By contrast, OpenAI's flagship reasoning model, o1 pro, costs $15 per million input tokens and $60 per million output tokens—significantly less than GPT-4.5 despite offering specialized ...

During a livestreamed event on Monday, OpenAI debuted GPT-4o. It’s an updated version of its GPT-4 model, which is now more than a year old. The new large language model, trained on vast amounts ...

OpenAI has officially integrated its flagship GPT-4.1 model into ChatGPT, making it available to Plus, Pro, and Team subscribers starting today. The company announced the rollout on X (Twitter ...