6 AI Tools Under $20/Month in 2026 — If You Pay Annually

This article used to promise seven AI tools under $20 a month. When we rechecked every price in August 2026, two of the seven weren't under $20, one price didn't exist at all, and the title didn't survive contact with its own contents.

So here's the corrected version, and the correction turns out to be more useful than the original list.

"Under $20 a month" isn't a property of these tools. It's a property of how you pay for them. The same six tools cost $68.33/month billed annually, or $107.58/month billed monthly — a 57% difference. Grammarly alone swings from $12 to $30 depending on which button you click.

Nobody writing about cheap AI tools mentions this. Several articles quote annual-only prices as if they were monthly, which is how you end up budgeting $12 for something that bills you $30.

The Six, and What They Actually Cost

Verified against each vendor's own pricing page, August 2026.

Corrected 10 September 2026. This table listed Make Core at $9 in both columns, and the section on Make below called it the one tool here whose annual and monthly prices barely differ. Both were wrong. $9 is Core's price billed annually — the figure Make's pricing page shows until you click its monthly toggle. Billed monthly, Core is $10.59. The monthly total was $105.99 and is $107.58, and the gap between the columns is 57%, not 55%.

Three of these break the $20 promise on monthly billing: Claude sits exactly at $20 rather than under it, Grammarly hits $30, and Canva is close at $18.

The spreads are unusual. A typical annual discount in software is 15–20%. Here: Make 15%, Claude 15%, Notion 17% — normal. Then Canva 33%, Otter 51%, and Grammarly 60%. When a vendor discounts that hard for annual, they're buying your commitment, not rewarding your loyalty. More on what that costs you below.

What Changed Since We Published

Three corrections we owe you.

Canva Pro is $18/month, not $15. It went $12.99 → $15 → $18. Annual is $144/year, about $12/month.

Notion was listed at "$18/month (Plus + AI)". That price never existed. Plus is $10 annual, $12 monthly. The standalone AI add-on has been discontinued, and full Notion AI now requires Business at $20–24/member/month.

Grammarly restructured. Premium and Business folded into a single Grammarly Pro plan. And its AI is now metered: 100 prompts a month on free, 2,000 on Pro. You can't buy extra.

1. Claude Pro — $17 annual / $20 monthly

Replaces: the drafting time you'd otherwise pay a copywriter for. (This line used to quote copywriters at "$50–400/hour" and say Claude "pays for itself on the first hour it saves". Neither had a source, and the same was true of the VA and proofreader rates further down. All three are gone.)

Emails, proposals, articles, client briefs. Claude is what we use for these, and first-draft quality is the thing that matters when you are the one doing the editing. We previously wrote that we had "tested most alternatives" before reaching that view. We had not run a documented comparison, so that claim is gone — this is a working preference, not a test result.

Before you pay, though: ChatGPT's free tier has had unlimited text chats since 6 August 2026 — we covered it in ChatGPT's free tier now has unlimited text chats. If writing is all you need, start at $0 and see whether the quality gap is worth $17 to you. It might not be.

And the cheapest credible paid assistant isn't $20 any more. Google AI Plus is $4.99/month — Gemini 3 Pro, Deep Research, NotebookLM, and Gemini inside Gmail and Docs. If your work lives in Google's apps, that undercuts everything here.

2. Make Core — $9 annual / $10.59 monthly

Replaces: the repetitive admin you'd otherwise hand to a virtual assistant.

The one we'd give up last. Billed annually it's $9 a month; month to month it's $10.59 — a normal 15% discount, not the near-zero gap we previously described here. Core gives you 10,000 credits and unlimited active scenarios — the free plan caps at two, which is the wall most people actually hit.

Watch the unit. Make renamed "operations" to credits on 27 August 2025. Standard modules cost 1 credit, but Make Code costs 2 credits per second of execution and native AI modules vary — one audio transcription can run to 50 credits. The 10,000 goes further than it sounds for ordinary automations and much less far for AI-heavy ones.

We compared Make against everything else in Make.com alternatives and against Zapier in Zapier vs Make.

3. Notion Plus — $10 annual / $12 monthly (and you may not need it)

Replaces: a project manager, a notes app, a wiki and a light CRM.

Honest caveat, and it's a real one: most solopreneurs shouldn't buy this. For a single-member workspace, Notion's free plan gives unlimited blocks — the 1,000-block limit everyone quotes only applies once a second member joins. The usual reason people upgrade is the 5MB file-upload cap, not the block limit.

So: use free until a 5MB file or the 7-day version history actually stops you. Then pay.

Full Notion AI is not in Plus — that's Business at $20–24. On Free and Plus you get a one-time trial allowance of AI responses.

We built a whole CRM inside it in How to build a free CRM in Notion.

4. Canva Pro — $12 annual / $18 monthly

Replaces: a designer for routine work. Not for brand identity — for the social graphic you need in ten minutes.

The price rose twice since we published, $12.99 → $15 → $18. Annual billing at $144/year is where it stays comfortably under $20.

The free plan is genuinely good for social graphics and simple presentations. Pro adds the Brand Kit, background removal, transparent PNG export and Magic Resize. Free-plan AI is credit-limited and we're not going to quote you a number — the two sources we checked disagree on whether it's a one-off pool or monthly, and neither is Canva's own documentation.

5. Grammarly Pro — $12 annual / $30 monthly

Replaces: a proofreader.

This is the tool where billing cadence matters most on the whole list. $12 annually, $30 monthly. If you're paying month to month, Grammarly is the single most expensive thing here — more than Claude.

It's also metered now: 2,000 AI prompts a month on Pro, 100 on free, with no option to buy more.

Cheaper alternatives that do the core job: ProWritingAid is $10/month annual (with a $399 lifetime licence), and LanguageTool is $4.99/month on a two-year plan and better across 30+ languages. If you write in more than one language, LanguageTool is the better tool as well as the cheaper one.

6. Otter Pro — $8.33 annual / $16.99 monthly

Replaces: taking your own meeting notes while also being the person talking.

The cheapest tool here on annual billing. It also comes with the clearest warning on this page.

Otter cut the Pro allowance from 6,000 minutes to 1,200 — and did not lower the price. Same $16.99/$8.33, 80% less of what you were buying. Pro is now 1,200 minutes a month (about 20 hours), 90 minutes per conversation, 10 file imports. Free is 300 minutes.

The people worst affected were annual subscribers, who had already paid for twelve months at the old allowance.

The Seventh Tool: There Isn't One

The original version listed Tidio as the seventh, for customer support, at "$0–29/month".

Tidio Starter is $29 monthly, $24.17 annually. Over the line either way. And its free plan gives 50 Lyro AI conversations one-off — Tidio's own wording, not 50 a month, which is how we'd described it here and in three other articles.

So we went looking for a sub-$20 AI support tool to replace it. There isn't one. Crisp's cheapest paid plan is $45. Zoho SalesIQ is $20/operator. HubSpot Service Hub is $20/seat. ChatBot.com is $19 annually and thin at that price.

Customer support is the one category where the cheap option is free, not cheap:

• Tawk.to — free forever, unlimited conversations, agents and chat history. You pay only to remove the branding.
• HubSpot's free CRM includes a live chat widget, so if you already use it you need nothing else.

Neither does AI resolution. That's the trade, and it's a fair one at solopreneur volume. If you genuinely want AI handling chats, Tidio at $29 is a good product — we tested five chatbots and it won — it just isn't a cheap one.

The Catch in "Pay Annually"

This article's answer is "bill annually and you're under $20." That deserves its counterweight, because it's a commitment these vendors make hard to exit.

• Otter: non-refundable. No prorated refunds, even mid-cycle.
• Grammarly: no refunds after 10 days on an annual plan.
• Canva: full refund within 30 days of purchase, nothing afterwards.

Now put that next to Otter cutting its Pro allowance by 80% at the same price. An annual plan locks in what you pay, not what you get. The vendor can shrink the product underneath you and there's no exit.

That isn't an argument against annual billing — the savings are real and often large. It's an argument for annualising only the tools you're certain about, and paying monthly for anything you're still evaluating. The extra cost of a monthly plan is the price of being able to leave.

The Budget Stack

If $68/month is still too much, here's what survives at almost nothing:

• ChatGPT Free ($0) — unlimited text chats since August 2026, which covers most writing
• Make Free ($0) — 1,000 credits, but only 2 active scenarios, which is the real ceiling
• Notion Free ($0) — unlimited blocks for a solo workspace; genuinely enough for most
• Canva Free ($0) — fine for social graphics
• Tawk.to ($0) — unlimited live chat
• Otter Free ($0) — 300 minutes a month
• Grammarly Free ($0) — 100 AI prompts a month, basic checks unlimited

Total: $0. Add Make Core — $9 a month billed annually, $10.59 monthly — the moment you want a third automation running — that's the first upgrade worth making, and it's the cheapest one here.

The fuller free-tier map is in the $0 solopreneur stack and 5 free AI tools for freelancers.

What This Stack Can't Do

Strategy and judgment. AI helps you think; it doesn't decide.

Client relationships. Negotiation, difficult conversations, trust. Still yours.

Original ideas. These tools execute well and originate poorly.

Knowing when a tool stopped being worth it. Nothing here will tell you that Otter halved your minutes or that Canva raised its price twice. Put a calendar reminder to re-check your subscriptions once a quarter — writing this article is the second time in five months we've found our own published prices out of date.

For the broader picture, see the complete 2026 solopreneur AI stack and our transparent cost breakdown.

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Every price here was verified against the vendor's own pricing page in August 2026, and both billing cadences are stated because the difference is 57%. Make's prices were opened again on 10 September 2026 with its billing toggle in both positions. Where we had published something wrong — the seven-tool count, Canva's price, Notion's non-existent $18 tier, Grammarly's plan name, Tidio's free allowance, Make Core's monthly price, and the unsourced hourly rates for copywriters, VAs and proofreaders — the correction is stated in the text rather than quietly removed. Links marked "Paid link" earn us a commission if you sign up through them, at no extra cost to you; no other link here pays us — how we make money.