OpenAI released GPT-6.1 Terra on October 26, 2026

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From the postAddendum to GPT-6 Astra System Card: GPT-6.1 TerraAlso in Introducing GPT-6.1 Terra

Addendum to GPT-6 Astra System Card: GPT-6.1 Terra

OpenAI's system card addendum for GPT-6.1 Terra, rating it Critical in cybersecurity and High in biological and chemical capability and reporting its safety evaluations.

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Introducing GPT-6.1 Terra

OpenAI introduces GPT-6.1 Terra, a fast, efficient model for visual reasoning, computer use and writing, priced at half of GPT-5.6 Terra and GPT-6.1 Sol.