OpenAI releases GPT-5.1: Smarter, more conversational ChatGPT
OpenAI today announced the rollout of its latest AI models, the GPT‑5.1 Instant and GPT‑5.1 Thinking, marking a significant upgrade in both performance and interaction quality for its flagship chatbot platform ChatGPT, Kazinform News Agency correspondent reports, citing OpenAI.
According to OpenAI, the new models will begin reaching users “starting today,” first for paid tiers, eventually expanding to all users.
What’s new
The update introduces two distinct model variants:
· GPT-5.1 Instant is described as the most-used model in ChatGPT’s stable, now “warmer, more intelligent, and better at following your instructions.”
· GPT-5.1 Thinking offers more advanced reasoning capabilities: it’s faster on simple tasks, more persistent on complex ones, and clearer in its responses.
From a user-experience perspective, the improvements mean less “machine-tone” in responses and more flexibility in how ChatGPT “sounds”.
For developers, improved reasoning models could enhance applications that require deeper analytical or conversational capabilities.
If you’re a paid user (Pro, Plus, Go, Business), you’re among the first to gain access. Free or logged-out users will receive the upgrade subsequently.
Legacy GPT-5 models will remain available as alternatives for about three months to give users time to compare and adapt.
Customisation & Tone controls
OpenAI introduced updated “personality” presets — Default, Friendly, Efficient, Professional, Candid, Quirky — and is starting to roll out finer-grained controls over warmth, conciseness, use of emojis, and other traits.
Unlike before, changes in personalization settings will apply immediately across all ongoing chats, not just new ones. This means users can adjust how ChatGPT responds mid-conversation and experience a consistent tone.
Earlier, Kazinform News Agency reported on a new study that exploring how language models like GPT-5 reflect political bias and emotional cues.