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GPT-5: Key characteristics, pricing and system card
I’ve had preview access to the new GPT-5 model family for the past two weeks, and have been using GPT-5 as my daily-driver. It’s my new favorite model. It’s still …
We’ve made significant advances in reducing hallucinations, improving instruction following, and minimizing sycophancy, and have leveled up GPT-5’s performance in three of ChatGPT’s most common uses: writing, coding, and health. Large language models such as those powering ChatGPT have traditionally been trained to either be as helpful as possible or outright refuse a user request, depending on whether the prompt is allowed by safety policy. [...] Binary refusal boundaries are especially ill-suited for dual-use cases (such as biology or cybersecurity), where a user request can be completed safely at a high level, but may lead to malicious uplift if sufficiently detailed or actionable.
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