At a glance Expert's Rating Pros ・Exclusive access to the Operator agent ・Full access to GPT-4o and all reasoning models ...

Since Sesame unleashed its voice assistant demo, users have reported awestruck reactions. "I've been into AI since I was a ...

Contextual AI launches its Grounded Language Model (GLM) that achieves 88% factual accuracy, outperforming major competitors while minimizing hallucinations for enterprise applications.

On OpenAI's SimpleQA benchmark , which measures accuracy on factual questions, the model outperformed GPT-4o and OpenAI's o1 and o3-mini reasoning models. However, it fell short when compared to ...

It also reduces the rate of AI “hallucinations” — instances where models generate false information — to 37.1%, down from GPT-4o’s 61.8% and the o1 reasoning model’s 44%. The rollout will begin with ...

“To measure this, we asked human testers to evaluate it against GPT-4o, and GPT-4.5 outperformed on basically every category,” he added. The company has also assured that the new model is even better ...

Based on comparisons with previous versions of ChatGPT, OpenAI found that GPT-4.5 outperformed GPT-4o, OpenAI o1, and OpenAI o3-mini. GPT-4.5's accuracy in answering complex questions is 62.5 percent, ...

According to the start-up, while GPT-4o would give factual advice to help you address your concerns, GPT-4.5 produces a more human-like, natural response. GPT-4.5 was trained on Microsoft’s ...

For now, GPT-4.5 is here as an upgrade to GPT-4o, improving response quality, reducing hallucinations, and making AI conversations feel smoother. Unlike previous versions, GPT-4.5 also encourages ...

OpenAI released GPT-4.5 with a massive price increase – API costs are $75 per million input tokens and $150 per million output tokens, representing a 1300-2900% increase from GPT-4o The model ...

At 37.1%, GPT-4.5's hallucination rate compares with the 61.8% shown by GPT-4o and 44% shown by its o1 reasoning model. GPT-4.5 supports file and image uploads and can also work on writing and ...