VDK Runtime 6.3.1 - 21th July 2026

Summary

We’re excited to announce the release of VDK Runtime 6.3.1, which resolves issues caused by library linking conflicts.

This release improves dependencies integration to enhance exception handling and application stability. This change preserves detailed error information, resulting in more reliable error reporting and, on Android, resolves crashes that could occur in certain error scenarios.

Learn More

Additional updates and refinements have been made across the VDK ecosystem to enhance developer experience and performance.

We’re committed to improving usability, flexibility, and performance — and your feedback on VDK 6.3.1 is always welcome.

Versions

Vdk-Service

Component

Version

Vdk-Service

2.1.2 Updated

Samples (C++)

Component

Package name

Version

Technologies

Chained grammars

chained-grammars

7.1.1 Updated

Voice Recognition (Grammar)

Dynamic grammar

dynamic-grammar

7.1.1 Updated

Voice Recognition (grammar)

Simple application

simple-application

7.1.1 Updated

Voice Recognition (grammar) Voice synthesis

Tts

tts

7.1.1 Updated

Voice synthesis

Voice biometrics

voice-biometrics

7.1.1 Updated

Voice Biometrics

Voice Commands Language Understanding

voice-commands-language-understanding

4.1.1 Updated

Voice Recognition (continuous)

Speech Enhancement

speech-enhancement

3.1.1 Updated

Voice Recognition (graMmar) SPeech enhancement

Free Speech

free-speech

4.0.1 Updated

Voice Recognition (NEURAL)

VSDK (C++)

Component

Version

Vsdk

11.1.2 Updated

Vsdk-csdk-asr

2.1.2 Updated

Vsdk-vec-addon

2.1.2 Updated

Vsdk-csdk-tts

2.1.2 Updated

Vsdk-idvoice

6.1.2 Updated

Vsdk-tssv

5.1.2 Updated

Vsdk-vnlu

4.1.2 Updated

Vsdk-s2c

3.1.2 Updated

Vsdk-audio-portaudio

5.1.2 Updated

Samples (JAVA)

Component

Package name

Version

Technologies

Chained Grammars

chained-grammars

7.4.2 Updated

Voice Recognition (Grammar)

Dynamic Grammar

dynamic-grammar

6.4.2 Updated

Voice Recognition (grammar)

Simple Application

simple-application

6.4.2 Updated

Voice Recognition (grammar) Voice synthesis

Speech Enhancement

speech-enhancement

3.4.2 Updated

Voice Recognition (graMmar) SPeech enhancement

Tts

tts

7.4.2 Updated

Voice synthesis

Voice Biometrics

voice-biometrics

4.3.2 Updated

Voice Biometrics

Free Speech

free-speech

5.0.2 Updated

Voice Recognition (NEURAL)

VSDK (JAVA)

Component

Version

Vsdk

7.4.3 Updated

Vsdk-csdk-asr

4.1.2 Updated

Vsdk-vec-addon

2.1.2 Updated

Vsdk-csdk-tts

4.1.2 Updated

Vsdk-idvoice

4.4.2 Updated

Vsdk-tssv

4.4.2 Updated

Vsdk-vnlu

1.1.0

Vsdk-s2c

4.1.2 Updated

Details

VSDK & VDK-Service

Vsdk & Vdk-Service

Fixes & Improvements:
  • Updated the internal library linkage from static to shared libraries to ensure consistent exception propagation across library boundaries.

  • Fixed an issue where custom exceptions could be caught as std::exception, resulting in the loss of exception-specific information.

  • Improved preservation of exception metadata, enabling more accurate diagnostics and error reporting.

  • Resolved library symbol conflicts that could occur due to static linking.

  • Android: Fixed crashes that could occur during exception propagation across library boundaries.

  • Voice Recognition Android: Fixed an issue where event code retrieval could return the generic NativeEvent code instead of the correct event-specific code in certain cases.