What's the best AI grant writer for a small business?

It depends on how often you apply. If you apply a few times a year, paying per application can cost less: WinAGrant is $25 for one, with no subscription. If your team writes several grants a month, a subscription like Grantboost, GrantCopilot, Grantable or Granted AI can cost less per draft. For NIH and research proposals, GrantCopilot and Granted AI are built around that work.

Does WinAGrant have a subscription?

No. You pay per application: $25 for one, or $97 once for 10 that never expire.

Is the $25 refundable?

Yes, in two cases. If the grant you bought an application for wasn't real, had already closed when you bought, or is objectively closed to businesses like yours, we refund the $25. And if you find you don't qualify for the grant you picked, email hello@winagrant.com within 14 days of purchase and we refund the $25. That 14-day refund covers one $25 purchase per customer, and if the grant hasn't opened yet when you buy, the 14 days start the day it opens. We never promise you'll win; the funder decides.

Prices checked October 14, 2026

AI grant writers, compared honestly

Prices from each company's own pricing page, checked October 14, 2026. Where another tool fits you better, we say so.

Side by side

Tool	Price	Built for	Fits best when
WinAGrant	$25 for one application, or $97 for 10 ($9.70 each) that never expire. One charge per purchase. No subscription.	U.S. small businesses and nonprofits	You apply a few times a year and want to pay per application, with no subscription to remember to cancel.
Grantboost	Starter $32/mo, Growth $49/mo, Autopilot $66/mo (annual billing option)	Nonprofits, agencies and universities	Your team writes several grants a month, wants unlimited AI usage, or wants drafts trained on its past proposals.
GrantCopilot	$24/mo plus tax, or $18/mo billed annually	Nonprofits, researchers and grant professionals	You're writing NIH or other research proposals, or you'll draft more than one application a month.
Grantable	Free; Starter $50/mo; Pro $150/mo (17% off billed annually)	Grant teams; Pro is for teams running many grants at once	You want a team workspace, you're working through a long federal solicitation, or you want to try the tool on a free plan first.
Granted AI	Basic $29/mo (3 drafts a month); Professional $89/mo or $680 billed annually (unlimited drafts)	Nonprofits, researchers and small teams	You'll submit 3 or more proposals a year and want a guarantee tied to funding, or you'll use 3 drafts every month.
Instrumentl	Discover $299/mo billed annually ($349 monthly); Pre-Award $499/mo billed annually ($579 monthly)	Grant teams	You run a grants program with staff and a budget, and want pipeline, team and post-award tools in one place.

Each tool's page links the source we read. Prices change, so check before you buy.

One tool at a time

Weighing ChatGPT or Claude instead? Our roundup covers general AI tools too: the best AI grant writing tools for small businesses.

Questions

What's the best AI grant writer for a small business?: It depends on how often you apply. If you apply a few times a year, paying per application can cost less: WinAGrant is $25 for one, with no subscription. If your team writes several grants a month, a subscription like Grantboost, GrantCopilot, Grantable or Granted AI can cost less per draft. For NIH and research proposals, GrantCopilot and Granted AI are built around that work.
Does WinAGrant have a subscription?: No. You pay per application: $25 for one, or $97 once for 10 that never expire.
Is the $25 refundable?: Yes, in two cases. If the grant you bought an application for wasn't real, had already closed when you bought, or is objectively closed to businesses like yours, we refund the $25. And if you find you don't qualify for the grant you picked, email hello@winagrant.com within 14 days of purchase and we refund the $25. That 14-day refund covers one $25 purchase per customer, and if the grant hasn't opened yet when you buy, the 14 days start the day it opens. We never promise you'll win; the funder decides.

Refund details are in Section 3 of our Terms.

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