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.
Anthropic, one of OpenAI's chief rivals, also released a new coding model today, Claude Opus 4.6. Earlier this week, OpenAI ...
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's new GPT-5.3-Codex is 25% faster and goes way beyond coding now - what's new ...
Today, OpenAI announced GPT-5.3-Codex, its most capable agentic coding model to date. The company says the model achieved ...
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