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December 15, 2025 · OpenAIFeature

Four dated audio snapshots released, with custom voices for eligible customers

Released four new dated audio snapshots. These updates deliver reliability, quality, and voice fidelity improvements for real-time, voice-driven applications. Read more here.

  • gpt-realtime-mini-2025-12-15
  • gpt-audio-mini-2025-12-15
  • gpt-4o-mini-transcribe-2025-12-15
  • gpt-4o-mini-tts-2025-12-15

This launch also includes support for Custom voices for eligible customers.

Read the OpenAI changelog
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