OpenAI launches GPT-5.5 for ChatGPT and Codex
OpenAI has launched GPT-5.5, the latest version of its foundational large language model, making it available across ChatGPT and Codex.
The release marks another update to the company’s core model family as it continues to refine the systems behind both its consumer chatbot and its coding tools. OpenAI did not provide additional details in the research supplied about the model’s capabilities, pricing, or rollout timing beyond the launch itself.
GPT-5.5 arrives as OpenAI keeps pushing the same underlying technology into more of its products, with ChatGPT serving as the company’s flagship general-purpose assistant and Codex aimed at software development tasks. The update suggests a continued emphasis on improving the model layer that powers both experiences.
The launch also underscores how central the foundational model remains to OpenAI’s broader platform strategy. Rather than introducing a separate product, the company is extending the latest iteration of its large language model into existing tools used by millions of people for conversation, writing, and coding.
Across ChatGPT and Codex
By shipping GPT-5.5 into both ChatGPT and Codex, OpenAI is aligning its most visible consumer and developer offerings around the same model generation. That approach can simplify the company’s product stack while giving users access to the newest underlying system wherever they interact with OpenAI’s software.
For now, the launch details are limited to the model’s arrival itself. OpenAI has not included further specifics in the provided research about how GPT-5.5 differs from earlier versions or what improvements users should expect.
Still, the rollout signals that the company is continuing to iterate on its core large language model as competition intensifies across both chatbot and coding-assistant markets.
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