Is the CLI open source?

Yes, the full toolkit including CLI is open source on GitHub.

How fast are translations?

Sub-second responses for most requests with 99.9% uptime SLA.

Developer teams shipping multilingual apps and websites who want to eliminate manual translation work.

Lingo.dev

Freemium🇺🇸🇺🇸 United StatesLow Burn

AI localization engine for instant multilingual software

Gen Ai

Overall score

Heat score

Claim Tool Suggest Edits

Pricing

Developer$0/month

EnterpriseCustom

Purchase Subscription

Technical Specs

Inputs

Source Text, JSON Files, YAML Files, PO Files, Markdown Documents, Code Changes

Outputs

Localized Text, Translated Files, Pull Requests, Webhooks Notifications, Quality Reports

AI Type

Translation

Model Architecture

Custom/Proprietary

Daily Prompts

N/A

Context Length

N/A

Output Quality

Accuracy

92%

Content

90%

Reasoning

85%

Company Profile

Company

Lingo.dev

Founded

2024

San Francisco, California, USA

Employees

Total Raised / Total Funding

$4.2M

Revenue

N/A

Valuation

N/A

ARR

N/A

CEO

Max Prilutskiy

Overview

Estimated Paid Users

N/A

Current estimate

Total Earnings Till Date

N/A

+13.87% from last month

Market Share

N/A

Current share

Average Session

N/A

Per active user

Hallucination Rate

Model quality signal

Growth Rate

+9.43%

Monthly active users

Burn Rate

N/A

Total expenses / years active

Paid User Gain

+41.79%

Monthly paid user trend

No demo video available yet.

Platforms

Web App

Available

Profit Analysis

-$3.4M

Total Loss

$4.1M

Total Profit

Performance Metrics

Accuracy

92%

Context

90%

Reasoning

85%

Safety

85%

Benchmarks

No benchmark scores available.

Lingo.dev Models

Lingo.dev Localization Engine v1.0

Type: Other

Description: Flagship stateful translation API with per-locale model selection and quality scoring

Architecture: Custom/Proprietary

Lingo React Compiler

Type: Other

Description: Alpha build-time middleware for multilingual React apps

Architecture: Custom/Proprietary

Funding Rounds & Investors

Total Funding

$4.2M

Rounds

Seed

$4.2M

Feb 2025

Led by Initialized Capital with YC and angel participation; source: TechCrunch 2025-02-18

Founders/Team

Max Prilutskiy

Co-Founder & CEO

Veronica Prilutskaya

Co-Founder & CPO

Direct competitors

No direct competitors available.

Change Log / Major Updates

2025 · Aug 1

Build-time localization for React apps without modifying source code.

2026 · Mar 8

Major release with engine configuration, model selection, MCP tools, and improved localization capabilities.

2026 · Mar 12

Migrated to unified API endpoints with X-API-Key auth for better security and performance.

Compliance, Integrations & Support

Industry: Automation

Compliances: Not specified

Integrations: GitHub Action, CLI, React Compiler, API, Jira, Webhooks

Support:discord, community forum, enterprise support, email

Target audience: Developers, Software Engineers, Frontend Teams, Product Managers, Startups, Enterprises, Open Source Contributors

Supported languages: English, Spanish, French, German, Japanese, Arabic, Chinese, Korean, Russian, Italian

Lingo.dev Acquisitions

No acquisition records available.

Reviews & Rating

0 reviews

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Social Feed

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More About Lingo.dev

When Max Prilutskiy and Veronica Prilutskaya built the first prototype at a Cornell hackathon in 2023, they weren't chasing the next hot AI trend—they were solving a problem they'd lived with as repeat founders: localization is universally hated. What started as a weekend project to auto-generate authentic translations from code changes evolved into Lingo.dev, the open-source AI localization engine that rebranded from Replexica and raised $4.2 million from Initialized Capital and YC in early 2025.

Unlike traditional agencies or simple machine translation, Lingo.dev turns any LLM into a stateful, context-aware translation API with glossaries, brand voice, and quality scoring. It plugs into Git workflows, CI/CD, and React apps via compiler, producing pull requests with translations that actually sound native. Trusted by Mistral AI and Cal.com, it has already translated over 100 million words while maintaining 99.9% uptime.

5,395 GitHub stars and growing
3,951 Discord community members
Seamless integration with existing developer workflows

Lingo.dev FAQ's

Does Lingo.dev support my tech stack?

Yes, it works with JSON, YAML, PO, Markdown, React, and most modern frameworks via CLI, API, or GitHub Actions.

Is there a free tier?

Yes, the Developer plan is completely free with pass-through LLM costs and limited infrastructure usage.

How does it handle brand-specific terminology?

Through customizable glossaries and brand voice rules enforced on every translation request.

Can I bring my own LLM?

Absolutely—use any LLM or the built-in Lingo.dev Localization Engine with 300+ models.

What makes Lingo.dev different from Google Translate or DeepL?

It's designed for software localization with context from your codebase, UI placement, and product-specific knowledge rather than generic text translation.