The short answer: Sticker prices run from $0 (ChatGPT, Claude and Gemini free tiers) to $79/mo (Writesonic, now a GEO platform). But the real monthly cost includes editing time — and that flips the math. In our 30-day benchmark we timed editing on every piece, and the tool with the lowest sticker price in the set finished second-highest in real monthly cost. A $7.50 subscription is not a $7.50 tool if it costs you eleven dollars of editing per piece.
Three parts follow: the verified price ladder, the editing-time formula with the actual numbers, and a table that puts both together. Every figure is either a price we re-checked in September 2026 or arithmetic you can reproduce on a calculator; assumptions are labelled as assumptions.
The full price ladder, from our testing
Every price point below was priced out or paid during our 30-day test cycle and re-verified in September 2026. Cheapest first:
- $0 — Free tiers. ChatGPT Free, Claude Free, and Gemini's free tier. In our benchmark the ChatGPT and Claude free tiers out-scored every dedicated paid writing tool on raw prose. Full data in the 2026 benchmark.
- $5 — ChatGPT Go. A middle tier between Free and Plus.
- $7.50 — Rytr Saver (annual billing). Templates and tone presets; scored 7/10 short-form in our test. See the Rytr pricing guide.
- ~$12 — Grammarly Premium (annual billing). Polishing, not generating. Our review covers whether it earns its keep.
- $19.99 — Google AI Pro (Gemini). A general assistant, not a writing tool. Gemini was not in the 30-day benchmark, so it has no editing-time figure here — it is a price point only.
- $20 — Claude Pro / ChatGPT Plus. Higher limits, and for Claude stronger long-form coherence.
- $24 — Hypotenuse Starter (annual) / Copy.ai Chat (annual). Hypotenuse pricing · Copy.ai pricing.
- $25 per person — ChatGPT Team. Priced per seat, so this line multiplies with headcount.
- $29 — Copy.ai Chat / Hypotenuse Starter (monthly billing).
- $30 — Grammarly Premium (monthly). A steep step up from the annual price, worth it mainly for non-native English writers.
- $39–49 — Jasper Creator. $49 monthly, $39 annual. Scored 9/10 short-form with the joint-fastest editing time in our test. See Jasper pricing.
- $59–69 — Jasper Pro. $69 monthly, $59 annual.
- $79+ — Writesonic. Now an AI Search Visibility (GEO) platform at $79 / $199 / $399, no longer a general writing subscription.
- $100 / $200 — Claude Max. $200 — ChatGPT Pro. The high-volume ceilings.
One structural note: the cheapest tools here are general assistants with no templates, no SEO tools and no brand voice. If you need those features the ladder is not really $0-to-$79 — it is $7.50-to-$79, and the honest question becomes which workflow features are worth paying for.
The hidden cost: editing time
Here is the number almost every pricing comparison misses. Every tool in our 30-day benchmark was timed on editing, measured per finished piece with a timer. The spread is wide enough to reorder the entire price ladder:
| Tool | Editing time per piece | Editing cost per piece |
|---|---|---|
| Claude | ~8 min | $4.00 |
| Jasper | ~8 min | $4.00 |
| ChatGPT | ~10 min | $5.00 |
| Writesonic | ~12 min | $6.00 |
| Hypotenuse | ~14 min | $7.00 |
| Copy.ai | ~15 min | $7.50 |
| Rytr | ~22 min | $11.00 |
Grammarly is missing on purpose: Grammarly is the editing step. Our dataset measures how long each drafting tool's output took to edit — not how much a separate editor reduces the editing time of another tool's draft. Putting a number in that column would be inventing one.
The formula, so you can re-run it
The arithmetic is deliberately simple. One formula per piece, one for the month:
Worked example for Rytr, which is the tool this calculation flatters least:
And the same three steps for Jasper, the tool it flatters most:
What the assumptions buy you is an internally consistent comparison — the same rate and volume applied to every tool — which is enough to see which tools pay for themselves and which quietly cost more than they appear to.
The sharpest comparison in the dataset is Rytr versus Jasper: $7.00 per piece in extra editing, or $70 a month at 10 pieces — more than the $41.50 sticker gap between them. That is not an argument that Jasper is cheap. It is an argument that the sticker price is the wrong number to sort by.
Sticker price versus real monthly cost
Both halves together. Sticker prices are the verified September 2026 figures for each tool's entry paid tier (free tier where one exists and is genuinely usable); editing costs use the formula above at the assumed $30/hour rate and 10 pieces per month.
| Tool | Sticker / month | Editing min / piece | Editing cost / month | Real monthly cost |
|---|---|---|---|---|
| Claude | $0 (free tier) | ~8 | $40.00 | $40.00 |
| Jasper | $49.00 | ~8 | $40.00 | $89.00 |
| ChatGPT | $0 (free tier) | ~10 | $50.00 | $50.00 |
| Writesonic | $79.00 | ~12 | $60.00 | $139.00 |
| Hypotenuse | $24.00 | ~14 | $70.00 | $94.00 |
| Copy.ai | $29.00 | ~15 | $75.00 | $104.00 |
| Rytr | $7.50 | ~22 | $110.00 | $117.50 |
| Grammarly | $30.00 | — | — | $30.00 |
Read the last column rather than the second. Three things fall out of it:
- The cheapest sticker in the set becomes the second-most-expensive tool. Rytr's $7.50 per month becomes $117.50 once editing is priced in — above Copy.ai at $29 and well above Jasper at $49, behind only Writesonic. The per-piece price advantage survives; the monthly one mostly does not.
- The free tiers hold up. Claude at $40 and ChatGPT at $50 real monthly cost are the two cheapest drafting options on the table — Grammarly's $30 buys polish, not prose — and they are two of the three highest-scoring tools in the benchmark. Free is not a compromise on quality here; it is a compromise on workflow features.
- Writesonic is a different purchase. At $139 real monthly cost it is the most expensive line on the table by a wide margin. That is only defensible if you are buying GEO tracking, because the prose alone does not justify it — it scored below both free tiers.
Two caveats. If you use a paid tier of Claude or ChatGPT rather than the free tier, add $20/month to that row. And if your volume is not 10 pieces, every editing column scales linearly while the sticker column does not: at 30 pieces a month Rytr's real cost is $337.50 against Jasper's $169, and the two stop being close.
Tool-by-tool: what you actually pay
Claude — $0–20/mo, ~8 min editing
The best value line on this page. Claude scored 9/10 on both short-form and long-form, the top result in the set, with the joint-fastest ~8 minutes of editing. That is $40/month of real cost on the free tier at our assumed rate, $60 on Pro. What you do not get at any price is SEO tooling. See Claude pricing.
ChatGPT — $0–200/mo, ~10 min editing
Scored 8/10 in both categories with ~10 minutes of editing — $50/month real cost on the free tier. The paid ladder above it is long, and the honest read is that most writers do not need past Plus. ChatGPT Team is the one line that scales with headcount rather than usage.
Rytr — $7.50/mo (annual), ~22 min editing
The most instructive tool on this page. At $7.50 it is the cheapest paid tier anywhere in our test, and on short-form it earned a respectable 7/10. But ~22 minutes of editing per piece is the longest in the set, and at our assumed rate that is $110/month of editing — which makes it the second-most-expensive tool here in real terms despite having the lowest sticker price. If your volume is low and your pieces are short, the editing bill never arrives. If you are producing daily, it does. More detail in our Rytr review and the free plan breakdown.
Jasper — $39–69/mo, ~8 min editing
$49 monthly or $39 annual for Creator, with the cheapest editing time in the set at ~8 minutes. That produces an $89/month real cost — high in absolute terms, lower than both Rytr and Copy.ai, and the gap widens with volume. You are paying for brand-voice consistency and team workflow, not a quality jump: 9/10 short-form against Rytr's 7/10 is real, but not a 6.5× one.
Copy.ai — From $29/mo, ~15 min editing
No free tier, so real monthly cost starts at $104. It scored 7/10 short-form and 6/10 long-form with ~15 minutes of editing. The value here is go-to-market workflow rather than prose — a workflow software price with editing time attached. See Copy.ai pricing.
Hypotenuse — $24–29/mo, ~14 min editing
$24 annual or $29 monthly, ~14 minutes of editing, 7/10 short-form and 6/10 long-form. Real monthly cost lands at $94. The economics only work at catalogue scale where bulk product descriptions are the whole job. See Hypotenuse pricing.
Grammarly — ~$12–30/mo, no editing-time column
The one tool here priced as a second subscription rather than a first. At ~$12/month annual it is the cheapest paid line in the set, and the case is specific: sentence-level tone and fluency, particularly for non-native English writers. It does not generate, so it has no editing-time figure — and while it is the only tool here that could plausibly reduce another tool's editing column, our dataset does not measure that. We are not going to guess at it.
Writesonic — from $79/mo, ~12 min editing
The most expensive line in the benchmark. $79/month plus $60 of editing is $139 real monthly cost. What justifies it is native SEO tooling and GEO (AI-search visibility) tracking, which nothing else here has built in. If AI-search visibility is your explicit goal that is a product you can buy; if it is not, you are paying a premium for prose that scored no better than a free tier.
Annual versus monthly: what the discount is worth
Annual billing is where most vendors hide their real discount, and re-checking prices in September 2026 shows the size of it varies a lot by vendor:
| Tool | Monthly billing | Annual billing | Saved per month | Saved per year |
|---|---|---|---|---|
| Grammarly Premium | $30.00 | ~$12.00 | $18.00 (60%) | $216.00 |
| Jasper Creator | $49.00 | $39.00 | $10.00 (20%) | $120.00 |
| Copy.ai Chat | $29.00 | $24.00 | $5.00 (17%) | $60.00 |
| Hypotenuse Starter | $29.00 | $24.00 | $5.00 (17%) | $60.00 |
| Rytr Saver | — | $7.50 | — | $90.00/yr total |
The percentages are the monthly price minus the annual price, divided by the monthly price — Grammarly's is 18 ÷ 30 = 60%, Jasper's is 10 ÷ 49 = 20.4%, and the two $24 tiers are 5 ÷ 29 = 17.2%.
Two things to weigh. Size first: Grammarly's $216 annual saving is larger than the entire annual cost of most other tools here, which makes annual billing the obvious choice there if you have decided to buy at all. Risk second: an annual commitment locks you in for twelve months while model quality and pricing both move faster than that. For a first purchase, a month of monthly billing is cheap insurance; take the discount on renewal, once you know you are staying.
Annual billing also does not change editing time by a single minute — it shrinks the sticker column and leaves the larger column untouched. Jasper's $120 annual saving is real, but smaller than the $840 of annual editing cost its $7-per-piece advantage over Rytr represents at 10 pieces a month.
Which tier fits which scenario
Rather than a blanket answer, here is the scenario-based math from our tests:
- Student / light use: the $0 stack — a free tier plus Grammarly's free plan. Real cost is your editing time and nothing else. See best free tools.
- Solo freelancer, short-form volume: $7.50 (Rytr) or a free tier — not both, and not a third.
- Marketer publishing SEO content: ~$20 (ChatGPT Plus) for plain SEO writing, or Writesonic from $79/mo only if AI-search visibility is the explicit goal — the one scenario where that line is defensible.
- Team with brand-voice needs: $39–49 (Jasper). Consistency is what you are buying, and it is the only thing here that gets cheaper per piece as volume rises.
- Long-form professional: $20 (Claude Pro) for coherence, or Jasper if brand voice matters too.
- E-commerce catalogue: $24–29 (Hypotenuse), and only for bulk product copy. Below that, the editing bill exceeds the subscription.
The mistake that costs the most
The biggest money waster is not picking the wrong tool — it is subscribing to two tools that do the same job. In our test, running ChatGPT Plus and Rytr and Writesonic for the same writing tasks meant $106.50/month for work one tool could do: $20 + $7.50 + $79.
The discipline that keeps costs sane: one drafting tool plus one polish tool (Grammarly) at most. Everything past that is a workflow feature you have not justified yet. If you are weighing a specific pair, see Rytr vs Jasper or cheap AI writing tools.
Bottom line
The honest monthly cost of AI writing in 2026 is $0–$79 in sticker price, and roughly $40–$139 once editing time is priced in at our assumed $30/hour across an assumed 10 pieces a month. Editing time is what reorders the ladder: it turns the cheapest subscription in our test into the second-most-expensive tool in real terms.
The practical version: start on a free tier, add exactly one paid tool when volume or workflow demands it, and re-run the formula with your own hourly rate before committing to annual billing. It is three lines. It takes less time than reading another pricing page.
Roughly a coffee a month, no editing-time surprise
Rytr's Saver plan is the cheapest paid tier in our test at $7.50/mo on annual billing — best for short-form, and its free plan covers 10,000 characters a month if you want to test first.
Try Rytr Free →Frequently Asked Questions
How much do AI writing tools cost per month?
Verified September 2026 sticker prices: $0 for the ChatGPT, Claude and Gemini free tiers, $5 for ChatGPT Go, $7.50/mo for Rytr Saver on annual billing, about $12/mo for Grammarly Premium on annual billing, $19.99/mo for Google AI Pro, $20/mo for Claude Pro and ChatGPT Plus, $24/mo for Hypotenuse Starter and Copy.ai Chat on annual billing, $25 per person for ChatGPT Team, $29/mo for Copy.ai Chat and Hypotenuse Starter monthly, $30/mo for Grammarly Premium monthly, $39–49/mo for Jasper Creator depending on billing, $69/mo for Jasper Pro monthly, and from $79/mo for Writesonic.
What's the cheapest AI writing tool that works?
The free tiers of ChatGPT and Claude scored above every dedicated paid writing tool on raw prose in our 30-day benchmark, which makes them the strongest quality-per-dollar option. If you need a repeatable workflow, Rytr at $7.50/mo is the most budget-friendly paid tool we tested, and its free plan covers 10,000 characters a month.
Is Jasper worth the $49?
For brand-voice consistency and team workflow, yes. On short-form the $41.50/month gap versus Rytr mostly buys editing time and consistency rather than a large quality jump — Jasper scored 9/10 short-form against Rytr's 7/10, but needed about 8 minutes of editing per piece against Rytr's 22.
Can I use AI writing tools for free?
Yes. ChatGPT and Claude both have viable free tiers, Rytr's free plan covers 10,000 characters a month, and Grammarly's free plan handles basics. The limits, not the quality, are what push heavy users to pay.