ToolRankBest AI tools that work in Google Docs
Updated 24 Oct 2026 · Prices from vendor pages only · How we rank →
The short answer
Each of these tools works inside Google Docs or exports to it. ProWritingAid comes first: grammar and style checker aimed at fiction writers. The cheapest verified paid plan here is Gemini for Google Workspace Business Starter ($7/user/month). 5 of the 7 have a free plan we could confirm. Every price below is from the vendor’s own page, checked 16–22 Oct 2026.
Ranked shortlist
- ProWritingAid: Grammar and style checker aimed at fiction writers. Plan: Premium: $10/month yearly ($120) or $30 monthly
Unlimited line editing reports - Gemini for Google Workspace: AI inside the Google Workspace apps teams use daily. Plan: Business Starter: $7/user/month
- Superhuman: Fast email client with AI writing and triage. Plan: Pro: $12/member/month annually or $15 monthly
- Brisk Teaching: Chrome extension that helps teachers create, give feedback and differentiate. Plan: Not yet verified
- Diffit: A free Basic plan for teachers plus an individual Premium plan with exports. Plan: Individual teacher: $14.99/month billed monthly or $149.99/year billed annually
Save 16% yearly; exports and standards alignment - Twee: Built for language teaching with CEFR levels, with published per-seat school prices. Plan: Schools (3–10 seats): $8.33/seat/month ($99.95 per seat for 1 year)
11–20 seats $7.50, 21–50 seats $6.25 per seat/month - TeacherMatic: A free individual plan and a low-cost Professional plan, cheaper billed yearly. Plan: Not yet verified
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 | ProWritingAid | Premium: $10/month yearly ($120) or $30 monthly Unlimited line editing reports | $10/month (Premium, billed yearly $120; $30 monthly) | Free plan with core editing tools | Fiction and long-form writers who want manuscript-level editing reports | Monthly billing costs roughly three times the yearly rate | 18 Oct 2026 |
| #2 | 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 |
| #3 | Superhuman | Pro: $12/member/month annually or $15 monthly | $12/member/month (Pro, billed annually; $15 monthly) | Free: $0, AI assistant in your apps | AI writing help and email across apps | Plans now bundle Grammarly, Docs and Mail; check what you need | 18 Oct 2026 |
| #4 | Brisk Teaching | Not yet verified | Custom (schools and districts) | Free for teachers ($0) | Teachers creating lessons and feedback in the browser | School pricing not verified | 19 Oct 2026 |
| #5 | Diffit | Individual teacher: $14.99/month billed monthly or $149.99/year billed annually Save 16% yearly; exports and standards alignment | $14.99/month | Basic: free (PDF download, print, share; last 90 days of resources) | Teachers who need the same content at several reading levels (ELL, SPED, intervention) | Exports to Google, Microsoft and Canva need Premium or a school licence | 20 Oct 2026 |
| #6 | Twee | Schools (3–10 seats): $8.33/seat/month ($99.95 per seat for 1 year) 11–20 seats $7.50, 21–50 seats $6.25 per seat/month | $8.33/seat/month (Schools, 3–10 seats) | Trial: 5 runs, 500 audio credits | Language teachers, especially English teachers, making exercises from videos, texts and word lists | Only a 5-run trial is free; individual Basic and Pro prices were not shown on the fetched page | 20 Oct 2026 |
| #7 | TeacherMatic | Not yet verified | £6.99/month (Professional Individual) | Free Individual: £0, 15 generations a day, select AI generators | UK and international teachers who want quick AI-made teaching resources | Priced in GBP; the free plan caps generations at 15 a day | 22 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 ProWritingAid for fiction and long-form writers who want manuscript-level editing reports (Premium: $10/month yearly ($120) or $30 monthly). Watch out: monthly billing costs roughly three times the yearly rate. 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 Superhuman for AI writing help and email across apps (Pro: $12/member/month annually or $15 monthly). Watch out: plans now bundle Grammarly, Docs and Mail; check what you need. Pick Brisk Teaching for teachers creating lessons and feedback in the browser (Custom (schools and districts)). Watch out: school pricing not verified. Pick Diffit for teachers who need the same content at several reading levels (ELL, SPED, intervention) (Individual teacher: $14.99/month billed monthly or $149.99/year billed annually). Watch out: exports to Google, Microsoft and Canva need Premium or a school licence. Pick Twee for language teachers, especially English teachers, making exercises from videos, texts and word lists (Schools: 3–10 seats) ($8.33/seat/month ($99.95 per seat for 1 year)). Watch out: only a 5-run trial is free; individual Basic and Pro prices were not shown on the fetched page. Pick TeacherMatic for UK and international teachers who want quick AI-made teaching resources (£6.99/month (Professional Individual)). Watch out: priced in GBP; the free plan caps generations at 15 a day.
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?
ProWritingAid: Free plan with core editing tools; Superhuman: Free: $0, AI assistant in your apps; Brisk Teaching: Free for teachers ($0); Diffit: Basic: free (PDF download, print, share; last 90 days of resources); TeacherMatic: Free Individual: £0, 15 generations a day, select AI generators.
How were these tools chosen?
They are the tools in ToolRank's rankings with Google Docs listed by the vendor, confirmed on the vendor's own website on 16–22 Oct 2026. Tools we could not verify are left out rather than guessed, and anything unconfirmed is marked Not yet verified.
Sources
- ProWritingAid: ProWritingAid pricing checked 18 Oct 2026
- Gemini for Google Workspace: Google Workspace pricing checked 16 Oct 2026
- Superhuman: Superhuman pricing checked 18 Oct 2026
- Brisk Teaching: Brisk plans checked 19 Oct 2026
- Brisk Teaching: Brisk Teaching pricing checked 16 Oct 2026
- Diffit: Diffit pricing checked 20 Oct 2026
- Diffit: Diffit individual teacher subscription checked 20 Oct 2026
- Twee: Twee pricing checked 20 Oct 2026
- Twee: Twee school pricing checked 20 Oct 2026
- Twee: Twee terms (billing) checked 20 Oct 2026
- TeacherMatic: TeacherMatic pricing checked 22 Oct 2026
Related comparisons
Profiles: ProWritingAid · Gemini for Google Workspace · Superhuman · Brisk Teaching · Diffit · Twee · TeacherMatic
More best-of lists
- Best AI grammar checkers and editors
- Best AI writing tools for $10 a month or less
- AI writing tools that are cheaper billed yearly
- Best AI writing tools with desktop apps
- Best free AI writing tools (with a real free plan)
- Best paid AI writing tools (no free plan)
- Best AI writing tools for $15 a month or less
- Best AI writing tools for teams (per-seat plans)
- Best AI tools that work in Microsoft Word
- Best AI tools for Google Workspace users
- Best AI assistants built into office suites
- Best free AI business tools (with a real free plan)
- Full Writing & Content ranking →
Some links may be affiliate links. They never affect rank.
Get the weekly ToolRank brief
New AI tools, verified price changes and fresh comparisons. One email a week. Unsubscribe anytime.