OpenAI Introduces GPT-Realtime-2: GPT-5-Class Reasoning for Voice Agents
Original: OpenAI Introduces GPT-Realtime-2: GPT-5-Class Reasoning for Voice Agents View original →
Real-Time Voice Reasoning Arrives
OpenAI has launched GPT-Realtime-2 in its API — the company's first voice model powered by GPT-5-class reasoning. The model enables voice agents to listen, reason, and take action as conversations unfold, moving beyond simple call-and-response interactions.
New Streaming Models
Alongside GPT-Realtime-2, OpenAI released two additional streaming models:
- GPT-Realtime-Translate: Live speech translation from 70+ input languages into 13 output languages
- GPT-Realtime-Whisper: Streaming speech-to-text that transcribes as you speak
Shift in Voice AI Capabilities
The new models represent a significant upgrade to what voice agents can accomplish. GPT-Realtime-2 can handle interruptions, maintain context across long conversations, and reason through complex requests — all in real time. The context window has expanded from 32K to 128K tokens compared to the previous Realtime API.
Pricing
GPT-Realtime-2 is priced at $32 per million audio input tokens and is available immediately via the API.
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Why it matters: xAI has turned the Grok Voice stack into standalone STT/TTS APIs with batch transcription at $0.10/hour and streaming at $0.20/hour. The post puts 25+ languages, diarization, and word-level timestamps in direct competition with enterprise transcription tools.
Why it matters: API availability is the moment a flagship model becomes something teams can actually wire into products. OpenAI’s developer account says GPT-5.5 brings fewer retries, and the official release page now lists API access with a 1M context window and updated pricing.
The U.S. Department of Defense finalized AI deployment agreements with OpenAI, Google, Microsoft, AWS, NVIDIA, SpaceX, Reflection AI, and Oracle for its most classified networks. Anthropic was excluded after refusing to allow Claude to be used for purposes including autonomous weapons and mass surveillance.
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