GPT-Realtime-2, -Translate, and -Whisper: new SOTA realtime voice APIs

**OpenAI** released **GPT-Realtime-2**, a voice model with **GPT-5-class reasoning**, tool use, interruption handling, and extended context windows up to **128K tokens**, achieving top scores on **Big Bench Audio** and **Conversational Dynamics** benchmarks. They also launched a **Chrome plugin for Codex** enabling browser control and multitasking, and introduced **GPT-5.5 with Trusted Access for Cyber** for secure defensive workflows and red teaming. **Anthropic** introduced **Natural Language Autoencoders** for interpreting model activations as human-readable text, aiding interpretability and debugging, while **Goodfire** proposed a neural geometry research agenda focusing on **manifolds** as primitives for neural network behavior. Anthropic also announced **The Anthropic Institute** to advance AI safety and economic resilience research.