ChatGPT 5.3 Codex Moves Ahead on Code, While Claude’s 4.6 AI Banks on Reliability

On a 2.0 terminal benchmark, OpenAI’s model scores about 10% higher, guiding users toward stronger results on long, complex ...

ChatGPT-5.3 Codex & Claude Opus 4.6 Launch Offering Unmatched Coding Speed or Long Recall Depth

Claude Opus 4.6 and ChatGPT 5.3 Codex launch with a 1-million-token window and 25% faster runs, letting you match tasks to ...
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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.

OpenAI claims its latest model helped code itself.

GPT‑5.3‑Codex, its new coding and development model, is apparently the first “that was instrumental in creating itself.” No, that probably doesn’t mean ChatGPT is ready to build its own Skynet, but it ...

OpenAI's new GPT-5.3-Codex is 25% faster and goes way beyond coding now - what's new

OpenAI has a published Preparedness Framework, which it uses for measuring and protecting against severe harm from frontier AI capabilities. In the blog post announcing GPT-5.3-Codex, the company says ...