Update History
This page lists the major update history for AmiVoice API and this manual. Minor updates and fixes are made regularly in addition to those listed here.
Major Functional Update History for AmiVoice API
2025-10-31: "Usage Aggregation Tag" now supports Asynchronous HTTP interface v2
Usage Aggregation Tag now supports Asynchronous HTTP interface v2, making it available for all interfaces.
2025-10-02: Language labels added to recognition results of multilingual End to End engine
Language labels indicating the language of words recognized by the engine have been added to the word-level recognition results of the multilingual End to End engine. For details, please see results[0].tokens[].language in Word-level Results.
2025-09-30: Release of new feature "Usage Aggregation Tag"
Usage Aggregation Tag, which enables obtaining usage by attribute when sharing the same account, has been released. However, this feature is not yet supported for Asynchronous HTTP interface v2.
2025-08-13: Support for Opus audio data stored in WebM container
AmiVoice API now supports Opus audio data stored in WebM container. For details, please see Audio formats with headers.
2025-06-23: Word Registration API now supports 8k audio
Word Registration API can now handle operations for 8k audio profiles. For details, please see adf in the "Request Parameters" of each operation description in User Word Registration.
Major Update History for the Manual
2025-10-01: Information on Rule Grammar published
Information about grammar files used with the "音声入力_ルール" engine (-a-rule-input-private) available in AmiVoice API Private has been published.
Location: Rule Grammar
2025-08-13: Information on segmenterProperties published
Information about parameters related to adjusting speech segment detection in speech recognition within the request parameter segmenterProperties has been published.
Location: "Speech segment detection parameters" in segmenterProperties