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No. 4 of 88 ·Grammar checkers

Sapling

Web · Windows · Self-hosted · API · Extension · paid plans from $5/mo

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Freedom report

Two barsScore 7.9

  • Free tierA free tier is on its own pricing page
  • Open codeNo open-source code on record
  • Runs widely2 of 6 device platforms
  • DocumentedPlans, terms and facts published

Sapling combines writing assistance for teams with developer tools for adding language model-powered functions to applications. Writing features include grammar and spelling corrections, autocomplete, rephrasing, tone and sentiment checks, and AI content detection. Style suggestions and tone detection are available, with support for 14 languages. Developers can use HTTP API endpoints and SDK components, including Python and JavaScript client libraries. Sapling lists 73 integration guides, with examples for Zendesk, Salesforce, Slack, Google Docs, Microsoft Word and browser extensions. It is available on the web, through browser extensions and Windows, via API, and in self-hosted deployments. Sapling says it uses TLS encryption in transit and AES-256 encryption at rest, and describes GDPR compliance and SOC 2 Type II certification. Enterprise options include audit logs, role-based access, single sign-on and custom data retention. The free plan includes AI detector limits. Paid writing assistance starts at 12.00 USD per user per month billed annually, and a 30-day trial is listed. API trials have a character limit and expire after one month.

Who it is for

Sapling may suit teams seeking writing assistance and developers adding language model features through APIs or SDKs. Enterprise teams can consider its listed access controls, self-hosting and retention options.

What is good

  • Writing tools include grammar, spelling and rephrasing
  • Supports 14 languages
  • Offers Python and JavaScript client libraries
  • Enterprise options include audit logs and single sign-on

What to know first

  • Free plan limits AI detector checks, files and snippets
  • API trial has a character limit and expires after one month
  • Some API and self-hosted pricing requires contacting sales

Verdict

Sapling brings team writing tools together with developer APIs, integrations and enterprise deployment options. Review the free-plan limits and the distinct API and writing-assistance pricing details before choosing a plan.

Sapling plans and pricing

All plans
Free Free billed monthly 2,000 AI detector characters per check · 5 AI detector files per batch · 20 snippets sapling.ai · 20 Sept 2026
Pro $25/mo Annual ($12 / mon) Advanced writing assistance · AI detector checks up to 100,000 characters per check · 10 files per AI detector batch · Unlimited snippets sapling.ai · 2 Oct 2026
Pro $144/yr $144.00 per year (= $12.00/month, billed annually) 100,000 AI detector characters per check · 10 AI detector files per batch · Unlimited snippets sapling.ai · 5 Oct 2026
Enterprise $15/mo Starts at 10 seats; pricing varies by seat count and contract duration Advanced writing and AI detection · Team controls · Analytics · Support · 100,000 characters per detector check sapling.ai · 2 Oct 2026
API $5/mo One-time $5 minimum Usage-based language APIs · AI detection APIs · Developer access sapling.ai · 20 Sept 2026
Free Not published Basic writing assistance · AI detector checks up to 2,000 characters per check · 5 files per AI detector batch · 20 snippets sapling.ai · 2 Oct 2026

Compared on grammar checkers

Free plan
Yes
Browser extension
Yes

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