By OpenAI 's own testing, its newest reasoning models, o3 and o4 -mini, hallucinate significantly higher than o1.

OpenAI has launched its advanced AI models, o3 and o4-mini, enhancing reasoning and problem-solving capabilities. The o3 ...

Wei and team don't directly offer any hypothesis about why Deep Research fails almost half the time, but the implicit answer ...

Described as the company's “smartest models to date,” they can agentically use and combine every tool within ChatGPT, such as ...

Discover OpenAI’s O3 & O4 Mini, the groundbreaking AI models excelling in reasoning, tool usage, and cost efficiency. Learn ...

OpenAI launches groundbreaking o3 and o4-mini AI models that can manipulate and reason with images, representing a major ...

On Wednesday, OpenAI announced the release of two new models—o3 and o4-mini—that combine simulated reasoning capabilities ...

An organization OpenAI frequently partners with to probe the capabilities of its AI models and evaluate them for safety, Metr, suggests that it wasn’t given much time to test one of the company’s ...

OpenAI has finally released the full o3 reasoning model along with o4-mini. New models can use multiple tools inside ChatGPT ...

If this sounds confusing, well, that's because it is. OpenAI CEO Sam Altman acknowledged OpenAI's habit of terrible product ...

Cutting through the confusion is the 2025 AI Index from Stanford University’s Institute for Human-Centered Artificial ...

OpenAI has unveiled “PaperBench,” a benchmark designed to evaluate how effectively AI agents can replicate innovative machine learning research. This initiative is a cornerstone of OpenAI’s ...