OpenAI releases GPT-5.3-Codex, a coding model that helped build itself

1 month ago 6
chatgpt app logo on phone screen with same logo as background

OpenAI released a new coding model today, GPT-5.3-Codex. The company said the new model has improved "reasoning and professional knowledge capabilities" and will operate 25 percent faster than its predecessor.

Anthropic, one of OpenAI's chief rivals, also released a new coding model today, Claude Opus 4.6. Earlier this week, OpenAI also

Source: https://mashable.com/article/openai-releases

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