Pricing
Instant Grammar pricing
As instant-grammar.com lists them, read 21 Sept 2026. The maker's own page has the final word.
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Windows 10 or later | Free |
| Instant Grammar | Free download · no subscription · requires your own OpenAI API key; OpenAI usage billed separately | Free |
From instant-grammar.com.