Fast, Accurate Grammar Check API & SDK
Enable powerful real-time grammar and style checks within your application using the Linguix REST API & SDK. Switch from Grammarly SDK!
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Introducing the Linguix SDK:
Faster, Easier Integration
The Linguix SDK is the easiest way to integrate our AI-powered writing assistance into your app. Instead of managing API calls manually, simply plug in our SDK and start offering instant grammar and style improvements with minimal development effort.
Plug-and-Play
No need to write complex API logic—just integrate and go.
Multilingual Support
Works in 30+ languages, including English, Spanish, French, German, Italian, and more.
Customizable UI
Match the grammar check experience to your brand’s design.
Optimized Performance
Reduce API calls while maintaining high-speed corrections.
Flexible API & SDK Pricing
Choose the plan that fits your needs. If your usage exceeds the limit, additional characters are charged at $0.0025 per 1,000 characters.
Free Plan
$0 / m
Usage: Up to 1,000,000 characters/month
Features: Basic grammar and spell checking
Support: Community support
Starter Plan
$99 / m
Usage: Up to 10,000,000 characters/month
Features: Standard grammar and style checks in 7 languages
Support: Email support
Professional Plan
$499 / m
Usage: Up to 50,000,000 characters/month
Features: Advanced grammar, style, and tone suggestions
Support: Priority email support
Business Plan
$1,499 / m
Usage: Up to 150,000,000 characters/month
Features: Comprehensive writing tools, custom rules, advanced tone/style suggestions
Support: Dedicated account manager
Enterprise Plan
Custom Pricing
Usage: Over 150,000,000 characters/month
Features: Tailored solutions to meet specific enterprise needs
Support: 24/7 dedicated support
Why Choose Linguix API & SDK?
- 🚀 Boost User Engagement – Apps integrating Linguix experience up to 340% higher retention and 23% ARPS growth.
- 🎯 Real-Time Assistance – Users can correct grammar, style, and tone instantly within your app.
- 🌎 Multilingual Support – Check grammar in 30+ languages, helping global users write with confidence.
- 🔒 Enterprise-Grade Security – Your data stays private with our secure and compliant infrastructure.
- 📊 Proven Results – 94.2% increase in feature usage after API implementation.
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Check API response example
Visit our help page to see API response examples and understand what data you will receive.
API implementation case study
With the Linguix API embedded in your application, your end users can create more effective content more efficiently. This will help you to elevate the UX of your app and earn more.
See how it works for yourself: download our free API implementation case study to review the experience of developers of the text expander app. They've implemented grammar check and rewriting using our technology and got great results!
Download case study
See how it works for yourself: download our free API implementation case study to review the experience of developers of the text expander app. They've implemented grammar check and rewriting using our technology and got great results!
Flexible Integration for Any Workflow
With Linguix API embedded in your application, your users can choose the workflow that best fits their needs, whether real-time grammar checks or file-based editing. This flexibility ensures seamless integration and enhances user experience across platforms, allowing users to write and correct content effortlessly.
Maximize Your App’s Potential with Seamless Writing Assistance
Linguix’s multilingual grammar check API offers extensive writing assistance, ensuring that both casual and professional communication is polished and precise. By integrating features such as custom dictionaries, contextual spelling, and tone enhancements, you provide users with the tools to create clearer, more effective content tailored to their specific needs.
Whether for e-learning platforms or corporate communications, Linguix elevates the user experience by delivering seamless grammar and style improvements directly within your app. This allows your users to create consistent, high-quality content without needing to leave the platform or switch between tools.
Whether for e-learning platforms or corporate communications, Linguix elevates the user experience by delivering seamless grammar and style improvements directly within your app. This allows your users to create consistent, high-quality content without needing to leave the platform or switch between tools.
Linguix Writing Assistant API
Send us a message describing your product, an estimated monthly volume of processed text-based content, and your API budget. This will help us to craft the custom terms that suit your needs best.
Frequently Asked Questions
Who is the Linguix Grammar Check API for?
Our grammar checker APIs are versatile and can be applied to a variety of use cases.
Here are some ways our clients use Linguix API:
- Automated grading and feedback for student essays.
- Embedding grammar checking into text editors within apps.
- Enhancing the quality of copy-editing services.
- Scanning websites for grammar and style issues.
- Providing grammar feedback for learners of multiple languages.
- Verifying grammar in translated text to ensure accuracy.
Why choose Linguix Grammar Checker API?
- ✅ Multilingual Support: Check grammar and spelling in multiple languages.
- ⌛ AI-Powered: Seamlessly integrates via our RESTful API.
- 🔐 Data Privacy: Safe, secure, and trusted.
- ✍ Advanced Features: Supports custom dictionaries, tone/style enhancements, and subject-specific corrections.
Is there a free trial?
You can try our API and SDK for free using our free plan.
Are there any additional costs to start using Linguix API?
No, there are no setup fees. You can get started without any additional costs.
Can I integrate real-time grammar checking into my text editor?
Absolutely! Integrating real-time grammar checking into a text editor is one of the most common use cases. With Linguix, you can integrate grammar and spell-checking into your editor within minutes. Our component allows easy customization to match your brand's design, and you can even add keyboard shortcuts for a seamless user experience.