Lingo.dev
Open-source CLI/compiler that wires an LLM into your translation pipeline, so new strings get drafted automatically instead of sitting in a spreadsheet for a translator.
What is Lingo.dev?
Lingo.dev is an open-source CLI and compiler that automates translation using an LLM, plugging directly into a codebase's existing i18n setup. Instead of exporting strings to a spreadsheet or translation service and waiting for a human translator to send them back, new or changed strings get machine-translated as part of the build or CI pipeline, with the option to route specific languages or content through human review later.
Key features
- CLI that detects new or changed strings and translates them automatically via LLM
- Compiler mode that can translate at build time without touching the source files directly
- Works with existing i18n formats (JSON, YAML, common framework conventions) rather than requiring a proprietary format
- Open source, so the translation pipeline itself is inspectable and self-hostable
- Git-based workflow: translations show up as diffs in version control like any other code change
Who it's for
Small teams and solo builders who want translations to keep pace with a fast-shipping codebase without paying for or waiting on a human translation service for every string. Products with legal, medical, or brand-sensitive copy that needs guaranteed human accuracy should treat LLM output as a first draft, not a final one.
Pricing
Free and open source for the CLI itself; a hosted/managed tier exists for teams that want it running without self-hosting.