Dan tested Codex 5.3 on Proof, a macOS markdown editor that he's been vibe coding that tracks the origin of every piece of text—whether it was written by a human or generated by AI—and lets users ...

The new model is build to accelerate the capabilities of Codex, the agentic coding tool OpenAI launched earlier this week.

Today, OpenAI announced GPT-5.3-Codex, a new version of its frontier coding model that will be available via the command line ...

OpenAI and Anthropic, the startups behind ChatGPT and Claude, are gearing up for a major showdown. Both need to prove they ...

The new coding model released Thursday afternoon, entitled GPT-5.3-Codex, builds on OpenAI’s GPT-5.2-Codex model and combines insights from the AI company’s GPT-5.2 model, which excels on non-coding ...

OpenAI launches GPT-5.3-Codex with faster coding, stronger reasoning, and higher benchmark accuracy—plus API access soon.

With a new Canva update, your ChatGPT designs can now match your brand’s look, pulling in the right colours, fonts and logos without you having to tweak or redesign anything manually.