OpenAI introduced its newest model, GPT‑5.1, as the default engine for ChatGPT. The update offers two variants—Instant for fast responses and Thinking for more deliberative tasks—while adding real‑time personality and tone controls that let users adjust the chatbot’s style on the fly. The rollout follows criticism of the previous GPT‑5 release, with OpenAI keeping older models available for comparison and planning a phased deployment over several months. Read more →

OpenAI has launched GPT‑5.1, a two‑model system that pairs an Instant model for everyday requests with a Thinking model for more complex tasks. The update adds six new tone‑presets—Default, Friendly, Efficient, Professional, Candid and Quirky—plus the existing Cynical and Nerdy options, letting users tailor ChatGPT’s personality. OpenAI says the new models are “warmer, more intelligent, and better at following your instructions.” The rollout will start with paid users before extending to free accounts, while legacy models remain available for a limited period. Read more →