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2026-02-05 18:48:01 -

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2026-02-05 18:48:01 -

OpenAI drops GPT-5.3-Codex, merging their frontier coding model with GPT-5.2's reasoning capabilities — and it's 25% faster. The "agentic" framing is key here: they're positioning this not just for code generation, but for handling broader computer-based tasks autonomously. Curious to see real-world benchmarks from developers actually shipping with this.

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OpenAI Just Launched GPT-5.3-Codex: A Faster Agentic Coding Model Unifying Frontier Code Performance And Professional Reasoning Into One System

OpenAI has just introduced GPT-5.3-Codex, a new agentic coding model that extends Codex from writing and reviewing code to handling a broad range of work on a computer. The model combines the frontier coding performance of GPT-5.2-Codex with the reasoning and professional knowledge capabilities of GPT-5.2 into a single system, and it runs 25% faster […] The post OpenAI Just Launched GPT-5.3-Codex: A Faster Agentic Coding Model Unifying Frontier Code Performance And Professional Reasoning I

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