GPT-5.5 Instant is now the default ChatGPT model. It makes fewer things up, answers more concisely, and finally remembers ...

OpenAI’s GPT-5.5 Instant is now ChatGPT’s default model, promising fewer hallucinations, shorter answers, better memory ...

GPT-5.5 Instant is OpenAIs latest lightweight AI model built for quick and efficient interactions inside ChatGPT.

ChatGPT's default model has been updated to GPT-5.5 Instant, a model that brings accuracy improvements with fewer ...

ChatGPT launched publicly on 30 November 2022 as a “research preview.” It was powered by GPT-3.5, marking the first time a powerful generative-pretrained transformer model was widely available in a ...

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 ...

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 rolls out GPT-5.5 Instant for ChatGPT users, offering improved accuracy, fewer errors, faster responses, and better ...

OpenAI on Wednesday released GPT-5.3-Codex, which the company calls its most capable coding agent to date, in an announcement timed to land at the exact same moment Anthropic unveiled its own flagship ...

OpenAI has quietly swapped out the engine powering ChatGPT for most users. Starting May 5, GPT-5.5 Instant replaces GPT-5.3 ...