Hindi, Tamil and Telugu are routable

Status: scheduled.

All three had transcription numbers and no synthesis study, so they were refused as unsupported. Synthesis boards for them are now published, so each has evidence on both legs and each publishes an evidence card. Routing follows the measurements.

Hindi, Tamil and Telugu are selectable and routable where they previously answered unsupported_language. Each is measured on both legs, transcription and synthesis, and each publishes a landing-page evidence card.

Thai, Vietnamese, Mandarin, Indonesian and Malay stay out. They have transcription numbers and no synthesis study, so enabling them would advertise routing a language whose naturalness was never measured.

The published boards, catalog and language studies were regenerated from the publisher in the same change, so the numbers behind these languages are the ones the benchmark site shows.

Action: No migration is required. Keys created before this change are unaffected. A new key can now select Hindi, Tamil or Telugu, and GET /v1/routing/preview shows what each will choose.