Specialised Translation for Artificial Intelligence

M21AI occupies a unique position in the translation market. We are not merely an agency that translates content about AI, nor simply a company that uses AI to translate. We are both. Our linguists understand concepts such as transformer architectures, reinforcement learning, embeddings and token limits because they work with this terminology daily in real production contexts.

This dual competence allows us to offer something that neither approach in isolation can achieve: translation of technical AI content with the precision of subject-matter experts, executed through processes that integrate the best available AI tools. The result is superior quality, shorter turnaround times and terminological consistency that is maintained throughout complex projects.

AI companies work with high-value intellectual property: model architectures, proprietary datasets, fine-tuning strategies and pre-launch documentation. M21AI operates with individual NDAs per project, file encryption in transit and at rest, and isolated environments for projects requiring enhanced confidentiality.

We comply with GDPR and are aligned with the EU AI Act principles regarding transparency and accountability in the use of AI in translation processes. Our clients know exactly when and how AI is used at each stage of the project, and they maintain full control over their data.

AI models are only as good as the data they are trained on. M21AI provides multilingual annotation and classification services for training NLP, NLU and NLG models. This includes named entity annotation, sentiment classification, intent labelling, response evaluation for RLHF and creation of parallel datasets for fine-tuning translation models.

We work with native annotator teams in over 40 languages, with quality control processes that include inter-annotator agreement (IAA), sampling review and cross-validation. Datasets are delivered in the formats required by the client, ready for direct ingestion into the training pipeline.

Chatbots, virtual assistants, voice interfaces and applications with AI components have localisation needs that go beyond string translation. It is necessary to adapt conversational personalities, adjust prompt examples to cultural contexts, translate pre-defined responses and ensure that the assistant's tone works naturally in each language.

M21AI localises AI products for international markets, including the adaptation of conversational flows, translation of support knowledge bases and review of model outputs in target languages. We work with formats such as JSON, YAML and Markdown, and deliver files ready for integration.

The translation of prompts, system instructions and AI-generated content presents specific challenges. Prompts that work perfectly in English can lose effectiveness when translated literally, because linguistic structure directly influences the quality of the model's output. Prompt localisation requires an understanding of both the target language and the model's behaviour.

M21AI translates and adapts prompts, content templates and system instructions with linguists who understand how LLMs process text in different languages. We also offer review of AI-generated content in multiple languages, ensuring that the output maintains quality, accuracy and cultural suitability.

Quality control at M21AI combines human verification with AI tools that detect error patterns that escape manual review. Our systems analyse each delivery across dimensions such as terminological consistency, glossary adherence, variable and placeholder integrity, estimated fluency and compliance with the client's style.

We use MQM (Multidimensional Quality Metrics) metrics and quality estimation (QE) models that automatically identify segments with the highest probability of containing errors, directing human review to where it has the greatest impact. This process reduces QA time without compromising final delivery quality.

M21AI combines over 20 years of M21Global's experience in professional translation with a specialisation that few competitors can offer: simultaneous mastery of AI content and AI tools applied to translation. We are ISO 17100 certified by Bureau Veritas, which guarantees audited and traceable quality processes across all projects.

We are not a machine translation startup without human oversight, nor a traditional agency that has added a "translate with AI" button. We are a team that lives at the intersection of linguistics and technology, built to serve companies that operate in that same space. Each project is assigned a dedicated manager and translators with proven experience in AI.

Quality at M21AI is not subjective. We use MQM metrics to evaluate each delivery across dimensions such as accuracy, fluency, terminology, style and domain suitability. For MTPE projects, we monitor editing rates (edit distance) and compare them with benchmarks by language pair and content type.

Each project includes a quality report and scores are monitored over time. Our ISO 17100 certification by Bureau Veritas means that all processes, including those integrating AI, are audited annually and meet international quality requirements for translation.