by OpenAI
GPT-5.1 Instant (or GPT-5.1 chat) is a warmer and more conversational version of GPT-5-chat, with improved instruction following and adaptive reasoning for deciding when to think before responding.
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OpenAI is a leading artificial intelligence research company founded in 2015. They are known for developing some of the most advanced AI models in the world, including the GPT series for natural language processing and DALL-E for image generation.
Their mission is to ensure that artificial general intelligence (AGI) benefits all of humanity. OpenAI focuses on creating safe and beneficial AI systems while conducting cutting-edge research.
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