OpenAI unveils GPT-4.5 ‘Orion’, its largest AI model yet

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OpenAI announced on Thursday it is launching GPT-4.5, the much-anticipated AI model code-named Orion.GPT-4.5 is OpenAI’s largest model to date, trained using more computing power and data than any of the company’s previous releases.

Despite its size, OpenAI notes in a whitepaper that it does not consider GPT-4.5 to be a frontier model.

On OpenAI’s SimpleQA benchmark, which tests AI models on straightforward, factual questions, GPT-4.5 outperforms GPT-4o and OpenAI’s reasoning models, o1 and o3-mini, in terms of accuracy.

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Article Details

Author / Journalist: Maxwell Zeff

Category: Technology

Markets: United States

Topics: AI OpenAI ChatGPT TC

Source Website Secure: Yes (HTTPS)

News Sentiment: Negative

Fact Checked: Legitimate

Article Type: News Report

Published On: 2025-02-27 @ 20:00:00 (20 hours ago)

News Timezone: GMT -5:00

News Source URL: techcrunch.com

Language: English

Article Length: 1174 words

Reading Time: 7 minutes read

Sentences: 40 lines

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Copyright Owner: © TechCrunch

News ID: 26487006

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