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Machine Translation: Human Expertise, Model‑Ready Quality

From native‑language human translation to multi‑method quality evaluation, Defined.ai helps teams building, fine‑tuning, and training MT systems deliver accurate, fluent, and context‑aware translations across 100+ language pairs.

1.6M+

Crowd members

500+

Languages and locales

50+

Domains

ISO & GDPR

ISO 27001- and 27701-certified and GDPR compliant

Machine Translation You Can Trust at Scale

Professional linguists translate into their native target languages to preserve tone, formality, and style.

Native‑level Translations at Scale

Professional linguists translate into their native target languages to preserve tone, formality, and style.
Side‑by‑side comparisons, accuracy/fluency scoring, and in‑context reviews capture real‑world quality signals.

Flexible Evaluation Methods

Side‑by‑side comparisons, accuracy/fluency scoring, and in‑context reviews capture real‑world quality signals.
Built‑in quality gates across projects to ensure reliable outcomes for sensitive domains and locales.

Multi‑ checkpoint QA

Built‑in quality gates across projects to ensure reliable outcomes for sensitive domains and locales.
Neevo demos and reporting validate setups, scoring, and outputs for transparent governance.

Platform‑ proven Workflows

Neevo demos and reporting validate setups, scoring, and outputs for transparent governance.

Expert Machine Translation for Any Data Type

We offer high-quality machine translation across every modality—audio, image, video, text, and multimodal—ensuring diversity, compliance, and scalability for your AI training needs.

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Audio

Enable high‑quality speech translation and spoken content experiences:

  • Speech Translation (ASR → MT → TTS): Chain ASR with translation and optional TTS for multilingual audio experiences. (Evaluation and post‑editing steps mirror our MTPE and QA methods).
  • Subtitle & Transcript Localization: Translate time‑aligned transcripts while preserving speaker intent, tone, and style.
  • Audio QA & Review: In‑context checks for terminology, timing, and listener comprehension, with multi‑checkpoint sign‑off.

Image

Localize text embedded in visual assets and UI flows:

  • OCR + Translation: Extract, translate, and review text from screenshots, documents, and product imagery using human QA.
  • UI/UX String Localization: Validate tone, truncation, and context within screenshots or design mocks; prevent duplicates via reference translation.
  • Visual Context Evaluation: In‑context assessment to ensure translations match imagery, use case, and audience.

Video

Scale multilingual video with accuracy, fluency, and timing fidelity:

  • Caption & Subtitle Translation: Translate and normalize subtitles; reviewers verify timing, reading speed, and cultural fit.
  • Side‑by‑Side Quality Review: Compare candidate translations for accuracy and fluency on representative clips.
  • In‑Context Evaluation: Judge perceived quality within scene context and narrative flow for realistic user impact.

Text

Core services for training, fine‑tuning, and validating MT systems:

  • Human Translation (100+ language pairs): Native‑target linguists deliver faithful translations with style and register preserved; layered quality checkpoints included.
  • Machine Translation Post‑Editing (MTPE): Professional editors correct machine output for accuracy, fluency, and terminology; Neevo demo available.
  • Paraphrasing / Reference Translation: Produce paraphrases to diversify datasets; prevent duplicates through reference translation; Neevo demo available.
  • Translation Evaluation: Side‑by‑side comparisons, accuracy/fluency scoring, and in‑context quality evaluation with reporting dashboards and examples.

Multimodal

Support products that mix text, audio, and visuals:

  • Image‑Text & Audio‑Text Alignment: Verify that translations align with visual or spoken context for clarity and intent preservation.
  • Cross‑Channel Consistency: Ensure terminology and style are consistent across UI strings, help with content, subtitles, and voiceover scripts.
  • Scenario‑Based Evaluation: Run in‑context reviews that reflect real user journeys (e.g., onboarding flows, support walkthroughs).

Trusted by:

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Trusted by teams localizing at enterprise scale

Organizations choose Defined.ai for native‑language accuracy, efficient MT post‑editing, and transparent evaluation methods that keep multilingual experiences consistent and credible.

Customer Support Automation

Customer Support Automation

Enable chatbots and helpdesk systems to handle queries in multiple languages with MTPE for accuracy.

E-commerce Product Content

E-commerce Product Content

Localize product descriptions, reviews, and marketing copy for global marketplaces.

Media & Entertainment

Media & Entertainment

Translate subtitles and scripts for video streaming platforms, ensuring timing and cultural fit.

Enterprise Documentation

Enterprise Documentation

Convert technical manuals, compliance documents, and internal communications across 100+ language pairs.

Quality Evaluation for MT Systems

Quality Evaluation for MT Systems

Run side-by-side comparisons, fluency scoring, and in-context reviews to benchmark machine translation performance.

Learn More About Machine Translation

Inclusive ASR Models: Using High-Quality, Ethical Data for Global Spee...

Let's raise the bar on your machine translation projects.

Partner with Defined.ai to design a custom translation and evaluation strategy aligned to your quality targets, domains, and release cadence.

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