GPT 5.3 Codex, OpenAI's new agentic coding model, helped create itself

GPT-5.3 Codex merges the advanced coding capabilities of GPT-5.2 Codex with the reasoning and professional knowledge of GPT-5 ...

OpenAI unveils GPT-5.3-Codex to tackle more advanced and complex coding

GPT-5.3-Codex is about more than just writing code ...
eWeek

GPT-5.3-Codex: OpenAI Unveils a 25% Faster AI Model That Goes Beyond Coding

OpenAI’s GPT-5.3-Codex expands Codex into a full agentic system, delivering faster performance, top benchmarks, and advanced cybersecurity capabilities.

Claude Opus 4.6 vs GPT-5.3-Codex: Which Agentic Coding Model Offers the Best Value

Anthropic's Claude Opus 4.6 and OpenAI's GPT-5.3-Codex go head-to-head in agentic coding, but are there any differences?
htxt

Get R12k worth of AI developer courses for less than R500

Anybody interested in using AI to assist in software development or developing AI tools may want to take note of an offer from Humble Bundle. The 2026 Claude Code and AI Development Bundle is now ...