OpenAI debuts GPT-5.3-Codex: 25% faster and setting new coding benchmark records February 5, 2026 by admin Tweet OpenAI has launched GPT-5.3-Codex, a high-performance agentic model that sets new records across major coding benchmarks. Read more… Neowin Related Posts:Anthropic announces Claude Opus 4.7 beating OpenAI…OpenAI's new GPT-5.5 arrives with advanced agentic…Apple releases Xcode 26.3 with support for coding…OpenAI announces GPT‑5.1-Codex-Max, a new coding…OpenAI introduces GPT‑5.3‑Codex‑Spark, an ultra-fast…