GPT-5.3-Codex-Spark: Real-Time Coding Model
OpenAI introduces GPT-5.3-Codex-Spark, its first real-time coding model. It delivers 15x faster generation and a 128k context window. The model is now available in research preview for ChatGPT Pro users.
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OpenAI Disbands Mission Alignment Team
OpenAI has dissolved its mission alignment team. The leader transitions to chief futurist role. Remaining members reassigned across the company.
GPT-5.2 Derives Novel Physics Formula
GPT-5.2 proposed a new formula for gluon amplitude in a preprint. OpenAI and academic collaborators formally proved and verified the result.
Harness Engineering with Codex for Agents
OpenAI blog post explores harness engineering using Codex in an agent-first world. Written by Ryan Lopopolo, Member of the Technical Staff. Focuses on leveraging code generation for AI agent development.
Harness Engineering with Codex
OpenAI blog post explores harness engineering using Codex in an agent-first world. Authored by Ryan Lopopolo, Member of the Technical Staff. Focuses on leveraging Codex for advanced AI agent development.