OpenAI has just pushed a major update to its flagship model with the launch of GPT‑5.1, featuring two distinct modes designed to give users more choice and better experience. OpenAI+2IBL News+2
The first mode, GPT‑5.1 Instant, is crafted for everyday use: described as “warmer, more intelligent, and better at following your instructions,” it’s ideal for casual chats, writing help and dynamic workflows. The second mode, GPT‑5.1 Thinking, is built for depth: optimized to be “easier to understand and faster on simple tasks, more persistent on complex ones,” making it perfect for in‑depth research, analysis or multi‑step reasoning. OpenAI+1
Beyond raw performance, OpenAI is also enhancing personalization: users will now see more options for conversational tone (like Friendly, Candid, Quirky) and can fine‑tune ChatGPT’s style to their liking. OpenAI
The rollout begins this week for paid users, with legacy GPT‑5 models remaining available for a transition period. This update marks a shift: AI is not just getting smarter—it’s becoming more human. New OpenAI confirmation:
OpenAI’s official release notes also confirm a new Group Chats feature in ChatGPT, currently rolling out in New Zealand, Japan, South Korea and Taiwan. This feature lets multiple people collaborate in a shared AI conversation — a major shift from solo chats to team-based workflows.
Stay tuned to aitoolsguide.in for how to try both modes, compare results and decide which one suits your workflow best.
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