November 5, 2025

GPT-5.1-Codex-Max: 5 Breakthroughs Behind OpenAI’s 80% SWE-Bench AI Coding Model

80% accuracy on SWE-Bench. 24 hours of continuous coding. Zero degradation. GPT-5.1-Codex-Max is OpenAI’s most ambitious agentic coding model to date, launched on November 20, 2025, […]