# OpenAI debuts GPT-4.5: Bigger, smarter — and more expensive

> In This Story OpenAI says it’s releasing its “largest” and “strongest” chat model to date. GPT 4. 5 will be released as a research preview first to ChatGPT Pro users and developers on all paid tiers.

- **Source:** [Qz](https://qz.com/openai-gpt-4-5-larger-smarter-model-1851766879?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=67c6c15c6d113f8f204ad21d)
- **Published:** 2025-03-04
- **Category:** AI & Bots
- **Tags:** #chatgpt #openai #bigger #debuts #expensive #smarter #chat #date
- **Canonical:** http://localhost:4321/a/67c6c15c6d113f8f204ad21d

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_GearOpen's distilled summary. The full original article is published at Qz (source link above); GearOpen does not republish the source's full text._