full-duplex

OpenAI has released GPT-Live-1 as a developer API, a speech model capable of full-duplex conversation—listening and talking simultaneously. It already powers ChatGPT's voice mode and costs $0.05 per minute, with benchmark scores showing sharp improvements over GPT-Realtime-2.1.

NVIDIA has released NemotronLabs VoiceChat 11B, an 11-billion-parameter end-to-end full-duplex speech model that unifies streaming speech understanding and generation in one architecture. The model claims to be the first open full-duplex system to support live tool calling during natural conversation, with ~450ms turn-taking latency.

OpenAI has released GPT-Live-1, a full-duplex voice model that can speak and listen simultaneously, replacing ChatGPT's previous turn-based voice system. The model automatically routes queries to GPT-5.5 for reasoning tasks and includes real-time translation capabilities.