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GPT Audio

Whether recognizing complex utterances, synthesizing expressive responses, or reasoning across modalities, it remains remarkably responsive and adaptable.
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GPT Audio

GPT Audio is purpose-built for high fidelity conversational experiences, automating speech analytics and enabling new forms of voice-driven intelligence.

GPT Audio API Overview

GPT-Audio is a state-of-the-art audio AI system from OpenAI, capable of interpreting and generating high-fidelity speech and audio. It performs with remarkable precision across modes like speech-to-speech, speech-to-text, text-to-speech, and multimodal audio reasoning, streamlining both voice-driven workflows and conversational AI solutions.

Technical Specifications

  • Model Type: Foundation Model (Transformer-based architecture)
  • Modalities Supported: Audio (input/output), Text (input/output), Multimodal speech-text-audio reasoning
  • Input Formats: WAV, MP3, FLAC, PCM
  • Output Formats: WAV, MP3, FLAC (16kHz or 44.1kHz, mono/stereo)
  • Languages: Multilingual coverage (over 50 languages and accents)
  • Maximum Audio Length: Up to 30 minutes per segment

Performance Benchmarks

  • Word Error Rate (WER): <2% on standard speech datasets (LibriSpeech, CommonVoice)
  • MOS (Mean Opinion Score) for Speech Synthesis: 4.8/5 (near human parity)
  • Speaker Verification Accuracy: 98.9%
  • Reaction Latency: 600ms average for real-time TTS
  • Ambient Noise Robustness: Functions well up to 85dB background

Key Features

  • Full-duplex conversation: Handles simultaneous speech recognition and synthesis
  • Emotion and intonation control: Generates natural, expressive speech output
  • Speaker Identification: Differentiates multiple speakers with high reliability
  • Noise Robustness: Accurate in noisy and dynamic environments
  • Custom Voice Profiles: Allows training or selection of virtual voices for branding or accessibility
  • Multimodal reasoning: Integrates audio cues, spoken data, and textual prompts for hybrid understanding

GPT Audio API Pricing

  • Input: $33.60 / 1M audio tokens; $3.25 / 1M tokens
  • Output: $67.20 / 1M output; $13\1M tokens

Code Sample

Comparison with Other Models

vs OpenAI Whisper: GPT-Audio offers a wider range of functionalities including expressive speech synthesis beyond transcription.

vs OpenAI GPT-4o (Omni):GPT-4o, a flagship multimodal model, offers comprehensive voice, text, vision, and audio inputs; however, GPT-Audio is specially optimized for high-fidelity audio tasks with superior speech recognition accuracy and more natural, expressive TTS output.

vs Deepgram Aura: Deepgram Aura excels in detailed voice profile control, but GPT-Audio adds a full multimodal audio reasoning layer.

GPT Audio API Overview

GPT-Audio is a state-of-the-art audio AI system from OpenAI, capable of interpreting and generating high-fidelity speech and audio. It performs with remarkable precision across modes like speech-to-speech, speech-to-text, text-to-speech, and multimodal audio reasoning, streamlining both voice-driven workflows and conversational AI solutions.

Technical Specifications

  • Model Type: Foundation Model (Transformer-based architecture)
  • Modalities Supported: Audio (input/output), Text (input/output), Multimodal speech-text-audio reasoning
  • Input Formats: WAV, MP3, FLAC, PCM
  • Output Formats: WAV, MP3, FLAC (16kHz or 44.1kHz, mono/stereo)
  • Languages: Multilingual coverage (over 50 languages and accents)
  • Maximum Audio Length: Up to 30 minutes per segment

Performance Benchmarks

  • Word Error Rate (WER): <2% on standard speech datasets (LibriSpeech, CommonVoice)
  • MOS (Mean Opinion Score) for Speech Synthesis: 4.8/5 (near human parity)
  • Speaker Verification Accuracy: 98.9%
  • Reaction Latency: 600ms average for real-time TTS
  • Ambient Noise Robustness: Functions well up to 85dB background

Key Features

  • Full-duplex conversation: Handles simultaneous speech recognition and synthesis
  • Emotion and intonation control: Generates natural, expressive speech output
  • Speaker Identification: Differentiates multiple speakers with high reliability
  • Noise Robustness: Accurate in noisy and dynamic environments
  • Custom Voice Profiles: Allows training or selection of virtual voices for branding or accessibility
  • Multimodal reasoning: Integrates audio cues, spoken data, and textual prompts for hybrid understanding

GPT Audio API Pricing

  • Input: $33.60 / 1M audio tokens; $3.25 / 1M tokens
  • Output: $67.20 / 1M output; $13\1M tokens

Code Sample

Comparison with Other Models

vs OpenAI Whisper: GPT-Audio offers a wider range of functionalities including expressive speech synthesis beyond transcription.

vs OpenAI GPT-4o (Omni):GPT-4o, a flagship multimodal model, offers comprehensive voice, text, vision, and audio inputs; however, GPT-Audio is specially optimized for high-fidelity audio tasks with superior speech recognition accuracy and more natural, expressive TTS output.

vs Deepgram Aura: Deepgram Aura excels in detailed voice profile control, but GPT-Audio adds a full multimodal audio reasoning layer.

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