How We Built a Self-Correcting Localization System for OpenRouter

OpenRouter currently supports 8 languages including Simplified Chinese, Spanish, Japanese, and Korean, and localization features have entered Beta testing. Its system achieves self-correction by detecting changes in strings in the code daily, translating them using GPT-6.1 Sol, and then verifying through code checks and a second model. When translation fails, the system retries with the reason, recording errors as rules or test cases. The entire process runs within OpenRouter, with translation data stored in the code-side Git repository.