Pricing comparison
Real pricing based on monthly character volume. All prices in USD.
| Volume | DeepL | Amazon | Microsoft | Langbly | ||
|---|---|---|---|---|---|---|
| 1M chars/mo | $20 | $25 | $15 | $10 | $2.50 | |
| 5M chars/mo | $100 | $125 | $75 | $50 | $22.50 | Save 55-82% |
| 25M chars/mo | $500 | $625 | $375 | $250 | $122.50 | Save 51-80% |
| 100M chars/mo | $2,000 | $2,500 | $1,500 | $1,000 | $497.50 | Save 50-80% |
Feature comparison
| Feature | DeepL | Amazon | Microsoft | Langbly | |
|---|---|---|---|---|---|
| Price per 1M chars | $20 | $25 | $15 | $10 | $5 |
| Free tier | $300 credit | 500K/mo | 2M/mo (12mo) | 2M/mo | 500K/mo |
| Languages | 249 | 33 | 75 | 135 | 100+ |
| Translation engine | NMT | NMT + AI | NMT | NMT | Next-gen AI |
| Context-aware | Limited | ||||
| Formality control | |||||
| HTML support | |||||
| Built-in caching | 7-day | ||||
| Glossary support | |||||
| Google v2 compatible | |||||
| Setup complexity | GCP project | API key | AWS IAM | Azure key | API key |
| Monthly base fee | $0 | $5.49 | $0 | $0 | $0 |
How we evaluated these APIs
We compared the five most popular translation APIs across four dimensions: pricing (cost per million characters at different volumes), quality (natural-sounding output, locale handling, context awareness), developer experience (setup time, API design, documentation), and features (formality, caching, glossaries, HTML handling).
All prices are based on published rates as of February 2026. Quality assessments are based on English-to-Dutch translation benchmarks using 160 evaluation cases covering technical, marketing, legal, and conversational content.
Best for price: Langbly
Langbly offers the lowest per-character pricing among quality providers at $5 per million characters, with 500K free characters per month. At 5M characters you pay $22.50/mo, at 100M just $497.50/mo. That is cheaper than every major alternative at equivalent volumes.
Microsoft Translator offers the next cheapest pay-per-use rate at $10/M, but that is still double what Langbly charges.
Best for quality: DeepL or Langbly
DeepL has long been considered the quality leader for European languages. However, context-aware translation (used by Langbly) is increasingly outperforming neural MT, especially for context-dependent content and natural phrasing.
For Dutch specifically, Langbly's custom locale rules produce more natural output, using informal "je" instead of overly formal "u", correct number formatting (1.200,50), and proper km/u instead of km/h.
Best for language coverage: Google Translate
If you need to support rare or low-resource languages, Google Translate wins with 249 languages. Microsoft is second with 135, followed by Langbly (100+), Amazon (75), and DeepL (33).
For most commercial use cases covering major European and Asian languages, all five APIs have sufficient coverage.
Best for developer experience: Langbly or DeepL
Langbly and DeepL both offer simple API key authentication. Google and Amazon require setting up cloud projects (GCP/AWS) with IAM roles, which adds complexity.
Langbly has an additional advantage: full compatibility with Google Translate v2 API format. If you already use Google Translate, migrating takes under 10 minutes. Just change the URL.
Frequently asked questions
What is the best translation API in 2026?
It depends on your priorities. For price, Langbly offers the best value at $5 per million characters (up to 75% cheaper than Google). For European language quality, DeepL and Langbly lead. For language coverage, Google Translate supports the most languages (249). For easy migration, Langbly is the only Google v2-compatible alternative.
Which translation API is the cheapest?
Langbly is the cheapest quality provider at $5 per million characters with no base fee, up to 75% cheaper than Google ($20/M). Microsoft Translator is the next cheapest at $10/M.
Is advanced AI translation better than neural machine translation?
Advanced AI translation generally produces more natural-sounding output because it understands context and intent, not just word patterns. This is especially noticeable for marketing copy, UI strings, and content where tone matters.
Can I use multiple translation APIs?
Yes, many companies use multiple APIs for different use cases. For example, Google Translate for rare languages and Langbly for high-quality European translations. Langbly's Google v2 compatibility makes it easy to use as a drop-in replacement.