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 →

OpenAI's recent launch of GPT-5 has triggered intense user dissatisfaction. Within days of release, the company automatically removed access to all prior ChatGPT models without warning, prompting a flood of complaints on social media and Reddit. Users cited broken workflows, loss of preferred model personalities, and performance issues. The uproar led CEO Sam Altman to issue a public apology and reverse key decisions. The episode highlights the challenges of abrupt AI model deprecations for consumer-facing platforms. Read more →