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Linguix vs Sapling

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Linguix starts at $30, Sapling at $12. Both have a free tier. Both ship a public API.

LinguixGrammar and style checking in the browser across seven languagesSaplingGrammar, autocomplete and snippet suggestions for customer-facing teams, plus a language API with AI detection

Side by side

FactLinguixSapling
CategoryGrammar & ProofreadingGrammar & Proofreading
Pricing modelFreemiumFreemium
Starts at$30 month$12 month
Public APIYesYes
PlatformsWeb, Chrome Ext, Android, APIWeb, Chrome Ext, API
CompanyTextly Inc.Sapling Intelligence
Launched2018—
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

Linguix

A cheaper Grammarly substitute whose two genuinely interesting features are not what it leads with: non-English checking and a grammar API you can embed in your own editor. As a pure English writing assistant it trails the market leaders.

Pros

  • multi-language checking that most English-first rivals do not match
  • documented API with a free 1M-character tier for evaluation
  • text-expansion shortcuts bundled instead of sold as a separate tool
  • two-year plan brings the effective price down to about $10/month

Cons

  • a permanent 50%-off banner makes the real list price hard to pin down
  • team and business pricing is not published anywhere on the site
  • very small company — headcount reported in the low single digits in 2026
  • English suggestion quality does not match Grammarly or LanguageTool Premium

Sapling

Think of it as a grammar checker rebuilt for support queues: the payoff is faster replies via snippets and autocomplete, plus an API you can build product features on. It is less consumer-polished than the big-name checkers, and the better models sit behind Pro and Enterprise.

Pros

  • Snippets and autocomplete target measurable response-time gains, not just typo fixes
  • Real developer surface: REST API, Python/JS SDKs and an MCP server
  • Annual Pro at $12/month is inexpensive for the category
  • On-premise option is rare among writing assistants

Cons

  • Suggestion polish and UI trail Grammarly's consumer experience
  • AI-detection results are probabilistic and unsuitable as sole proof

Which one fits

Choose Linguix if you need

  • writers working in French, German, Spanish, Portuguese, Italian or Polish
  • developers embedding grammar checking into their own product via API
  • teams enforcing one style guide across support and sales writing
  • heavy users of canned replies and text snippets

Choose Sapling if you need

  • Support and sales teams answering high message volumes inside helpdesks and CRMs
  • Developers embedding grammar checking or AI detection through the API and SDKs
  • Organizations that need on-premise or self-hosted deployment for compliance

More comparisons

All Linguix alternatives →Browse all Grammar & Proofreading →