App Localization

Lingo.dev

AI-powered localization platform — configure translation engines with your glossary and brand voice, then call them via API.

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lingo.dev

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Quick facts
What is it	AI-powered localization platform — configure translation engines with your glossary and brand voice, then call them via API.
Pricing	Paid — from $99/mo
Free tier	Yes
Platform	Web Application
API	Yes
Best for	translating and localizing software UI and content, maintaining consistent product terminology across multiple languages

Data updated Aug. 1, 2026

What does Lingo.dev do?

Lingo.dev is a platform for engineering teams to handle software localization. It moves translation from an external vendor process to an internal, configurable piece of infrastructure. You create a 'localization engine' that holds your product's glossary, defines the brand voice for each language, and sets up a chain of AI translation models. Once configured, you call this engine from your code, command line, or build system to translate text. The engine remembers your rules, so terms like 'provider' or 'dashboard' are translated the same way every time, across every release.

The tool uses a method called Retrieval Augmented Localization (RAL). Instead of sending a text string to an AI model in isolation, it first finds relevant terms from your glossary and injects that context. This significantly reduces errors and stops terminology from drifting. The process involves multiple steps: an AI refines the source text, enriches it with context, performs the translation, and then another AI reviews the quality. You get scores for fluency and accuracy, and for high-stakes content, you can trigger a human review step automatically.

It's built for development teams that ship products in multiple languages. If you're tired of managing spreadsheets of terms, coordinating with translation agencies, and finding inconsistent translations after each update, Lingo.dev automates that pipeline. It gives you a consistent, measurable way to handle localization as part of your development workflow, not as a separate, messy chore.

App Localization Developer Tools LLM

#ai translation#brand voice#developer api#glossary-management#llm#localization#retrieval augmented generation

Key features

What makes it stand out

Stateful translation engines that persist glossary and brand voice across requests

Retrieval Augmented Localization (RAL) to inject context and prevent terminology drift

Multi-step pipeline with source refinement, LLM translation, and automated quality scoring

Flexible integration via backend API, CLI, CI/CD, or MCP (Model Context Protocol)

Cross-model quality evaluation and optional human review for critical content

Who is Lingo.dev for?

Who benefits most from this tool

translating and localizing software UI and content

maintaining consistent product terminology across multiple languages

automating translation workflows within CI/CD pipelines

Pricing

Free tier available — start without a credit card

Sandbox

Free

100000 tokens/day throughput
0.5 engine cost
2 infrastructure cost
Unlimited engines
Unlimited seats
Unlimited glossary, brand voice, instructions
3 AI reviewers
GitHub, GitLab, Bitbucket integrations
7 days data retention
Sync + Async API
Management API / MCP
Webhooks
Community support

Production

$99.0/month

5000000 tokens/day throughput
0.5 engine cost
2 infrastructure cost
Unlimited engines
Unlimited seats
Unlimited glossary, brand voice, instructions
3 AI reviewers
GitHub, GitLab, Bitbucket integrations
30 days data retention
Sync + Async API
Management API / MCP
Webhooks
Email support

Enterprise

Custom

Unlimited throughput
Unlimited engines
Unlimited seats
Unlimited glossary, brand voice, instructions
Unlimited AI reviewers
All integrations + Jira
Custom data retention
Sync + Async API
Management API / MCP
Webhooks
Human post-editing by qualified translators
Dedicated Slack
Dedicated account manager
SOC 2 Type II
SSO
BYOK
Data residency (EU/US)
99.9% Uptime SLA
Audit logs

Gallery

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