OpenAI's Latest AI Models Are Built for Speed

The GPT-5.3 and 5.4 models represent a different approach, hinting at a major change in how major AI firms build their tech.

OpenAI Group PBC and Mistral AI SAS today introduced new artificial intelligence models optimized for cost-sensitive use cases. OpenAI is rolling out two algorithms called GPT-5.4 mini and GPT 5.4 nano to its cloud services.

OpenAI will soon shut down its Sora AI video generation app, the company said in a surprising announcement Tuesday. "We’re saying goodbye to Sora," the company wrote in a post on X. "We’ll share more soon, including timelines for the app and API and details on preserving your work."