OpenAI Releases GPT-5.1 With Warmer Tone and Adaptive Reasoning
OpenAI has launched GPT-5.1, a major upgrade to its flagship AI model series that brings warmer, more conversational interactions and smarter reasoning capabilities to ChatGPT. The release, announced November 13, 2025, introduces two distinct variants—GPT-5.1 Instant and GPT-5.1 Thinking—designed to balance speed with complex problem-solving