Localize.io by Alconost: Agentic Localization With Human Review
ALEXANDRIA, Va., November 10, 2026. Alconost, a localization company since 2004, today launched Localize.io, an AI translation service built to be run by AI agents and checked by anyone.
Autonomous. Localize.io is not a platform teams move into but a pipe: a job goes in, and finished translations come out with the record of how they were made. A team’s coding agent, such as Claude or Codex, reads a single skill file and runs it through the API, sending what the team has: strings, glossaries, translation memory, style guides and screenshots.
Verifiable. Each job returns a full record: which model translated each language and why, the context sent with every string, the checks that ran, and what each model call cost. When a translation needs a human check, the team sends it to a linguist it chooses, its own or Alconost’s. Each approval is sealed with a cryptographic signature anyone can check, through the API or with the public key it carries. Change one word and the seal breaks. Instead of a “reviewed” status, teams get approval they can check themselves, including on strings already live in their product.
Context per string, not per file. Rather than handing a model a whole glossary and memory as lists, Localize.io gives each string the context sent for it, the screenshots that show it, its ten nearest translations by meaning, and only the terms that apply to it. Output is checked by count (every string, placeholder and tag in place) and, when a glossary is set, by a second model for terminology.
Tested blind. In a blind comparison with AI translation in a leading translation management system (same model, five real projects, ten language pairs, 1,455 strings), native-speaker linguists scored both outputs by MQM without knowing which was which. Localize.io produced 135 errors against 219, including 7 major errors against 45, and 90.5% of its strings were error-free against 84.9%. Both outputs came from the same model; the gap reflects how context and instructions were prepared.
“Teams already let agents write their code. Translation was the one step they still had to hand off and take on trust. Now the agent handles it end to end, and the human sign-off is something you can verify, not just believe.” — Denis Zhilko, Product Manager, Head of LangOps, Alconost
Models are billed at cost, with no markup; failed jobs are free. For language service providers and platforms, Localize.io is available as white label and on-premises.
Availability. Localize.io is available now at https://localize.io
About Alconost
Alconost is a localization company founded in 2004, providing translation, localization and video production for software, apps and games. Localize.io by Alconost is its AI translation service.