Sapling

Sapling is a language model toolkit that packages writing and text analysis functions as an API, an SDK and a set of ready made integrations. A single HTTP request returns grammar and spelling edits, autocomplete suggestions, paraphrases, sentiment analysis or an AI detection score, and client libraries for Python and JavaScript wrap the same endpoints. Alongside the developer surface, Sapling ships a browser extension and editor components that sit on top of the workspaces and messaging platforms a team already uses and offer suggestions as people type. The product is aimed at developers embedding language features in their own applications and at customer facing teams that write at volume. Grammar checking comes with quality scoring and error reports, the AI detector returns an overall score plus per sentence predictions, and a shared snippet library supports text expansion macros across web applications. Integrations cover ServiceNow, Salesforce, Zendesk, Amazon Connect and Twilio Flex, and an MCP server lets Claude and other MCP clients call the same tools. Enterprise deployments add private cloud hosting, TLS and AES 256 encryption, PII redaction, single sign on, SCIM, multi factor authentication and a self hosted option. Pricing is published. The Free plan is $0 per month with basic suggestions, 20 snippets and AI detector checks up to 2,000 characters. Pro is $25 per month, or $12 per month on annual billing, and raises detector checks to 100,000 characters per check. The API is a separate usage based plan with a one time $5 minimum. Enterprise is custom, starting at 10 seats at $15 per seat per month. Registering starts a free one month trial of Pro. The team's work came out of the Berkeley and Stanford AI labs, and the company is backed by Y Combinator.