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Lingo.dev

AI localization engine for software and docs

Lingo.dev is a Y Combinator F24-backed AI localization engine that automates translation of software interfaces and technical documentation into multiple languages while maintaining technical context. It preserves code variables, formatting tokens, and technical terminology that generic translation tools mangle, solving the global reach problem for developer-facing products and documentation.

About Lingo.dev

Lingo.dev specializes in localizing software and technical documentation where generic translation tools fail. The AI engine understands that strings like '{count} items remaining' contain code variables that must be preserved, that technical terms like 'pull request' or 'deployment' have specific meanings in developer contexts, and that formatting tokens in different frameworks need special handling during translation.

The platform automates the translation workflow from string extraction through translation to integration back into the codebase. It supports common localization formats including JSON, YAML, PO files, and framework-specific formats for React, Vue, and mobile platforms. Translation memory ensures consistency across the project, and context-aware AI produces translations that read naturally rather than literally.

As a Y Combinator F24 company, Lingo.dev launched successfully on Product Hunt in early 2025 and has been actively scaling its platform. Paid pricing is designed for software teams that need to maintain multilingual products, with the platform handling the technical complexity of localization so developers can focus on building features.

Pricing & Platform Specs

Pricing Summary

100% open-source under the MIT license. Free to use locally via CLI with your own LLM API keys (OpenAI, Anthropic, Google Gemini, Ollama). Managed cloud platform offers pay-as-you-go billing with 0% LLM markup, infrastructure starting from $2/MTok, free developer starter credits, and custom enterprise agreements.

full pricing breakdown →

Supported Platforms

JSON, YAML, React, Vue, iOS, Android, PO files

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Sources & verification

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FAQ

What is Lingo.dev?

Lingo.dev is a Y Combinator F24-backed AI localization engine that automates translation of software interfaces and technical documentation into multiple languages while maintaining technical context. It preserves code variables, formatting tokens, and technical terminology that generic translation tools mangle, solving the global reach problem for developer-facing products and documentation.

Is Lingo.dev free?

Yes — Lingo.dev is open source and free to use. 100% open-source under the MIT license. Free to use locally via CLI with your own LLM API keys (OpenAI, Anthropic, Google Gemini, Ollama). Managed cloud platform offers pay-as-you-go billing with 0% LLM markup, infrastructure starting from $2/MTok, free developer starter credits, and custom enterprise agreements.

Is Lingo.dev open source?

Yes — Lingo.dev is open source.

Is Lingo.dev still maintained?

Yes — Lingo.dev is active. Its listing was last verified on September 6, 2026.

What are the best Lingo.dev alternatives?

The first editor-selected Lingo.dev alternatives are Emdash, Relume, Conductor.build.