Sapling

Sapling is a language model toolkit that sits on top of enterprise workspaces and messaging platforms to provide real-time writing suggestions, with browser extensions, Google Docs, Outlook and Word integrations, plus an API and a documented developer path.

Positioning as a toolkit for businesses and developers rather than as a consumer grammar checker is the meaningful distinction. The named integration targets are workspace and messaging platforms, which points at customer-facing communication rather than document authoring.

That focus makes sense once you consider where writing errors actually cost money. A typo in an internal document is embarrassing; a poorly worded reply from a support agent to a frustrated customer damages a relationship that took effort to build. Support and success teams write hundreds of short messages a day under time pressure, which is exactly the condition in which quality drops and nobody has time to proofread.

Sapling publishes capabilities around customer experience, efficiency and enablement, which is the vocabulary of contact centre operations rather than of writing tools, and it explains the shape of the product.

The API being a separately priced, usage-based plan rather than a feature of the subscription is the right structure for a developer-facing capability, since a team embedding suggestions in its own application has a completely different consumption pattern from seat-based users.

Pricing is published openly. A free tier costs $0 per month and requires no credit card, with a one-month trial of Sapling Pro. Pro is $25 per month, or $12 per month billed annually, for individuals. Enterprise starts at 10 seats at $15 per seat per month and adds self-hosting, custom integrations and single sign-on with SCIM. The API is a separate usage-based plan with a $5 minimum.