Wordtune Premium
Sentence rewriting delivered through a browser extension, where the unit of work is small enough that essentially the whole subscription is the interface rather than the generation.
- Vendor
- Wordtune (AI21 Labs)
- Category
- Writing
- Tier
- Unlimited
- Price / month
- $19.99
- Est. API cost
- $0.43
- Est. markup
- 46×
- Price checked
- 18 Sept 2026
- Verification
- verified
What the price actually is
$19.99/month on the Unlimited tier, billed monthly. Annual billing is advertised at $9.99/month, which halves the multiple below. A free tier with a daily rewrite cap exists and is the comparison most readers should be making.
The usage this is priced against
150 sentence rewrites a month — the tone and length adjustments the product is bought for — at roughly 600 input and 600 output tokens each, on a small fast model.
Someone using it half as much sees double the multiple. The assumption is the argument — if you disagree with it, the number below is not about you. Change it in the calculator.
The cost math, in full
Estimated monthly inference cost
Small fast text model at $0.80 / 1M input tokens · 150 rewrites; the unit of work is a sentence, so both sides are short
Small fast text model at $4.00 / 1M output tokens
Rates come from a dated rate card of representative published API prices, not from the vendor. Nobody outside these companies knows what they actually pay; volume discounts and in-house serving both push real costs below these figures, which makes every multiple here a floor rather than a ceiling.
Why this verdict, not the number
The distinguishing feature of this category is how little inference a rewrite actually takes: a sentence in, a few sentences out, on a model that does not need to be large. That makes the gap between price and token cost wider here than almost anywhere else in the directory. The extension is genuinely convenient and the vendor has real language-model research behind it, but what a Premium subscriber is buying at the margin is the button in the text box.
What the price buys besides tokens
- UX craft
- Distribution
Rewriting where you are already typing, without a copy-paste round trip, is the product. The parent company does train its own models, which is more than most tools in this bracket can say, though the rewrite itself does not need them.
What you lose if you leave
In-place rewriting inside any text field. For someone who rewrites constantly, removing the round trip is worth something real.
The honest cheaper path
The free tier covers light use. Beyond that, any assistant subscription rewrites sentences on request, and with an API key the estimated monthly token cost at this volume is well under a dollar.
Recompute it for yourself
Recompute this for your own usage
Scaling assumes your usage has the same shape as ours, just more or less of it. If your mix is different — far more output than input, say — the estimate drifts. It is an estimate either way.
Where every number came from
- pricingWordtune pricing
- rate-cardOpenAI API pricing
- rateRate card entry: frontier-small
Price recorded 18 Sept 2026 · entry last reviewed 18 Sept 2026. Think something here is wrong? File a correction — we publish them, including the ones that embarrass us.