GrammarBot review
A focused English grammar API with structured edits and usage-based pricing.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
GrammarBot is a cloud API for developers adding grammar, spelling, and punctuation correction to applications and services. It accepts text and returns corrected text alongside structured edit information, including positions, replacements, and error categories. The product is aimed at small, mid-market, and enterprise teams that need correction inside their own software rather than a standalone writing application. Its documented language parameter is English, making it a focused option for English-language workflows.
Pricing is usage-based rather than per user or per month. The Free plan provides the first-generation grammar and spelling checker. Neural plans charge $0.02 per 1,000 characters for usage below 3 million characters, $0.015 per 1,000 characters from 3 million to 12 million characters, and $0.01 per 1,000 characters from 12 million to 30 million characters. Usage above 30 million characters has custom pricing. The Neural API provides grammar and spelling correction, while the API also supports JSON requests, automatic correction, optional XML-formatted corrections, usage limits, and rate limiting.
GrammarBot fits products that need an API-first correction layer and the ability to apply or display precise edits programmatically. Its structured offsets and replacements are particularly relevant when an application needs to mark changes or build its own editing experience. Email support and documentation support implementation, while access is available through API keys and RapidAPI for some services. Choose GrammarBot when embedded English correction, structured responses, and character-based pricing are the priority. Choose another grammar checker when users need browser, desktop, or mobile access, style suggestions, tone detection, or a broader language offering.
GrammarBot pros and cons
- Where it wins
- Structured edits include offsets, replacements, and error categories
- Automatic correction plus corrected text in API responses
- Usage-based Neural pricing starts at $0.01 per 1,000 characters
- Where it doesn't
- Focused on English API use
- No browser extension, desktop app, or mobile app
- No style suggestions, tone detection, or listed integrations
GrammarBot fact sheet, pricing and score →
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