in Notion | Free and Plus only include an AI trial; full AI needs Business ($20/member/month). | 16 Oct 2026 |
| #2 | Microsoft 365 Copilot | Copilot Business: $18/user/month paid yearly | $18/user/month paid yearly (Copilot Business) | ✕ None listed | Microsoft 365 organisations | Per-user, annual-commitment pricing on top of Microsoft 365. | 16 Oct 2026 |
| #3 | Gemini for Google Workspace | Business Starter: $7/user/month | $7/user/month (Business Starter; promo $3.50 shown) | ✕ None listed | Teams on Google Workspace | Priced per user per month as part of Workspace plans (max 300 users on Starter-Plus). | 16 Oct 2026 |
| #4 | ClickUp | Unlimited: $7/user/month yearly ($10 monthly) | $7/user/month (Unlimited, billed yearly; $10 monthly) | Free Forever: 60MB storage, unlimited tasks and members | Teams consolidating tasks, docs and goals | Free plan: 60MB storage; automations limited per tier. | 16 Oct 2026 |
Prices as listed by each vendor on the last-checked date, USD, before tax. Plans and limits change, so follow the sources below.
Who should pick which
Pick Notion AI for teams whose knowledge already lives in Notion (Plus: $10/member/month); think twice if you don't use Notion. Pick Microsoft 365 Copilot for microsoft 365 organisations (Copilot Business: $18/user/month paid yearly); think twice if your team runs on Google Workspace. Pick Gemini for Google Workspace for teams on Google Workspace (Business Starter: $7/user/month); think twice if you're a Microsoft 365 shop. Pick ClickUp for teams consolidating tasks, docs and goals (Unlimited: $7/user/month yearly ($10 monthly)); think twice if you want a minimal, simple task app.
FAQ
Which of these is cheapest?
Gemini for Google Workspace Business Starter ($7/user/month) is the lowest paid price we verified on this list (https://workspace.google.com/pricing, checked 16 Oct 2026). Check the vendor page for tax, billing period and usage limits.
Which of these have a free plan?
Notion AI: Free plan includes a trial of Notion AI only; ClickUp: Free Forever: 60MB storage, unlimited tasks and members.
How were these tools chosen?
They are the tools in ToolRank's rankings with AI bundled into a productivity suite plan, confirmed on the vendor's own website on 16 Oct 2026. Tools we could not verify are left out rather than guessed, and anything unconfirmed is marked Not yet verified.
Sources
- Notion AI: Notion pricing checked 16 Oct 2026
- Microsoft 365 Copilot: Microsoft 365 Copilot business checked 16 Oct 2026
- Gemini for Google Workspace: Google Workspace pricing checked 16 Oct 2026
- ClickUp: ClickUp pricing checked 16 Oct 2026
Related comparisons
Profiles: Notion AI · Microsoft 365 Copilot · Gemini for Google Workspace · ClickUp
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