"GPT-5.1 Instant will be the new standard model within ChatGPT. According to OpenAI, it is less formal than its predecessor and better at following instructions. The most important technical innovation is the use of adaptive reasoning time. The model itself determines when it needs to think longer, for example in the case of more complex prompts, and when a quick response is sufficient. OpenAI claims that in practice this results in more efficient use of tokens and more consistent answers."
"GPT-5.1 Thinking focuses on more demanding analytical tasks. The variant should be better at handling complex prompts and distributes the internal calculation time more accurately between simple and challenging questions. OpenAI says that the model uses less jargon and introduces vague terms less often, making technical explanations more accessible. In doing so, the company aims to address criticism that GPT-5 sounded more complex than necessary in some scenarios, while the substantive progress remained limited."
OpenAI released GPT-5.1, the first major update to the GPT-5 generation, three months after GPT-5's launch. The release includes two variants: GPT-5.1 Instant as the new ChatGPT standard and GPT-5.1 Thinking for demanding analytical tasks. Instant is less formal, better at following instructions, and introduces adaptive reasoning time so the model chooses longer thinking for complex prompts. Thinking allocates internal calculation time more accurately, reduces jargon, and makes technical explanations more accessible. The update aims to improve response quality and conversational naturalness while addressing criticism about GPT-5's perceived complexity and limited substantive progress. Microsoft promoted alternative models like Anthropic in Copilot amid user pushback.
Read at Techzine Global
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