Lexicon v0.5.14

Lexicon v0.5.14

Privacy-first grammar and AI writing assistant. Runs locally on your computer; the local model downloads on first use.

Lexicon v0.5.14

• Tier 1 (5 Minutes Idle): Unloads LLM model weights from RAM (~1.4 GB freed).
• Tier 2 (15 Minutes Idle): Terminates the LanguageTool JVM (java.exe) (~400–700 MB freed).
• Tier 3 (30 Minutes Idle): Shuts down the sidecar process (lexicon-backend.exe).
• Resuming writing at any time transparently re-engages the required tier on demand.

Downloads

• Windows x64: 64-bit Intel/AMD Windows
• Windows ARM64: Windows on ARM; proofreading is supported, but the optional native AI engine is not bundled
• Windows x86: legacy 32-bit Windows; proofreading is supported, but the optional native AI engine is not bundled
• macOS Intel: Intel Macs
• macOS Apple Silicon: M-series Macs

macOS builds are unsigned. On first open, right-click the app and choose Open, or run:
xattr -dr com.apple.quarantine /Applications/Lexicon.app

On first launch the app downloads the local AI model (~1.4 GB for the 2B tier). Proofreading works immediately without it.

Lexicon checks for updates in the app. Downloaded models and app data are kept outside the installation directory.