On Thursday, OpenAI announced the launch of GPT-4o mini, a new, smaller version of its latest GPT-4o AI language model that will replace GPT-3.5 Turbo in ChatGPT, reports CNBC and Bloomberg. It will ...

GPT-5.3 Instant is now live inside ChatGPT and available immediately for developers via the API under the name “gpt-5.3-chat-latest.” This update marks the beginning of the end for the previous ...

OpenAI has formally brought back its highly capable GPT‑3.5 Turbo API to developers, a significant step towards restoring the foundation of the original ChatGPT that delighted the world in 2022. The ...

A paper tested whether Google results and OpenAI's API can stand in for ChatGPT's citations. They matched cited sites more often than the exact pages.

On Tuesday, OpenAI released a new foundation model called GPT-5.5 Instant, which will replace GPT-5.3 Instant as the default ChatGPT model. The company said the model reduces hallucination in ...

OpenAI will soon retire GPT-4, an AI model it launched over two years ago, from ChatGPT, according to a changelog posted on Thursday. Effective April 30, GPT-4 will be “fully replaced” by GPT-4o, the ...

OpenAI introduced GPT-6.1 Sol, an upgrade to its GPT-6 Sol model, at its DevDay 2026 event on September 29, 2026, releasing the model in the API at $2 per million input tokens and $10 per million ...