🤖 OpenAI releases GPT-5.1 with smarter reasoning and adaptive tone

OpenAI has quietly launched GPT-5.1, an upgraded model that can now decide when to think deeply and when to respond instantly, improving complex reasoning while keeping simple replies fast.

• Smarter interaction: The model automatically adjusts between quick and deliberative modes depending on the query.
• Better instruction-following: Noticeably improved understanding of nuanced and multi-step prompts.
• Customizable personality: Users can shift tone and style from professional and concise to casual or eccentric.
• Auto-mode: Dynamically switches between different GPT modes for optimal performance.

The rollout begins this week, bringing OpenAI’s most balanced model yet to all users.