Microsoft Azure Translator API
Real-time translation for 100+ languages with custom models
Freemium
✓ Verified
🇺🇸 United States
Microsoft Azure Translator is an enterprise-grade translation API covering 100+ languages and dialects. Unique features include transliteration, language detection, dictionary lookup, and sentence alignment. The Custom Translator feature lets enterprises train domain-specific models using their own bilingual content. The 2 million free characters/month is the most generous free tier among major providers. Deeply integrated with Microsoft 365, Azure Cognitive Services, and Power Platform. Ideal for enterprises already in the Microsoft ecosystem.
API Details
Auth Method
API Key
Pricing Model
Freemium
Free Tier
Yes — 2 million characters/month free
Rate Limit
2,000,000 chars/hour
Format
REST / JSON
Versioning
v3.0
SLA / Uptime
99.9%
Compliance
ISO 27001, SOC 2, HIPAA, GDPR, FedRAMP
Geographic Restrictions
Global (30+ Azure regions, data residency options)
Last Verified
2026-02-20
Categories
Frequently Asked Questions
Azure Translator supports 100+ languages and dialects u2014 the widest coverage among major translation APIs. It includes many low-resource languages not available in Google Translate or DeepL. This makes it particularly valuable for applications targeting diverse global audiences or regions with less common languages.
Azure Translator offers a free tier of 2 million characters per month. Standard pricing is $10 per million characters. Custom Translator (for domain-specific models) costs $40 per million characters. Document translation is $15 per million characters. All tiers include language detection, transliteration, and dictionary lookup at no extra charge.
Custom Translator lets you train a translation model on your own bilingual documents to improve quality for specific domains (legal, medical, technical, or brand-specific terminology). If generic translation quality is insufficient for your use case, Custom Translator can dramatically improve accuracy. You need at least 10,000 translated sentence pairs to train a model.
Yes. Azure Translator integrates natively with Azure Cognitive Search, Azure Bot Service, Azure Logic Apps, and Power Automate. It also works within Microsoft 365 (Teams real-time translation, Translator for Word). For organisations already using Azure, this tight integration reduces friction for building multilingual applications.