Smartling
Enterprise translation management system with AI-powered localization at scale
About Smartling
Smartling is an enterprise translation management system (TMS) that combines Neural Machine Translation, AI-powered LLM translation, and human linguist services into a unified localization platform. Its AI Hub provides access to 20+ MT and LLM engines including DeepL, Google Translate, Amazon Translate, and OpenAI, with proprietary AutoSelect technology that picks the best engine per language pair. The platform features RAG-powered prompt tooling for brand-consistent translations, an AI Post-Editing Agent for automated quality improvement, and an LQA Suite for systematic translation quality assessment. Trusted by 100+ global brands and recognized as the #1 Leader for Language-Oriented TMS by CSA Research, Smartling supports 450+ languages with per-word pricing that scales from machine translation at $0.0075/word to full human translation at $0.20/word.
Pros & Cons
Pros
- Industry-leading AI Hub with 20+ MT and LLM engines and automatic best-engine selection per language pair
- Per-word pricing model means you only pay for what you translate, with no upfront platform fees on Core
- RAG-powered translations leverage your existing glossaries and translation memory for brand consistency
- AI Post-Editing Agent automates quality improvement, reducing need for manual post-editing
- Supports 450+ languages with instant machine translation and hallucination mitigation
- Recognized #1 Leader for Language-Oriented TMS by CSA Research and top-rated on G2
Cons
- Enterprise plan pricing is not transparent and requires contacting sales for a custom quote
- Per-word costs can add up quickly for high-volume translation needs across many languages
- Core plan has limited features including capped translation memory at 180 days
- Steep learning curve for setting up advanced workflows and integrations
- No mid-tier plan between free Core and custom Enterprise makes it hard for growing teams to budget
Key Features
AI Hub with 20+ Engines
Centralized hub for managing Neural MT and LLM translation providers including DeepL, Google Translate, Amazon Translate, OpenAI, Azure AI, and more with customizable pre- and post-processing.
Neural MT AutoSelect
Proprietary technology that automatically selects the best machine translation engine for each language pair in milliseconds, with auto-fallback and hallucination mitigation.
AI Post-Editing Agent
Automated AI agent that reviews machine translations for grammar, tone, and semantic accuracy, fixing inaccuracies and hallucinations in a single automated step.
RAG-Powered Prompt Tooling
Retrieval-Augmented Generation technology that enhances LLM translations using your translation memory, glossaries, and style guides for brand-consistent output.
LQA Suite
Dedicated linguistic quality assurance workspace with automated sampling, error logging, round-trip editing, and systematic translation quality evaluation separate from production.
CAT Tool with Visual Context
Computer-Assisted Translation tool that captures exact page layouts for in-context translation, letting translators preview how translations appear on the actual page.
Translation Memory
Persistent translation memory that learns from human edits to MT output, with 180-day storage on Core and unlimited on Enterprise, plus 30-day MT caching for consistency.
Dynamic Workflows
Customizable automated workflows that route content through the right combination of MT, AI, and human translation based on content type and quality requirements.
Connectivity Suite
Pre-built integrations and custom APIs connecting to your tech stack, plus a Global Delivery Network for website and app localization without code changes.
Model Control Hub
Enterprise governance controls that let organizations manage which AI providers Smartling can use, with strong data protection and privacy-conscious provider selection.
Pricing
- Free to start (per-word fees apply)
- Basic workflow and project management
- CAT Tool with visual context
- Translation memory (180 days)
- Essential reporting
- Automated quality checks
- Bring your own translators
- Fully customizable dynamic workflows
- Broad connectivity suite
- Unlimited translation memory
- Advanced LQA Suite
- Custom reporting
- Linguistic packages
- AI Hub with 20+ engines
- Model Control Hub governance
Best For
Enterprise Website Localization
Translate and maintain multilingual websites at scale using the Global Delivery Network and automated workflows to keep content synchronized across 450+ languages.
Product & App Localization
Integrate translation directly into the development pipeline with APIs and connectors, using AI translation for rapid iteration and human review for user-facing strings.
Marketing Content Translation
Localize marketing campaigns, landing pages, and brand content with RAG-powered AI that maintains brand voice and terminology across all target markets.
Knowledge Base & Documentation
Translate high-volume support documentation and help center content cost-effectively with machine translation and AI post-editing for consistent quality.
Similar Tools
Smartly.AI
Generative AI Powered Chatbots for Customer Service
Cohere
Your next breakthrough, powered by AI
Colossyan
AI video creation platform for professional training videos
Contentful
The leading headless CMS for composable content at scale
Crowdin
AI-powered localization platform for global content distribution
D-ID
AI-Powered Video Creation with Talking Avatars
Featured In
7 Best Localization Tools With the Strongest Machine Translation Engines (2026)
Best for enterprise teams needing cost transparency and AI-automated quality — per-word pricing and AI agents give granular control over translation spend and quality
Best Tools for Ecommerce Brands Launching in a New Country (2026)
Best for established ecommerce brands launching in multiple sophisticated markets where translation quality is a brand-defining moat.
Best Tools for Ecommerce Brands Launching in a New Country (2026)
Best for established ecommerce brands launching in multiple sophisticated markets where translation quality is a brand-defining moat.