Sapling

Sapling

A language model toolkit for individuals, teams, and developers: APIs for grammar checking, autocomplete, rephrasing, AI detection and more, plus browser and office suite plugins.

freemium
Last Updated 9/12/2026

About Sapling

Sapling offers two ways to use the product: regular users can install a browser extension or Office integration to get grammar correction, completion suggestions, and AI detection results while writing; developers can use the REST API or the Python and JavaScript client libraries to integrate language capabilities such as grammar checking, autocomplete, rephrasing, tone analysis, text summarization, and AI detection into their own applications. The official website claims its grammar checker finds 60% more language quality issues than other checking tools and provides quality scores and error reports; this is a vendor marketing claim. Sapling runs on Amazon Web Services, supports TLS encryption in transit and AES-256 encryption at rest, is SOC 2 Type II certified and GDPR compliant, and can help meet HIPAA and PCI compliance requirements. Enterprise customers also get audit logs, role-based access control, single sign-on, as well as customized storage and data retention options and self-hosted deployment.

Best for

Individual users who want real-time language quality suggestions in their everyday writing
Developers who want to integrate grammar, autocomplete, rephrasing, AI detection and other language capabilities into their own applications
Enterprise customers needing team-level governance, data analytics, and security compliance

Best use cases

Teams improving writing quality consistently across enterprise workspaces or instant messaging platforms

Getting real-time grammar correction and completion suggestions while writing in a browser

Checking whether a passage of text was generated by AI, down to the sentence level

Integrating grammar checking, rephrasing, tone analysis, or summarization into your own application

Organizations with HIPAA or PCI compliance needs that require enterprise-grade security controls

Features

Grammar and spelling checking

Integrate deep learning-powered grammar and spelling checking into any application via the SDK or the grammar checking API.

Autocomplete

Predict the next few characters or words to be typed, helping users reduce typing time.

AI detection

Score text for the likelihood of being AI-generated, with granularity down to the document, sentence, and token level.

Rephrase

Rewrite text in a specified style.

Tone analysis

Check the tone of a message.

Text summarization

Summarize longer documents into shorter, easier-to-read versions.

Pros

  • Broad capability coverage: grammar checking, autocomplete, rephrasing, tone analysis, AI detection and more are all available through a single API
  • Python and JavaScript client libraries are provided, making integration easy
  • A free plan and a 1-month Pro trial are available, and no credit card is required to sign up
  • Security and compliance information is fairly complete: SOC 2 Type II, GDPR, plus support for HIPAA and PCI compliance requirements
  • Enterprise accounts include audit logs, RBAC, single sign-on, and a self-hosted deployment option

Pricing Plans

Free

$0month
  • No credit card required to sign up, and you also get a free 1-month trial of Sapling Pro

Pro

$25month
  • Advanced writing assistance
  • AI detection checks, up to 100,000 characters each

Enterprise

$15/seat/monthmonth (starting at 10 seats, per seat)
  • Advanced writing and AI detection
  • Team governance and data analytics
  • Support

API

MeteredUsage-based billing, settled monthly
  • Usage-based language and AI detection API

* Pricing information is for reference only. Please refer to the latest announcement on Sapling's official website.

FAQ

You can sign up for a free account to get started; upgrading to the Pro or Enterprise plan unlocks advanced writing suggestions and longer AI detection checks.
The free trial limit is 50,000 characters per 24 hours and 250,000 characters per month; after subscribing it is 10 million characters per 24 hours and 25 million characters per month. In both cases you can contact the vendor to request higher limits.
Sapling is SOC 2 Type II certified and GDPR compliant, and supports HIPAA and PCI compliance requirements. You can contact the vendor for detailed reports.

Tool Information

DeveloperSapling
Release Date9/12/2026
Pricingfreemium