Best AI localization and translation tools for games (2026)
Picks based only on what each vendor's own pricing and terms pages say (checked 2026-10-15): can you ship it, what it costs, and whether your agent can call it. We don't rank by output quality.
Free machine-translation API to start
DeepL's API Developer plan is free with a one-time 1 million character credit (no web translator); Growth is $26/mo billed annually plus usage. Its Terms don't address who owns translations, and you indemnify DeepL for breaches.
Free localization platform
Crowdin Free is $0 with 60K hosted words and Crowdin AI, but free-plan translations are donated to Crowdin's translation memory. Its Terms respect your 'exclusive ownership' of Client Data, translations included.
Built for game content, team pricing
Gridly sells CMS (from €249/mo), TMS (from €125/mo) and CAT (from €280/mo) modules with a 14-day trial. Its Terms page did not load for us, so its licence is unverified.
Who owns volunteer translations?
Crowdin says it does not transfer IP between translators and project owners. If players or freelancers translate your game, get a written agreement first.
All tracked options
| Tool | Free tier | Paid price (as shown) | Commercial licence | API / MCP | Checked |
|---|---|---|---|---|---|
| DeepL Localization & translation | DeepL API Developer: free, one-time credit of 1 million characters, 1 API key (no web translator). DeepL Pro: 30-day free trial | API Growth $26/mo billed annually + usage ($27.50 per extra 1M characters; 12M characters/yr included). Translator Pro (Germany, EUR): Individual €7.49/mo billed annually (300,000 characters), Team €24.99/user, Business €49.99/user; Enterprise custom | Free: DeepL Pro Terms: no clause on ownership of translations found; API Developer plan may not process personal data (s.8.3.11) Paid: Same Terms; paid plans list 'No data training' | REST API; MCP announced on the developer pages | 2026-10-15 price: verified licence: partial |
| Crowdin Localization & translation | Free: $0/mo, 60K hosted words, 1 private project, Crowdin AI included; free-plan users 'donate translations to Crowdin's translation memory' | Pro from $50/mo billed annually ($600/yr); Team from $150/mo billed annually ($1,800/yr); Enterprise custom | Free: Terms s.12.3: 'Supplier respects your right to exclusive ownership of your Client Data' (Client Data includes translations). On the free plan, translations are donated to Crowdin's translation memory Paid: Same s.12.3 on every plan | REST API | 2026-10-15 price: verified licence: verified |
| Gridly Localization & translation | 14-day trial of all modules (Team tier feature set) | CMS from €249/mo (5 seats); TMS from €125/mo (2 seats); CAT from €280/mo (20 seats); Enterprise custom | Free: unverified Paid: unverified | API in three levels (Basic, Advanced, Full) | 2026-10-15 price: verified licence: unverified |
Compare cost per asset in the calculator · Commercial-use answers · Ship with no attribution
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