Class OpenAIAudioTranscriptionCapabilityImpl

Creates a new OpenAI audio transcription capability delegate.

Transcribes input audio into text using OpenAI's non-streaming transcription endpoint.

Steps:

• Validate request payload
• Merge capability options
• Normalize file input for multipart upload
• Call OpenAI transcription endpoint
• Normalize transcript to chat artifact output

Streams transcription deltas from OpenAI and emits a final completed transcript chunk.

Emits:

• done: false chunks for transcript.text.delta events
• one terminal done: true chunk on transcript.text.done
• one terminal done: true error chunk on failure